{"title":"Bundles \u0026 Combos","description":"\u003cp\u003eSave when you buy our HVACR training books together. Free shipping in the USA.\u003c\/p\u003e","products":[{"product_id":"refrigerant-charging-mini-split-combo","title":"NEW Refrigerant Charging \u0026 Mini Split Combo","description":"\u003cstyle\u003e\n.cmp{font-family:'Open Sans',Arial,sans-serif;color:#2b2b2b;max-width:860px}\n.cmp,.cmp *{letter-spacing:normal !important}\n.cmp .lede{font-size:16px;line-height:1.7;margin:0 0 22px}\n.cmp .trust{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 30px}\n.cmp .trust div{border:1px solid #e2e8f0;border-radius:8px;padding:16px 18px;background:#fbfcfe}\n.cmp .trust h4{margin:0 0 7px;font-size:15px;font-weight:700;color:#272263}\n.cmp .trust p{margin:0;font-size:14px;line-height:1.6;color:#4a5568}\n.cmp .tabs{border-top:1px solid #e2e8f0;margin:0 0 34px}\n.cmp .tabs input{position:absolute;opacity:0;pointer-events:none}\n.cmp .tabrow{display:flex;gap:26px;border-bottom:1px solid #e2e8f0;flex-wrap:wrap}\n.cmp .tabrow label{padding:14px 2px;font-size:15px;font-weight:600;color:#6b7280;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}\n.cmp .tabrow label:hover{color:#272263}\n.cmp .panel{display:none;padding:20px 0 4px;font-size:15px;line-height:1.75}\n.cmp .panel ul{margin:10px 0 0;padding-left:20px}\n.cmp .panel li{margin:0 0 7px}\n.cmp #cmpt1:checked~.tabrow label[for=cmpt1],.cmp #cmpt2:checked~.tabrow label[for=cmpt2],.cmp #cmpt3:checked~.tabrow label[for=cmpt3]{color:#272263;border-bottom-color:#272263}\n.cmp #cmpt1:checked~#cmpp1,.cmp #cmpt2:checked~#cmpp2,.cmp #cmpt3:checked~#cmpp3{display:block}\n.cmp .feature{padding:30px 0;border-top:1px solid #eef1f6}\n.cmp .feature h3{font-size:21px;font-weight:700;color:#272263;margin:0 0 10px;line-height:1.35}\n.cmp .feature p{font-size:15px;line-height:1.75;margin:0 0 16px;color:#3f4a5a}\n.cmp .cta{display:inline-block;background:#272263;color:#fff !important;text-decoration:none;font-weight:700;font-size:13px;letter-spacing:.06em !important;text-transform:uppercase;padding:12px 26px;border-radius:5px}\n.cmp .cta:hover{background:#1a1460}\n.cmp .quotes{background:#f7f9fc;border-radius:10px;padding:28px 24px;margin:30px 0}\n.cmp .quotes h3{text-align:center;font-size:20px;font-weight:700;color:#272263;margin:0 0 6px}\n.cmp .quotes .sub{text-align:center;font-size:14px;color:#6b7280;margin:0 0 20px}\n.cmp .qcard{background:#fff;border:1px solid #e2e8f0;border-radius:8px;padding:18px 20px;max-width:560px;margin:0 auto}\n.cmp .qcard .stars{color:#f0a500;font-size:14px;margin:0 0 9px}\n.cmp .qcard blockquote{margin:0 0 12px;font-size:14px;line-height:1.75;color:#3f4a5a;font-style:italic}\n.cmp .qcard cite{font-size:13px;font-weight:700;color:#272263;font-style:normal}\n.cmp details{border:1px solid #e2e8f0;border-radius:6px;margin:0 0 9px;background:#fff}\n.cmp details summary{list-style:none;cursor:pointer;padding:14px 16px;font-size:15px;font-weight:600;color:#272263;display:flex;justify-content:space-between;align-items:center}\n.cmp details summary::-webkit-details-marker{display:none}\n.cmp details summary:after{content:'+';font-size:19px;color:#6b7280}\n.cmp details[open] summary:after{content:'\\2212'}\n.cmp details p{margin:0;padding:0 16px 15px;font-size:14px;line-height:1.75;color:#4a5568}\n.cmp .faqlabel{font-size:12px;font-weight:700;letter-spacing:.14em !important;text-transform:uppercase;color:#8b95a5;margin:30px 0 12px}\n.cmp .support{text-align:center;margin:24px 0 0;font-size:14px;color:#6b7280}\n@media(max-width:700px){.cmp .trust{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\n\u003cdiv class=\"cmp\"\u003e\n\n\u003cp class=\"lede\"\u003e\u003cstrong\u003eSave $22.\u003c\/strong\u003e The complete refrigerant charging and inverter mini split training set from AC Service Tech, in one order. Both subjects, both sides of the trade, by Craig Migliaccio. Free shipping in the USA.\u003c\/p\u003e\n\n\u003cdiv class=\"trust\"\u003e\n  \u003cdiv\u003e\n    \u003ch4\u003e30 days to change your mind\u003c\/h4\u003e\n    \u003cp\u003eIf the set is not what you needed, tell us inside 30 days and we refund it. The full terms sit on the refund policy page.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv\u003e\n    \u003ch4\u003eStill in the field, not just in print\u003c\/h4\u003e\n    \u003cp\u003eCraig Migliaccio holds an HVACR Master License in New Jersey, has over 16 years in the trade and owns an HVAC contracting business.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"tabs\"\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt1\" checked\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt2\"\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt3\"\u003e\n  \u003cdiv class=\"tabrow\"\u003e\n    \u003clabel for=\"cmpt1\"\u003eWhy the full set\u003c\/label\u003e\n    \u003clabel for=\"cmpt2\"\u003eBoth subjects covered\u003c\/label\u003e\n    \u003clabel for=\"cmpt3\"\u003eShipping \u0026amp; returns\u003c\/label\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp1\"\u003e\n    \u003cp\u003eMost techs buy the air conditioning title first. Then a ductless call goes sideways a few months later and they come back for the mini split side. This set skips the second trip.\u003c\/p\u003e\n    \u003cp\u003eIt is the complete refrigerant charging and inverter mini split training set, ordered once, at $22 less than buying the pieces apart. Useful if you are building a reference shelf from nothing, or kitting out an apprentice who needs both subjects rather than whichever one came up first.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp2\"\u003e\n    \u003cp\u003eAcross the set you cover two separate bodies of work.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eRefrigerant charging and service, ducted systems:\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003eTotal Superheat and Total Subcooling, and which metering device calls for which\u003c\/li\u003e\n      \u003cli\u003eThe total weight charging method, including refrigerant per foot of line set\u003c\/li\u003e\n      \u003cli\u003eRecovery, evacuation and the vacuum procedure\u003c\/li\u003e\n      \u003cli\u003eLeak detection methods and pressure testing limits\u003c\/li\u003e\n      \u003cli\u003eA2L refrigerants, R-32 and R-454B, with the tools and handling that come with them\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp\u003e\u003cstrong\u003eInverter mini splits, ductless:\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003eHow a variable speed system actually operates\u003c\/li\u003e\n      \u003cli\u003eCommissioning, flaring and line set work\u003c\/li\u003e\n      \u003cli\u003eDiagnostics and troubleshooting sequences for ductless faults\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp\u003eIf you want the item list for this particular combo confirmed before you order, email \u003ca href=\"mailto:info@acservicetech.com\"\u003einfo@acservicetech.com\u003c\/a\u003e and we will send it over.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp3\"\u003e\n    \u003cp\u003eFree shipping within the USA. Orders normally leave within one to two business days. Returns are accepted within 30 days in resalable condition; see the refund policy page for the full terms.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eOne order instead of four separate ones.\u003c\/h3\u003e\n  \u003cp\u003eBuying a title at a time means a gap every time the work moves ahead of what you own. This set closes both subjects at once, and the $22 comes off for taking them together rather than one by one.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/collections\/all\"\u003eSee every title\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eDucted and ductless do not diagnose the same way.\u003c\/h3\u003e\n  \u003cp\u003eCharge an inverter unit by the fixed superheat and subcooling targets you would use on a single speed condenser and the numbers will send you the wrong way. A variable speed compressor moves the target while you are reading it. That is a different procedure, not a harder version of the same one, which is why ductless gets its own title here.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/mini-split-book\"\u003eSee what is in the mini split book\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eThe A\/C side is the 2nd Edition.\u003c\/h3\u003e\n  \u003cp\u003eThat edition adds new tools, updated procedures and the A2L refrigerants, R-32 and R-454B. If you are already seeing A2L equipment on service calls, this is the edition that covers it rather than the one that predates it.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/ac-book\"\u003eSee what is in the A\/C book\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"quotes\"\u003e\n  \u003ch3\u003eWhat techs say\u003c\/h3\u003e\n  \u003cp class=\"sub\"\u003eFrom AC Service Tech readers and viewers.\u003c\/p\u003e\n  \u003cdiv class=\"qcard\"\u003e\n    \u003cp class=\"stars\"\u003e★★★★★\u003c\/p\u003e\n    \u003cblockquote\u003e\"I have spent many years attending the finest courses and colleges to perfect my trade, however you are never too old to pick up new information and tips from other tradesmen. After scouring through literally thousands of YouTube videos, I came across AC Service Tech. I was astounded by the professionalism of this channel and the gentleman that runs it, and if you are a perfectionist, you can spot another perfectionist! I can't help thinking 'If I had my time again, I would love to have been taught by this guy'. Thank you for being an awesome resource.\"\u003c\/blockquote\u003e\n    \u003ccite\u003e— Stuart B., England, UK\u003c\/cite\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp class=\"faqlabel\"\u003eQuestions before you order\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eWho wrote these?\u003c\/summary\u003e\u003cp\u003eCraig Migliaccio, owner of AC Service Tech LLC. He holds an HVACR Master License in New Jersey, is licensed by the state to teach HVACR, Sheet Metal and Building Maintenance, has over 16 years in the field and owns an HVAC contracting business.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the air conditioning title the updated A2L edition?\u003c\/summary\u003e\u003cp\u003eYes. It is the 2nd Edition of \u003cem\u003eRefrigerant Charging and Service Procedures for Air Conditioning\u003c\/em\u003e, which adds new tools, updated procedures and the A2L refrigerants R-32 and R-454B.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow is this different from the two paperback combo?\u003c\/summary\u003e\u003cp\u003eThe paperback combo is the two books on their own. This is the complete refrigerant charging and inverter mini split training set, so it carries more than the two paperbacks, costs more and saves you more off the separate prices.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan you confirm exactly what arrives?\u003c\/summary\u003e\u003cp\u003eEmail \u003ca href=\"mailto:info@acservicetech.com\"\u003einfo@acservicetech.com\u003c\/a\u003e before you order and we will confirm the item list for this combo in writing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eI am still in school. Is this too advanced?\u003c\/summary\u003e\u003cp\u003eCraig taught HVACR to high school and adult students for years before any of this was written down, so procedures start from the beginning. The troubleshooting sequences stay useful later, once you have calls behind you.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhen does it ship?\u003c\/summary\u003e\u003cp\u003eOrders normally leave within one to two business days, with free shipping inside the USA.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat if it is not what I needed?\u003c\/summary\u003e\u003cp\u003eTell us within 30 days and we will refund it. The full terms are on the refund policy page.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cp class=\"support\"\u003eStill have a question? Email \u003ca href=\"mailto:info@acservicetech.com\"\u003einfo@acservicetech.com\u003c\/a\u003e and a person will answer.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"AC Service Tech","offers":[{"title":"Default Title","offer_id":67809675641045,"sku":null,"price":285.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/5401\/7237\/files\/5a0dbb_f8d0ef7c92d249829d16db95e148d30c_mv2.png?v=1792318962"},{"product_id":"refrigerant-paperback-workbook-card-combo","title":"NEW 2nd Edition Refrigerant Paperback\/Workbook\/Card Combo","description":"\u003cstyle\u003e\n.cmp{font-family:'Open Sans',Arial,sans-serif;color:#2b2b2b;max-width:860px}\n.cmp,.cmp *{letter-spacing:normal !important}\n.cmp .lede{font-size:16px;line-height:1.7;margin:0 0 22px}\n.cmp .trust{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 30px}\n.cmp .trust div{border:1px solid #e2e8f0;border-radius:8px;padding:16px 18px;background:#fbfcfe}\n.cmp .trust h4{margin:0 0 7px;font-size:15px;font-weight:700;color:#272263}\n.cmp .trust p{margin:0;font-size:14px;line-height:1.6;color:#4a5568}\n.cmp .tabs{border-top:1px solid #e2e8f0;margin:0 0 34px}\n.cmp .tabs input{position:absolute;opacity:0;pointer-events:none}\n.cmp .tabrow{display:flex;gap:26px;border-bottom:1px solid #e2e8f0;flex-wrap:wrap}\n.cmp .tabrow label{padding:14px 2px;font-size:15px;font-weight:600;color:#6b7280;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}\n.cmp .tabrow label:hover{color:#272263}\n.cmp .panel{display:none;padding:20px 0 4px;font-size:15px;line-height:1.75}\n.cmp .panel ul{margin:10px 0 0;padding-left:20px}\n.cmp .panel li{margin:0 0 7px}\n.cmp #cmpt1:checked~.tabrow label[for=cmpt1],.cmp #cmpt2:checked~.tabrow label[for=cmpt2],.cmp #cmpt3:checked~.tabrow label[for=cmpt3]{color:#272263;border-bottom-color:#272263}\n.cmp #cmpt1:checked~#cmpp1,.cmp #cmpt2:checked~#cmpp2,.cmp #cmpt3:checked~#cmpp3{display:block}\n.cmp .feature{padding:30px 0;border-top:1px solid #eef1f6}\n.cmp .feature h3{font-size:21px;font-weight:700;color:#272263;margin:0 0 10px;line-height:1.35}\n.cmp .feature p{font-size:15px;line-height:1.75;margin:0 0 16px;color:#3f4a5a}\n.cmp .cta{display:inline-block;background:#272263;color:#fff !important;text-decoration:none;font-weight:700;font-size:13px;letter-spacing:.06em !important;text-transform:uppercase;padding:12px 26px;border-radius:5px}\n.cmp .cta:hover{background:#1a1460}\n.cmp .quotes{background:#f7f9fc;border-radius:10px;padding:28px 24px;margin:30px 0}\n.cmp .quotes h3{text-align:center;font-size:20px;font-weight:700;color:#272263;margin:0 0 6px}\n.cmp .quotes .sub{text-align:center;font-size:14px;color:#6b7280;margin:0 0 20px}\n.cmp .qcard{background:#fff;border:1px solid #e2e8f0;border-radius:8px;padding:18px 20px;max-width:560px;margin:0 auto}\n.cmp .qcard .stars{color:#f0a500;font-size:14px;margin:0 0 9px}\n.cmp .qcard blockquote{margin:0 0 12px;font-size:14px;line-height:1.75;color:#3f4a5a;font-style:italic}\n.cmp .qcard cite{font-size:13px;font-weight:700;color:#272263;font-style:normal}\n.cmp details{border:1px solid #e2e8f0;border-radius:6px;margin:0 0 9px;background:#fff}\n.cmp details summary{list-style:none;cursor:pointer;padding:14px 16px;font-size:15px;font-weight:600;color:#272263;display:flex;justify-content:space-between;align-items:center}\n.cmp details summary::-webkit-details-marker{display:none}\n.cmp details summary:after{content:'+';font-size:19px;color:#6b7280}\n.cmp details[open] summary:after{content:'\\2212'}\n.cmp details p{margin:0;padding:0 16px 15px;font-size:14px;line-height:1.75;color:#4a5568}\n.cmp .faqlabel{font-size:12px;font-weight:700;letter-spacing:.14em !important;text-transform:uppercase;color:#8b95a5;margin:30px 0 12px}\n.cmp .support{text-align:center;margin:24px 0 0;font-size:14px;color:#6b7280}\n@media(max-width:700px){.cmp .trust{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\n\u003cdiv class=\"cmp\"\u003e\n\n\u003cp class=\"lede\"\u003e\u003cstrong\u003eSave $12.\u003c\/strong\u003e Three pieces for one subject: the 2nd Edition of \u003cem\u003eRefrigerant Charging and Service Procedures for Air Conditioning\u003c\/em\u003e, its companion Workbook, and the HVAC Quick Reference Cards. By Craig Migliaccio. Free shipping in the USA.\u003c\/p\u003e\n\n\u003cdiv class=\"trust\"\u003e\n  \u003cdiv\u003e\n    \u003ch4\u003eRefund inside 30 days\u003c\/h4\u003e\n    \u003cp\u003eIf the set does not do what you wanted, tell us within 30 days and we refund it. The terms are on the refund policy page.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv\u003e\n    \u003ch4\u003eA2L is already in here\u003c\/h4\u003e\n    \u003cp\u003eThis is the 2nd Edition, which adds new tools, updated procedures and the A2L refrigerants R-32 and R-454B. The cards carry A2L P\/T charts.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"tabs\"\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt1\" checked\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt2\"\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt3\"\u003e\n  \u003cdiv class=\"tabrow\"\u003e\n    \u003clabel for=\"cmpt1\"\u003eThe three pieces\u003c\/label\u003e\n    \u003clabel for=\"cmpt2\"\u003eWhat you work through\u003c\/label\u003e\n    \u003clabel for=\"cmpt3\"\u003eShipping \u0026amp; returns\u003c\/label\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp1\"\u003e\n    \u003cp\u003eEach piece does a different job, and none of them replaces the other two.\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eThe paperback.\u003c\/strong\u003e The procedure, written in the order the work happens: what to measure, where, what the reading means, what to do next.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eThe Workbook.\u003c\/strong\u003e Over 1,600 questions across six question types, so you find out what did not stick while it still costs you nothing.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eThe Quick Reference Cards.\u003c\/strong\u003e A2L pressure\/temperature charts and refrigerant weight charts, in a form you can carry rather than look up.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp2\"\u003e\n    \u003cp\u003eThe subject is charging and service on air conditioning systems, worked end to end:\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003eTotal Superheat and Total Subcooling, and which metering device calls for which\u003c\/li\u003e\n      \u003cli\u003eThe total weight charging method, including refrigerant per foot of line set\u003c\/li\u003e\n      \u003cli\u003eRecovery, evacuation and the vacuum procedure\u003c\/li\u003e\n      \u003cli\u003eLeak detection methods and pressure testing limits\u003c\/li\u003e\n      \u003cli\u003eA2L refrigerants, R-32 and R-454B, with the tools and handling they require\u003c\/li\u003e\n      \u003cli\u003eTroubleshooting sequences and the readings that point to each fault\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp\u003eRead a chapter, work the matching questions, then keep the card for the readings you will want at the unit.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp3\"\u003e\n    \u003cp\u003eFree shipping within the USA. Orders normally leave within one to two business days. Returns are accepted within 30 days in resalable condition; the full terms are on the refund policy page.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eReading a procedure is not the same as knowing it.\u003c\/h3\u003e\n  \u003cp\u003eYou find that out at the condenser, usually with a customer standing behind you. The Workbook puts it earlier: over 1,600 questions in six different formats, so a topic you only half absorbed shows up as a wrong answer at the kitchen table instead of a wasted hour on a call.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/ac-book\"\u003eSee what is in the A\/C book\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eThe card is the part that goes up the ladder.\u003c\/h3\u003e\n  \u003cp\u003eNobody carries a paperback onto a roof. The Quick Reference Cards hold the A2L pressure\/temperature charts and the refrigerant weight charts, which are the two things you actually need in hand while the gauges are on. The book stays where you study; the card goes where you work.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/pt-chart\"\u003eCheck the P\/T chart\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eA2L is not a next-year problem.\u003c\/h3\u003e\n  \u003cp\u003eR-32 and R-454B are on equipment now, and the handling, the tools and the pressures are not what you learned on R-410A. The 2nd Edition covers them as part of the procedure rather than as an appendix bolted on at the end.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/resources\"\u003eBrowse the free resources\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"quotes\"\u003e\n  \u003ch3\u003eFrom a reader\u003c\/h3\u003e\n  \u003cp class=\"sub\"\u003eSent in to AC Service Tech.\u003c\/p\u003e\n  \u003cdiv class=\"qcard\"\u003e\n    \u003cp class=\"stars\"\u003e★★★★★\u003c\/p\u003e\n    \u003cblockquote\u003e\"I have spent many years attending the finest courses and colleges to perfect my trade, however you are never too old to pick up new information and tips from other tradesmen. After scouring through literally thousands of YouTube videos, I came across AC Service Tech. I was astounded by the professionalism of this channel and the gentleman that runs it, and if you are a perfectionist, you can spot another perfectionist! I can't help thinking 'If I had my time again, I would love to have been taught by this guy'. Thank you for being an awesome resource.\"\u003c\/blockquote\u003e\n    \u003ccite\u003e— Stuart B., England, UK\u003c\/cite\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp class=\"faqlabel\"\u003eQuestions before you order\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eWho wrote the book and workbook?\u003c\/summary\u003e\u003cp\u003eCraig Migliaccio, owner of AC Service Tech LLC. He holds an HVACR Master License in New Jersey, is licensed by the state to teach HVACR, Sheet Metal and Building Maintenance, has over 16 years in the field and owns an HVAC contracting business.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow many questions are in the workbook?\u003c\/summary\u003e\u003cp\u003eOver 1,600, across six different question types.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is on the quick reference cards?\u003c\/summary\u003e\u003cp\u003eA2L pressure\/temperature charts and refrigerant weight charts.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the mini split book part of this?\u003c\/summary\u003e\u003cp\u003eNo. \u003cem\u003eInverter Mini Split Operation and Service Procedures\u003c\/em\u003e is a separate title. There are combos that pair the two subjects if you want both.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this the current edition?\u003c\/summary\u003e\u003cp\u003eYes, the 2nd Edition, with new tools, updated procedures and the A2L refrigerants R-32 and R-454B.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhen does it ship, and what if I want to send it back?\u003c\/summary\u003e\u003cp\u003eOrders normally leave within one to two business days with free shipping inside the USA. Returns are accepted within 30 days; the terms are on the refund policy page.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cp class=\"support\"\u003eStill have a question? Email \u003ca href=\"mailto:info@acservicetech.com\"\u003einfo@acservicetech.com\u003c\/a\u003e and a person will answer.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"AC Service Tech","offers":[{"title":"Default Title","offer_id":67809675673813,"sku":null,"price":155.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/5401\/7237\/files\/5a0dbb_6d563ecd317b46c8a03b6c09a2b47e73_mv2.jpg?v=1792319004"},{"product_id":"refrigerant-paperback-workbook-combo","title":"NEW 2nd Edition Refrigerant Paperback and Workbook Combo","description":"\u003cstyle\u003e\n.cmp{font-family:'Open Sans',Arial,sans-serif;color:#2b2b2b;max-width:860px}\n.cmp,.cmp *{letter-spacing:normal !important}\n.cmp .lede{font-size:16px;line-height:1.7;margin:0 0 22px}\n.cmp .trust{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 30px}\n.cmp .trust div{border:1px solid #e2e8f0;border-radius:8px;padding:16px 18px;background:#fbfcfe}\n.cmp .trust h4{margin:0 0 7px;font-size:15px;font-weight:700;color:#272263}\n.cmp .trust p{margin:0;font-size:14px;line-height:1.6;color:#4a5568}\n.cmp .tabs{border-top:1px solid #e2e8f0;margin:0 0 34px}\n.cmp .tabs input{position:absolute;opacity:0;pointer-events:none}\n.cmp .tabrow{display:flex;gap:26px;border-bottom:1px solid #e2e8f0;flex-wrap:wrap}\n.cmp .tabrow label{padding:14px 2px;font-size:15px;font-weight:600;color:#6b7280;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}\n.cmp .tabrow label:hover{color:#272263}\n.cmp .panel{display:none;padding:20px 0 4px;font-size:15px;line-height:1.75}\n.cmp .panel ul{margin:10px 0 0;padding-left:20px}\n.cmp .panel li{margin:0 0 7px}\n.cmp #cmpt1:checked~.tabrow label[for=cmpt1],.cmp #cmpt2:checked~.tabrow label[for=cmpt2],.cmp #cmpt3:checked~.tabrow label[for=cmpt3]{color:#272263;border-bottom-color:#272263}\n.cmp #cmpt1:checked~#cmpp1,.cmp #cmpt2:checked~#cmpp2,.cmp #cmpt3:checked~#cmpp3{display:block}\n.cmp .feature{padding:30px 0;border-top:1px solid #eef1f6}\n.cmp .feature h3{font-size:21px;font-weight:700;color:#272263;margin:0 0 10px;line-height:1.35}\n.cmp .feature p{font-size:15px;line-height:1.75;margin:0 0 16px;color:#3f4a5a}\n.cmp .cta{display:inline-block;background:#272263;color:#fff !important;text-decoration:none;font-weight:700;font-size:13px;letter-spacing:.06em !important;text-transform:uppercase;padding:12px 26px;border-radius:5px}\n.cmp .cta:hover{background:#1a1460}\n.cmp .quotes{background:#f7f9fc;border-radius:10px;padding:28px 24px;margin:30px 0}\n.cmp .quotes h3{text-align:center;font-size:20px;font-weight:700;color:#272263;margin:0 0 6px}\n.cmp .quotes .sub{text-align:center;font-size:14px;color:#6b7280;margin:0 0 20px}\n.cmp .qcard{background:#fff;border:1px solid #e2e8f0;border-radius:8px;padding:18px 20px;max-width:560px;margin:0 auto}\n.cmp .qcard .stars{color:#f0a500;font-size:14px;margin:0 0 9px}\n.cmp .qcard blockquote{margin:0 0 12px;font-size:14px;line-height:1.75;color:#3f4a5a;font-style:italic}\n.cmp .qcard cite{font-size:13px;font-weight:700;color:#272263;font-style:normal}\n.cmp details{border:1px solid #e2e8f0;border-radius:6px;margin:0 0 9px;background:#fff}\n.cmp details summary{list-style:none;cursor:pointer;padding:14px 16px;font-size:15px;font-weight:600;color:#272263;display:flex;justify-content:space-between;align-items:center}\n.cmp details summary::-webkit-details-marker{display:none}\n.cmp details summary:after{content:'+';font-size:19px;color:#6b7280}\n.cmp details[open] summary:after{content:'\\2212'}\n.cmp details p{margin:0;padding:0 16px 15px;font-size:14px;line-height:1.75;color:#4a5568}\n.cmp .faqlabel{font-size:12px;font-weight:700;letter-spacing:.14em !important;text-transform:uppercase;color:#8b95a5;margin:30px 0 12px}\n.cmp .support{text-align:center;margin:24px 0 0;font-size:14px;color:#6b7280}\n@media(max-width:700px){.cmp .trust{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\n\u003cdiv class=\"cmp\"\u003e\n\n\u003cp class=\"lede\"\u003e\u003cstrong\u003eSave $10.\u003c\/strong\u003e The 2nd Edition of \u003cem\u003eRefrigerant Charging and Service Procedures for Air Conditioning\u003c\/em\u003e with its companion Workbook. Read the procedure, then prove you have it. By Craig Migliaccio. Free shipping in the USA.\u003c\/p\u003e\n\n\u003cdiv class=\"trust\"\u003e\n  \u003cdiv\u003e\n    \u003ch4\u003e30-day refund\u003c\/h4\u003e\n    \u003cp\u003eNot the right pair for you? Let us know inside 30 days and we refund it. The terms are on the refund policy page.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv\u003e\n    \u003ch4\u003eLicensed to teach the trade\u003c\/h4\u003e\n    \u003cp\u003eThe State of New Jersey licenses Craig Migliaccio to teach HVACR, Sheet Metal and Building Maintenance. He taught classes for years before writing any of this down.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"tabs\"\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt1\" checked\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt2\"\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt3\"\u003e\n  \u003cdiv class=\"tabrow\"\u003e\n    \u003clabel for=\"cmpt1\"\u003eWho this pair is for\u003c\/label\u003e\n    \u003clabel for=\"cmpt2\"\u003eHow to work through it\u003c\/label\u003e\n    \u003clabel for=\"cmpt3\"\u003eShipping \u0026amp; returns\u003c\/label\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp1\"\u003e\n    \u003cp\u003eThis is the study pair rather than the reference pair. It suits an apprentice working through charging for the first time, a tech preparing for a test, or anyone who has read enough HVAC books to know that reading is where it starts and not where it ends.\u003c\/p\u003e\n    \u003cp\u003eIt also suits instructors. Craig taught high school and adult HVACR classes, and the Workbook is built the way a class is built: a chapter, then questions on that chapter, then the gaps you did not know you had.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp2\"\u003e\n    \u003cp\u003eWork one chapter at a time, then answer the matching questions before moving on. There are over 1,600 questions in six different question types, so the same topic gets asked in more than one shape and you cannot pass it by recognising a sentence.\u003c\/p\u003e\n    \u003cp\u003eThe subjects you cover:\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003eTotal Superheat and Total Subcooling, and which metering device calls for which\u003c\/li\u003e\n      \u003cli\u003eThe total weight charging method, including refrigerant per foot of line set\u003c\/li\u003e\n      \u003cli\u003eRecovery, evacuation and the vacuum procedure\u003c\/li\u003e\n      \u003cli\u003eLeak detection methods and pressure testing limits\u003c\/li\u003e\n      \u003cli\u003eA2L refrigerants, R-32 and R-454B, with the tools and handling they require\u003c\/li\u003e\n      \u003cli\u003eTroubleshooting sequences and the readings behind each fault\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp3\"\u003e\n    \u003cp\u003eFree shipping within the USA. Orders normally leave within one to two business days. Returns are accepted within 30 days in resalable condition; the full terms are on the refund policy page.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eFind the gaps before the jobsite does.\u003c\/h3\u003e\n  \u003cp\u003eA book you have read feels like a book you know. The Workbook settles it: over 1,600 questions in six formats, which is enough repetition in enough different shapes that a weak spot has nowhere to hide. Every one you get wrong now is one you are not getting wrong on a call.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/ac-book\"\u003eSee what is in the A\/C book\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eWritten in the order the job happens.\u003c\/h3\u003e\n  \u003cp\u003ePlenty of HVAC books explain a topic and leave you to work out the sequence. This one is the sequence: what to measure, where to put the probe, what the number means, and what to do about it. The Workbook then asks you those same steps back in a different order, which is how the job asks them.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/resources\"\u003eBrowse the free resources\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eWorks as a course, not just a book.\u003c\/h3\u003e\n  \u003cp\u003eIf you are training somebody, or training yourself with nobody checking, the pair gives you the structure you would otherwise have to invent: material, questions, and a clear answer on whether it stuck. Keep the \u003ca href=\"\/pages\/pt-chart\"\u003eP\/T chart\u003c\/a\u003e and the \u003ca href=\"\/pages\/calculators\"\u003ecalculators\u003c\/a\u003e open alongside it.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/calculators\"\u003eUse the HVAC calculators\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"quotes\"\u003e\n  \u003ch3\u003eWhat techs say\u003c\/h3\u003e\n  \u003cp class=\"sub\"\u003eFrom AC Service Tech readers and viewers.\u003c\/p\u003e\n  \u003cdiv class=\"qcard\"\u003e\n    \u003cp class=\"stars\"\u003e★★★★★\u003c\/p\u003e\n    \u003cblockquote\u003e\"I have spent many years attending the finest courses and colleges to perfect my trade, however you are never too old to pick up new information and tips from other tradesmen. After scouring through literally thousands of YouTube videos, I came across AC Service Tech. I was astounded by the professionalism of this channel and the gentleman that runs it, and if you are a perfectionist, you can spot another perfectionist! I can't help thinking 'If I had my time again, I would love to have been taught by this guy'. Thank you for being an awesome resource.\"\u003c\/blockquote\u003e\n    \u003ccite\u003e— Stuart B., England, UK\u003c\/cite\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp class=\"faqlabel\"\u003eQuestions before you order\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eHow many questions does the workbook hold?\u003c\/summary\u003e\u003cp\u003eOver 1,600, across six different question types.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre the quick reference cards included?\u003c\/summary\u003e\u003cp\u003eNo. The HVAC Quick Reference Cards are sold on their own, and there is a combo that adds them to this pair.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this the 2nd Edition with A2L refrigerants?\u003c\/summary\u003e\u003cp\u003eYes. The 2nd Edition adds new tools, updated procedures and the A2L refrigerants R-32 and R-454B.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it cover mini splits?\u003c\/summary\u003e\u003cp\u003eNot the ductless-specific side. Inverter mini splits have their own title, \u003cem\u003eInverter Mini Split Operation and Service Procedures\u003c\/em\u003e, sold separately.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWho wrote them?\u003c\/summary\u003e\u003cp\u003eCraig Migliaccio, owner of AC Service Tech LLC, an HVACR Master License holder in New Jersey with over 16 years in the field and an HVAC contracting business of his own.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping and returns?\u003c\/summary\u003e\u003cp\u003eFree shipping inside the USA, normally out the door within one to two business days. Returns within 30 days; the terms are on the refund policy page.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cp class=\"support\"\u003eStill have a question? Email \u003ca href=\"mailto:info@acservicetech.com\"\u003einfo@acservicetech.com\u003c\/a\u003e and a person will answer.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"AC Service Tech","offers":[{"title":"Default Title","offer_id":67809675706581,"sku":null,"price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/5401\/7237\/files\/5a0dbb_0868be4ab4e749908a52539f7d24c534_mv2.jpg?v=1792319005"},{"product_id":"refrigerant-charging-mini-split-paperback-combo","title":"NEW 2nd Edition Refrigerant Charging \u0026 Mini Split Paperback Combo","description":"\u003cstyle\u003e\n.cmp{font-family:'Open Sans',Arial,sans-serif;color:#2b2b2b;max-width:860px}\n.cmp,.cmp *{letter-spacing:normal !important}\n.cmp .lede{font-size:16px;line-height:1.7;margin:0 0 22px}\n.cmp .trust{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 30px}\n.cmp .trust div{border:1px solid #e2e8f0;border-radius:8px;padding:16px 18px;background:#fbfcfe}\n.cmp .trust h4{margin:0 0 7px;font-size:15px;font-weight:700;color:#272263}\n.cmp .trust p{margin:0;font-size:14px;line-height:1.6;color:#4a5568}\n.cmp .tabs{border-top:1px solid #e2e8f0;margin:0 0 34px}\n.cmp .tabs input{position:absolute;opacity:0;pointer-events:none}\n.cmp .tabrow{display:flex;gap:26px;border-bottom:1px solid #e2e8f0;flex-wrap:wrap}\n.cmp .tabrow label{padding:14px 2px;font-size:15px;font-weight:600;color:#6b7280;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}\n.cmp .tabrow label:hover{color:#272263}\n.cmp .panel{display:none;padding:20px 0 4px;font-size:15px;line-height:1.75}\n.cmp .panel ul{margin:10px 0 0;padding-left:20px}\n.cmp .panel li{margin:0 0 7px}\n.cmp #cmpt1:checked~.tabrow label[for=cmpt1],.cmp #cmpt2:checked~.tabrow label[for=cmpt2],.cmp #cmpt3:checked~.tabrow label[for=cmpt3]{color:#272263;border-bottom-color:#272263}\n.cmp #cmpt1:checked~#cmpp1,.cmp #cmpt2:checked~#cmpp2,.cmp #cmpt3:checked~#cmpp3{display:block}\n.cmp .feature{padding:30px 0;border-top:1px solid #eef1f6}\n.cmp .feature h3{font-size:21px;font-weight:700;color:#272263;margin:0 0 10px;line-height:1.35}\n.cmp .feature p{font-size:15px;line-height:1.75;margin:0 0 16px;color:#3f4a5a}\n.cmp .cta{display:inline-block;background:#272263;color:#fff !important;text-decoration:none;font-weight:700;font-size:13px;letter-spacing:.06em !important;text-transform:uppercase;padding:12px 26px;border-radius:5px}\n.cmp .cta:hover{background:#1a1460}\n.cmp .quotes{background:#f7f9fc;border-radius:10px;padding:28px 24px;margin:30px 0}\n.cmp .quotes h3{text-align:center;font-size:20px;font-weight:700;color:#272263;margin:0 0 6px}\n.cmp .quotes .sub{text-align:center;font-size:14px;color:#6b7280;margin:0 0 20px}\n.cmp .qcard{background:#fff;border:1px solid #e2e8f0;border-radius:8px;padding:18px 20px;max-width:560px;margin:0 auto}\n.cmp .qcard .stars{color:#f0a500;font-size:14px;margin:0 0 9px}\n.cmp .qcard blockquote{margin:0 0 12px;font-size:14px;line-height:1.75;color:#3f4a5a;font-style:italic}\n.cmp .qcard cite{font-size:13px;font-weight:700;color:#272263;font-style:normal}\n.cmp details{border:1px solid #e2e8f0;border-radius:6px;margin:0 0 9px;background:#fff}\n.cmp details summary{list-style:none;cursor:pointer;padding:14px 16px;font-size:15px;font-weight:600;color:#272263;display:flex;justify-content:space-between;align-items:center}\n.cmp details summary::-webkit-details-marker{display:none}\n.cmp details summary:after{content:'+';font-size:19px;color:#6b7280}\n.cmp details[open] summary:after{content:'\\2212'}\n.cmp details p{margin:0;padding:0 16px 15px;font-size:14px;line-height:1.75;color:#4a5568}\n.cmp .faqlabel{font-size:12px;font-weight:700;letter-spacing:.14em !important;text-transform:uppercase;color:#8b95a5;margin:30px 0 12px}\n.cmp .support{text-align:center;margin:24px 0 0;font-size:14px;color:#6b7280}\n@media(max-width:700px){.cmp .trust{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\n\u003cdiv class=\"cmp\"\u003e\n\n\u003cp class=\"lede\"\u003e\u003cstrong\u003eSave $14.\u003c\/strong\u003e Both paperbacks in one set: \u003cem\u003eRefrigerant Charging and Service Procedures for Air Conditioning\u003c\/em\u003e (2nd Edition) and \u003cem\u003eInverter Mini Split Operation and Service Procedures\u003c\/em\u003e, by Craig Migliaccio. Free shipping in the USA.\u003c\/p\u003e\n\n\u003cdiv class=\"trust\"\u003e\n  \u003cdiv\u003e\n    \u003ch4\u003e30-Day Money-Back Guarantee\u003c\/h4\u003e\n    \u003cp\u003eIf the books are not what you needed, tell us within 30 days for a refund. The terms are on the refund policy page.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv\u003e\n    \u003ch4\u003eWritten by a licensed HVACR instructor\u003c\/h4\u003e\n    \u003cp\u003eCraig Migliaccio holds an HVACR Master License and is licensed by the State of New Jersey to teach HVACR, Sheet Metal and Building Maintenance.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"tabs\"\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt1\" checked\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt2\"\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt3\"\u003e\n  \u003cdiv class=\"tabrow\"\u003e\n    \u003clabel for=\"cmpt1\"\u003eAbout these books\u003c\/label\u003e\n    \u003clabel for=\"cmpt2\"\u003eWhat is inside\u003c\/label\u003e\n    \u003clabel for=\"cmpt3\"\u003eShipping \u0026amp; returns\u003c\/label\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp1\"\u003e\n    \u003cp\u003eMost HVAC books explain the topics but leave out the procedure. These two were written the other way round: step by step, in the order you actually do the work in the field.\u003c\/p\u003e\n    \u003cp\u003eThe 2nd Edition of \u003cem\u003eRefrigerant Charging and Service Procedures for Air Conditioning\u003c\/em\u003e covers new tools, updated procedures and the A2L refrigerants, including R-32 and R-454B. \u003cem\u003eInverter Mini Split Operation and Service Procedures\u003c\/em\u003e covers the ductless side, where fixed superheat and subcooling targets no longer behave the way they do on a single speed system.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp2\"\u003e\n    \u003cp\u003eBetween the two paperbacks you get:\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003eTotal Superheat and Subcooling, and which metering device calls for which\u003c\/li\u003e\n      \u003cli\u003eThe total weight charging method, including refrigerant per foot of line set\u003c\/li\u003e\n      \u003cli\u003eRecovery, evacuation and the vacuum procedure\u003c\/li\u003e\n      \u003cli\u003eLeak detection methods and pressure testing limits\u003c\/li\u003e\n      \u003cli\u003eA2L refrigerants: R-32 and R-454B, tools and handling\u003c\/li\u003e\n      \u003cli\u003eInverter mini split operation, commissioning, flaring and diagnostics\u003c\/li\u003e\n      \u003cli\u003eTroubleshooting sequences with the readings that point to each fault\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp3\"\u003e\n    \u003cp\u003eFree shipping within the USA. Orders normally leave within one to two business days. Returns are accepted within 30 days in resalable condition; see the refund policy page for the full terms.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eProcedures you carry out, not just theory you read.\u003c\/h3\u003e\n  \u003cp\u003eCraig taught HVACR to high school and adult students before writing any of this down. The books follow the order of the job: what to measure, where to measure it, what the number means, and what to do next. That is the gap he could not find a book for, so he wrote one.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/ac-book\"\u003eSee what is in the A\/C book\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eBoth sides of the trade in one set.\u003c\/h3\u003e\n  \u003cp\u003eDucted split systems and ductless mini splits do not diagnose the same way. Charging an inverter unit by the numbers you would use on a single speed condenser will send you down the wrong path. This combo covers both so you are not guessing when the next call is a mini split.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/mini-split-book\"\u003eSee what is in the mini split book\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eA reference that stays in the truck.\u003c\/h3\u003e\n  \u003cp\u003eKeep them beside the \u003ca href=\"\/pages\/pt-chart\"\u003eP\/T Chart\u003c\/a\u003e and the \u003ca href=\"\/pages\/calculators\"\u003eHVAC calculators\u003c\/a\u003e. These are books you open again when the next unit does something you have not seen before, not ones you read once and shelve.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/resources\"\u003eBrowse the free resources\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"quotes\"\u003e\n  \u003ch3\u003eWhat techs say\u003c\/h3\u003e\n  \u003cp class=\"sub\"\u003eFrom AC Service Tech readers and viewers.\u003c\/p\u003e\n  \u003cdiv class=\"qcard\"\u003e\n    \u003cp class=\"stars\"\u003e★★★★★\u003c\/p\u003e\n    \u003cblockquote\u003e\"I have spent many years attending the finest courses and colleges to perfect my trade, however you are never too old to pick up new information and tips from other tradesmen. After scouring through literally thousands of YouTube videos, I came across AC Service Tech. I was astounded by the professionalism of this channel and the gentleman that runs it, and if you are a perfectionist, you can spot another perfectionist! I can't help thinking 'If I had my time again, I would love to have been taught by this guy'. Thank you for being an awesome resource.\"\u003c\/blockquote\u003e\n    \u003ccite\u003e— Stuart B., England, UK\u003c\/cite\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp class=\"faqlabel\"\u003eQuestions before you order\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eWho wrote these books?\u003c\/summary\u003e\u003cp\u003eCraig Migliaccio, owner of AC Service Tech LLC. He holds an HVACR Master License in New Jersey, is licensed by the state to teach HVACR, Sheet Metal and Building Maintenance, has over 16 years in the field and owns an HVAC contracting business.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this the updated edition with A2L refrigerants?\u003c\/summary\u003e\u003cp\u003eYes. The air conditioning title is the 2nd Edition, which adds new tools, updated procedures and the A2L refrigerants including R-32 and R-454B.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre the workbooks included?\u003c\/summary\u003e\u003cp\u003eNo. This combo is the two paperbacks. The companion workbook, with over 1,600 questions across six question types, is sold separately.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eI am new to the trade. Is this too advanced?\u003c\/summary\u003e\u003cp\u003eThey are written for both. Craig taught beginners for years, so procedures are explained from the start, while the troubleshooting sequences stay useful once you have experience.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eOrders normally leave within one to two business days, with free shipping inside the USA.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat if it is not what I needed?\u003c\/summary\u003e\u003cp\u003eTell us within 30 days and we will refund it. The full terms are on the refund policy page.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cp class=\"support\"\u003eStill have a question? Email \u003ca href=\"mailto:info@acservicetech.com\"\u003einfo@acservicetech.com\u003c\/a\u003e and a person will answer.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"AC Service Tech","offers":[{"title":"Default Title","offer_id":67809675739349,"sku":null,"price":185.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/5401\/7237\/files\/5a0dbb_dcb17afe610747dc9dcd6ded8c44af23_mv2.jpg?v=1792319005"},{"product_id":"refrigerant-paperback-card-combo","title":"NEW 2nd Edition Refrigerant Paperback and Card Combo","description":"\u003cstyle\u003e\n.cmp{font-family:'Open Sans',Arial,sans-serif;color:#2b2b2b;max-width:860px}\n.cmp,.cmp *{letter-spacing:normal !important}\n.cmp .lede{font-size:16px;line-height:1.7;margin:0 0 22px}\n.cmp .trust{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 30px}\n.cmp .trust div{border:1px solid #e2e8f0;border-radius:8px;padding:16px 18px;background:#fbfcfe}\n.cmp .trust h4{margin:0 0 7px;font-size:15px;font-weight:700;color:#272263}\n.cmp .trust p{margin:0;font-size:14px;line-height:1.6;color:#4a5568}\n.cmp .tabs{border-top:1px solid #e2e8f0;margin:0 0 34px}\n.cmp .tabs input{position:absolute;opacity:0;pointer-events:none}\n.cmp .tabrow{display:flex;gap:26px;border-bottom:1px solid #e2e8f0;flex-wrap:wrap}\n.cmp .tabrow label{padding:14px 2px;font-size:15px;font-weight:600;color:#6b7280;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}\n.cmp .tabrow label:hover{color:#272263}\n.cmp .panel{display:none;padding:20px 0 4px;font-size:15px;line-height:1.75}\n.cmp .panel ul{margin:10px 0 0;padding-left:20px}\n.cmp .panel li{margin:0 0 7px}\n.cmp #cmpt1:checked~.tabrow label[for=cmpt1],.cmp #cmpt2:checked~.tabrow label[for=cmpt2],.cmp #cmpt3:checked~.tabrow label[for=cmpt3]{color:#272263;border-bottom-color:#272263}\n.cmp #cmpt1:checked~#cmpp1,.cmp #cmpt2:checked~#cmpp2,.cmp #cmpt3:checked~#cmpp3{display:block}\n.cmp .feature{padding:30px 0;border-top:1px solid #eef1f6}\n.cmp .feature h3{font-size:21px;font-weight:700;color:#272263;margin:0 0 10px;line-height:1.35}\n.cmp .feature p{font-size:15px;line-height:1.75;margin:0 0 16px;color:#3f4a5a}\n.cmp .cta{display:inline-block;background:#272263;color:#fff !important;text-decoration:none;font-weight:700;font-size:13px;letter-spacing:.06em !important;text-transform:uppercase;padding:12px 26px;border-radius:5px}\n.cmp .cta:hover{background:#1a1460}\n.cmp .quotes{background:#f7f9fc;border-radius:10px;padding:28px 24px;margin:30px 0}\n.cmp .quotes h3{text-align:center;font-size:20px;font-weight:700;color:#272263;margin:0 0 6px}\n.cmp .quotes .sub{text-align:center;font-size:14px;color:#6b7280;margin:0 0 20px}\n.cmp .qcard{background:#fff;border:1px solid #e2e8f0;border-radius:8px;padding:18px 20px;max-width:560px;margin:0 auto}\n.cmp .qcard .stars{color:#f0a500;font-size:14px;margin:0 0 9px}\n.cmp .qcard blockquote{margin:0 0 12px;font-size:14px;line-height:1.75;color:#3f4a5a;font-style:italic}\n.cmp .qcard cite{font-size:13px;font-weight:700;color:#272263;font-style:normal}\n.cmp details{border:1px solid #e2e8f0;border-radius:6px;margin:0 0 9px;background:#fff}\n.cmp details summary{list-style:none;cursor:pointer;padding:14px 16px;font-size:15px;font-weight:600;color:#272263;display:flex;justify-content:space-between;align-items:center}\n.cmp details summary::-webkit-details-marker{display:none}\n.cmp details summary:after{content:'+';font-size:19px;color:#6b7280}\n.cmp details[open] summary:after{content:'\\2212'}\n.cmp details p{margin:0;padding:0 16px 15px;font-size:14px;line-height:1.75;color:#4a5568}\n.cmp .faqlabel{font-size:12px;font-weight:700;letter-spacing:.14em !important;text-transform:uppercase;color:#8b95a5;margin:30px 0 12px}\n.cmp .support{text-align:center;margin:24px 0 0;font-size:14px;color:#6b7280}\n@media(max-width:700px){.cmp .trust{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\n\u003cdiv class=\"cmp\"\u003e\n\n\u003cp class=\"lede\"\u003e\u003cstrong\u003eSave $8.\u003c\/strong\u003e The 2nd Edition of \u003cem\u003eRefrigerant Charging and Service Procedures for Air Conditioning\u003c\/em\u003e by Craig Migliaccio, with the HVAC Quick Reference Cards. The whole procedure on the bench, the numbers in your pocket. Free shipping in the USA.\u003c\/p\u003e\n\n\u003cdiv class=\"trust\"\u003e\n  \u003cdiv\u003e\n    \u003ch4\u003eSend it back within 30 days\u003c\/h4\u003e\n    \u003cp\u003eIf this is not the pair you needed, tell us inside 30 days for a refund. The terms sit on the refund policy page.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv\u003e\n    \u003ch4\u003eA2L charts on the card\u003c\/h4\u003e\n    \u003cp\u003eThe Quick Reference Cards carry A2L pressure\/temperature charts and refrigerant weight charts, so R-32 and R-454B numbers are on you at the unit.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"tabs\"\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt1\" checked\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt2\"\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt3\"\u003e\n  \u003cdiv class=\"tabrow\"\u003e\n    \u003clabel for=\"cmpt1\"\u003eAbout this pair\u003c\/label\u003e\n    \u003clabel for=\"cmpt2\"\u003eWhat is on the cards\u003c\/label\u003e\n    \u003clabel for=\"cmpt3\"\u003eShipping \u0026amp; returns\u003c\/label\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp1\"\u003e\n    \u003cp\u003eThis is the working pair rather than the study pair. The paperback is where you learn the procedure properly; the cards are what you have on you once you already know it and just need the number.\u003c\/p\u003e\n    \u003cp\u003eThe 2nd Edition covers new tools, updated procedures and the A2L refrigerants R-32 and R-454B. The cards exist because the pressures and weights are the part you look up again and again, and digging through a book while the gauges are on is a slow way to find them.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp2\"\u003e\n    \u003cp\u003eThe HVAC Quick Reference Cards hold:\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003eA2L pressure\/temperature charts\u003c\/li\u003e\n      \u003cli\u003eRefrigerant weight charts\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp\u003eThe paperback behind them covers the full procedure:\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003eTotal Superheat and Total Subcooling, and which metering device calls for which\u003c\/li\u003e\n      \u003cli\u003eThe total weight charging method, including refrigerant per foot of line set\u003c\/li\u003e\n      \u003cli\u003eRecovery, evacuation and the vacuum procedure\u003c\/li\u003e\n      \u003cli\u003eLeak detection methods and pressure testing limits\u003c\/li\u003e\n      \u003cli\u003eA2L handling, tools and the service procedures that go with R-32 and R-454B\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp3\"\u003e\n    \u003cp\u003eFree shipping within the USA. Orders normally leave within one to two business days. Returns are accepted within 30 days in resalable condition; the full terms are on the refund policy page.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eNobody reads a paperback on a roof.\u003c\/h3\u003e\n  \u003cp\u003eThe card is the half of this pair that travels. Pressure\/temperature and refrigerant weight are the two lookups that interrupt the job, and having them in your hand instead of in a bag in the van is the difference between a glance and a walk back to the truck.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/pt-chart\"\u003eCheck the P\/T chart\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eBehind the card is the whole procedure.\u003c\/h3\u003e\n  \u003cp\u003eA chart tells you a number. It does not tell you which metering device changes the target, why your subcooling reading is lying to you, or what to do with the result. That is the book, written in field order: measure, read, interpret, act.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/ac-book\"\u003eSee what is in the A\/C book\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003ePairs with the free tools.\u003c\/h3\u003e\n  \u003cp\u003eThe card covers you when there is no signal and no spare hand. When you do have a phone free, the online \u003ca href=\"\/pages\/pt-chart\"\u003eP\/T chart\u003c\/a\u003e and the \u003ca href=\"\/pages\/calculators\"\u003eHVAC calculators\u003c\/a\u003e go further, and they cost nothing.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/calculators\"\u003eUse the HVAC calculators\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"quotes\"\u003e\n  \u003ch3\u003eFrom a reader\u003c\/h3\u003e\n  \u003cp class=\"sub\"\u003eSent in to AC Service Tech.\u003c\/p\u003e\n  \u003cdiv class=\"qcard\"\u003e\n    \u003cp class=\"stars\"\u003e★★★★★\u003c\/p\u003e\n    \u003cblockquote\u003e\"I have spent many years attending the finest courses and colleges to perfect my trade, however you are never too old to pick up new information and tips from other tradesmen. After scouring through literally thousands of YouTube videos, I came across AC Service Tech. I was astounded by the professionalism of this channel and the gentleman that runs it, and if you are a perfectionist, you can spot another perfectionist! I can't help thinking 'If I had my time again, I would love to have been taught by this guy'. Thank you for being an awesome resource.\"\u003c\/blockquote\u003e\n    \u003ccite\u003e— Stuart B., England, UK\u003c\/cite\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp class=\"faqlabel\"\u003eQuestions before you order\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat charts are on the quick reference cards?\u003c\/summary\u003e\u003cp\u003eA2L pressure\/temperature charts and refrigerant weight charts.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the workbook included?\u003c\/summary\u003e\u003cp\u003eNo. The companion Workbook, with over 1,600 questions across six question types, is a separate item. There is a combo that adds it.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the book the 2nd Edition?\u003c\/summary\u003e\u003cp\u003eYes, the 2nd Edition, which adds new tools, updated procedures and the A2L refrigerants R-32 and R-454B.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWho wrote the book?\u003c\/summary\u003e\u003cp\u003eCraig Migliaccio, owner of AC Service Tech LLC. He holds an HVACR Master License in New Jersey, is licensed by the state to teach HVACR, Sheet Metal and Building Maintenance, and has over 16 years in the field alongside his own HVAC contracting business.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this cover ductless mini splits?\u003c\/summary\u003e\u003cp\u003eNot the inverter-specific procedures. Those are in \u003cem\u003eInverter Mini Split Operation and Service Procedures\u003c\/em\u003e, sold separately.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow fast does it ship?\u003c\/summary\u003e\u003cp\u003eNormally within one to two business days, with free shipping inside the USA. Returns are accepted within 30 days; the terms are on the refund policy page.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cp class=\"support\"\u003eStill have a question? Email \u003ca href=\"mailto:info@acservicetech.com\"\u003einfo@acservicetech.com\u003c\/a\u003e and a person will answer.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"AC Service Tech","offers":[{"title":"Default Title","offer_id":67809675772117,"sku":null,"price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/5401\/7237\/files\/5a0dbb_67edf2aa39af46ef8398b912f6d14c50_mv2.jpg?v=1792319006"},{"product_id":"refrigerant-paperback-unconformed-combo","title":"NEW 2nd Edition Refrigerant Paperback and Unconformed Combo","description":"\u003cstyle\u003e\n.cmp{font-family:'Open Sans',Arial,sans-serif;color:#2b2b2b;max-width:860px}\n.cmp,.cmp *{letter-spacing:normal !important}\n.cmp .lede{font-size:16px;line-height:1.7;margin:0 0 22px}\n.cmp .trust{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 30px}\n.cmp .trust div{border:1px solid #e2e8f0;border-radius:8px;padding:16px 18px;background:#fbfcfe}\n.cmp .trust h4{margin:0 0 7px;font-size:15px;font-weight:700;color:#272263}\n.cmp .trust p{margin:0;font-size:14px;line-height:1.6;color:#4a5568}\n.cmp .tabs{border-top:1px solid #e2e8f0;margin:0 0 34px}\n.cmp .tabs input{position:absolute;opacity:0;pointer-events:none}\n.cmp .tabrow{display:flex;gap:26px;border-bottom:1px solid #e2e8f0;flex-wrap:wrap}\n.cmp .tabrow label{padding:14px 2px;font-size:15px;font-weight:600;color:#6b7280;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}\n.cmp .tabrow label:hover{color:#272263}\n.cmp .panel{display:none;padding:20px 0 4px;font-size:15px;line-height:1.75}\n.cmp .panel ul{margin:10px 0 0;padding-left:20px}\n.cmp .panel li{margin:0 0 7px}\n.cmp #cmpt1:checked~.tabrow label[for=cmpt1],.cmp #cmpt2:checked~.tabrow label[for=cmpt2],.cmp #cmpt3:checked~.tabrow label[for=cmpt3]{color:#272263;border-bottom-color:#272263}\n.cmp #cmpt1:checked~#cmpp1,.cmp #cmpt2:checked~#cmpp2,.cmp #cmpt3:checked~#cmpp3{display:block}\n.cmp .feature{padding:30px 0;border-top:1px solid #eef1f6}\n.cmp .feature h3{font-size:21px;font-weight:700;color:#272263;margin:0 0 10px;line-height:1.35}\n.cmp .feature p{font-size:15px;line-height:1.75;margin:0 0 16px;color:#3f4a5a}\n.cmp .cta{display:inline-block;background:#272263;color:#fff !important;text-decoration:none;font-weight:700;font-size:13px;letter-spacing:.06em !important;text-transform:uppercase;padding:12px 26px;border-radius:5px}\n.cmp .cta:hover{background:#1a1460}\n.cmp .quotes{background:#f7f9fc;border-radius:10px;padding:28px 24px;margin:30px 0}\n.cmp .quotes h3{text-align:center;font-size:20px;font-weight:700;color:#272263;margin:0 0 6px}\n.cmp .quotes .sub{text-align:center;font-size:14px;color:#6b7280;margin:0 0 20px}\n.cmp .qcard{background:#fff;border:1px solid #e2e8f0;border-radius:8px;padding:18px 20px;max-width:560px;margin:0 auto}\n.cmp .qcard .stars{color:#f0a500;font-size:14px;margin:0 0 9px}\n.cmp .qcard blockquote{margin:0 0 12px;font-size:14px;line-height:1.75;color:#3f4a5a;font-style:italic}\n.cmp .qcard cite{font-size:13px;font-weight:700;color:#272263;font-style:normal}\n.cmp details{border:1px solid #e2e8f0;border-radius:6px;margin:0 0 9px;background:#fff}\n.cmp details summary{list-style:none;cursor:pointer;padding:14px 16px;font-size:15px;font-weight:600;color:#272263;display:flex;justify-content:space-between;align-items:center}\n.cmp details summary::-webkit-details-marker{display:none}\n.cmp details summary:after{content:'+';font-size:19px;color:#6b7280}\n.cmp details[open] summary:after{content:'\\2212'}\n.cmp details p{margin:0;padding:0 16px 15px;font-size:14px;line-height:1.75;color:#4a5568}\n.cmp .faqlabel{font-size:12px;font-weight:700;letter-spacing:.14em !important;text-transform:uppercase;color:#8b95a5;margin:30px 0 12px}\n.cmp .support{text-align:center;margin:24px 0 0;font-size:14px;color:#6b7280}\n@media(max-width:700px){.cmp .trust{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\n\u003cdiv class=\"cmp\"\u003e\n\n\u003cp class=\"lede\"\u003e\u003cstrong\u003eSave $5.\u003c\/strong\u003e Two books doing two different jobs: the 2nd Edition of \u003cem\u003eRefrigerant Charging and Service Procedures for Air Conditioning\u003c\/em\u003e by Craig Migliaccio, and \u003cem\u003eUnconformed: An Unbound and Unbridled Path to Unstuck Growth\u003c\/em\u003e by Bryan Orr. Free shipping in the USA.\u003c\/p\u003e\n\n\u003cdiv class=\"trust\"\u003e\n  \u003cdiv\u003e\n    \u003ch4\u003e30 days, no argument\u003c\/h4\u003e\n    \u003cp\u003eIf the pair is not what you wanted, tell us inside 30 days and we refund it. The terms are on the refund policy page.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv\u003e\n    \u003ch4\u003eTwo authors, kept separate\u003c\/h4\u003e\n    \u003cp\u003eThe charging manual is Craig Migliaccio's. \u003cem\u003eUnconformed\u003c\/em\u003e is Bryan Orr's, included here as a separate title. It is not an HVAC procedures book.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"tabs\"\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt1\" checked\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt2\"\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt3\"\u003e\n  \u003cdiv class=\"tabrow\"\u003e\n    \u003clabel for=\"cmpt1\"\u003eWhat is in this pair\u003c\/label\u003e\n    \u003clabel for=\"cmpt2\"\u003eTwo different reads\u003c\/label\u003e\n    \u003clabel for=\"cmpt3\"\u003eShipping \u0026amp; returns\u003c\/label\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp1\"\u003e\n    \u003cp\u003e\u003cstrong\u003e\u003cem\u003eRefrigerant Charging and Service Procedures for Air Conditioning\u003c\/em\u003e, 2nd Edition.\u003c\/strong\u003e Craig Migliaccio's charging and service manual, written step by step in the order the work happens. The 2nd Edition adds new tools, updated procedures and the A2L refrigerants R-32 and R-454B.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003e\u003cem\u003eUnconformed: An Unbound and Unbridled Path to Unstuck Growth\u003c\/em\u003e.\u003c\/strong\u003e A separate title by Bryan Orr. It is not about refrigerant, pressures or procedure, and it is not by Craig. It is included here as the second book in the bundle.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp2\"\u003e\n    \u003cp\u003eThese two are not a course and a workbook. They are a technical manual and a book about growth, bought together at $5 off the separate prices.\u003c\/p\u003e\n    \u003cp\u003eThe charging manual gives you the procedure side:\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003eTotal Superheat and Total Subcooling, and which metering device calls for which\u003c\/li\u003e\n      \u003cli\u003eThe total weight charging method, including refrigerant per foot of line set\u003c\/li\u003e\n      \u003cli\u003eRecovery, evacuation and the vacuum procedure\u003c\/li\u003e\n      \u003cli\u003eLeak detection methods and pressure testing limits\u003c\/li\u003e\n      \u003cli\u003eA2L refrigerants, R-32 and R-454B, with the tools and handling they require\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp\u003eIf all you want is the procedure side, buy the charging manual on its own, or pair it with its Workbook or the Quick Reference Cards instead.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp3\"\u003e\n    \u003cp\u003eFree shipping within the USA. Orders normally leave within one to two business days. Returns are accepted within 30 days in resalable condition; the full terms are on the refund policy page.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eThe technical half does the work.\u003c\/h3\u003e\n  \u003cp\u003eCraig Migliaccio holds an HVACR Master License in New Jersey, is licensed by the state to teach HVACR, Sheet Metal and Building Maintenance, has over 16 years in the field and runs an HVAC contracting business. The charging manual reads like that: what to measure, where, what the number means, what to do next.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/ac-book\"\u003eSee what is in the A\/C book\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eThe other half is not about refrigerant.\u003c\/h3\u003e\n  \u003cp\u003e\u003cem\u003eUnconformed: An Unbound and Unbridled Path to Unstuck Growth\u003c\/em\u003e is written by Bryan Orr, not by Craig Migliaccio, and it is a different kind of read. We are putting it in this bundle as a separate title rather than as a companion volume, so you know exactly what you are getting: one manual, one book about getting unstuck.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/collections\/all\"\u003eSee every title\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eIf you only want the manual, say so.\u003c\/h3\u003e\n  \u003cp\u003eThis bundle makes sense if both books appeal. If only the charging side does, the manual is sold on its own, and the combos that add the Workbook or the Quick Reference Cards will serve you better than this one. We would rather you bought the right bundle than the bigger one.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/resources\"\u003eBrowse the free resources\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"quotes\"\u003e\n  \u003ch3\u003eWhat techs say about the A\/C book\u003c\/h3\u003e\n  \u003cp class=\"sub\"\u003eFrom AC Service Tech readers and viewers.\u003c\/p\u003e\n  \u003cdiv class=\"qcard\"\u003e\n    \u003cp class=\"stars\"\u003e★★★★★\u003c\/p\u003e\n    \u003cblockquote\u003e\"I have spent many years attending the finest courses and colleges to perfect my trade, however you are never too old to pick up new information and tips from other tradesmen. After scouring through literally thousands of YouTube videos, I came across AC Service Tech. I was astounded by the professionalism of this channel and the gentleman that runs it, and if you are a perfectionist, you can spot another perfectionist! I can't help thinking 'If I had my time again, I would love to have been taught by this guy'. Thank you for being an awesome resource.\"\u003c\/blockquote\u003e\n    \u003ccite\u003e— Stuart B., England, UK\u003c\/cite\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp class=\"faqlabel\"\u003eQuestions before you order\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eWho wrote Unconformed?\u003c\/summary\u003e\u003cp\u003eBryan Orr. It is his book, not Craig Migliaccio's, and it is included in this bundle as a separate title.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs Unconformed an HVAC manual?\u003c\/summary\u003e\u003cp\u003eNo. \u003cem\u003eUnconformed: An Unbound and Unbridled Path to Unstuck Growth\u003c\/em\u003e is about growth and getting unstuck rather than refrigerant procedure. If you want a second technical book, pair the charging manual with its Workbook or with the mini split title instead.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the charging book the 2nd Edition?\u003c\/summary\u003e\u003cp\u003eYes. The 2nd Edition adds new tools, updated procedures and the A2L refrigerants R-32 and R-454B.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I buy them separately?\u003c\/summary\u003e\u003cp\u003eYes. They are two separate titles. This listing is for taking both in one order at $5 off the separate prices.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWho is Craig Migliaccio?\u003c\/summary\u003e\u003cp\u003eThe owner of AC Service Tech LLC and the author of the charging manual. He holds an HVACR Master License in New Jersey, is licensed by the state to teach HVACR, Sheet Metal and Building Maintenance, has over 16 years in the field and owns an HVAC contracting business.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping and returns?\u003c\/summary\u003e\u003cp\u003eFree shipping inside the USA, normally out within one to two business days. Returns accepted within 30 days; the terms are on the refund policy page.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cp class=\"support\"\u003eStill have a question? Email \u003ca href=\"mailto:info@acservicetech.com\"\u003einfo@acservicetech.com\u003c\/a\u003e and a person will answer.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"AC Service Tech","offers":[{"title":"Default Title","offer_id":67809675804885,"sku":null,"price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/5401\/7237\/files\/5a0dbb_ec870ea39c364dfeaeaca5f52486ff5c_mv2.jpg?v=1792319006"},{"product_id":"mini-split-paperback-workbook-combo","title":"Mini Split Paperback and Workbook Combo","description":"\u003cstyle\u003e\n.cmp{font-family:'Open Sans',Arial,sans-serif;color:#2b2b2b;max-width:860px}\n.cmp,.cmp *{letter-spacing:normal !important}\n.cmp .lede{font-size:16px;line-height:1.7;margin:0 0 22px}\n.cmp .trust{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 30px}\n.cmp .trust div{border:1px solid #e2e8f0;border-radius:8px;padding:16px 18px;background:#fbfcfe}\n.cmp .trust h4{margin:0 0 7px;font-size:15px;font-weight:700;color:#272263}\n.cmp .trust p{margin:0;font-size:14px;line-height:1.6;color:#4a5568}\n.cmp .tabs{border-top:1px solid #e2e8f0;margin:0 0 34px}\n.cmp .tabs input{position:absolute;opacity:0;pointer-events:none}\n.cmp .tabrow{display:flex;gap:26px;border-bottom:1px solid #e2e8f0;flex-wrap:wrap}\n.cmp .tabrow label{padding:14px 2px;font-size:15px;font-weight:600;color:#6b7280;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}\n.cmp .tabrow label:hover{color:#272263}\n.cmp .panel{display:none;padding:20px 0 4px;font-size:15px;line-height:1.75}\n.cmp .panel ul{margin:10px 0 0;padding-left:20px}\n.cmp .panel li{margin:0 0 7px}\n.cmp #cmpt1:checked~.tabrow label[for=cmpt1],.cmp #cmpt2:checked~.tabrow label[for=cmpt2],.cmp #cmpt3:checked~.tabrow label[for=cmpt3]{color:#272263;border-bottom-color:#272263}\n.cmp #cmpt1:checked~#cmpp1,.cmp #cmpt2:checked~#cmpp2,.cmp #cmpt3:checked~#cmpp3{display:block}\n.cmp .feature{padding:30px 0;border-top:1px solid #eef1f6}\n.cmp .feature h3{font-size:21px;font-weight:700;color:#272263;margin:0 0 10px;line-height:1.35}\n.cmp .feature p{font-size:15px;line-height:1.75;margin:0 0 16px;color:#3f4a5a}\n.cmp .cta{display:inline-block;background:#272263;color:#fff !important;text-decoration:none;font-weight:700;font-size:13px;letter-spacing:.06em !important;text-transform:uppercase;padding:12px 26px;border-radius:5px}\n.cmp .cta:hover{background:#1a1460}\n.cmp .quotes{background:#f7f9fc;border-radius:10px;padding:28px 24px;margin:30px 0}\n.cmp .quotes h3{text-align:center;font-size:20px;font-weight:700;color:#272263;margin:0 0 6px}\n.cmp .quotes .sub{text-align:center;font-size:14px;color:#6b7280;margin:0 0 20px}\n.cmp .qcard{background:#fff;border:1px solid #e2e8f0;border-radius:8px;padding:18px 20px;max-width:560px;margin:0 auto}\n.cmp .qcard .stars{color:#f0a500;font-size:14px;margin:0 0 9px}\n.cmp .qcard blockquote{margin:0 0 12px;font-size:14px;line-height:1.75;color:#3f4a5a;font-style:italic}\n.cmp .qcard cite{font-size:13px;font-weight:700;color:#272263;font-style:normal}\n.cmp details{border:1px solid #e2e8f0;border-radius:6px;margin:0 0 9px;background:#fff}\n.cmp details summary{list-style:none;cursor:pointer;padding:14px 16px;font-size:15px;font-weight:600;color:#272263;display:flex;justify-content:space-between;align-items:center}\n.cmp details summary::-webkit-details-marker{display:none}\n.cmp details summary:after{content:'+';font-size:19px;color:#6b7280}\n.cmp details[open] summary:after{content:'\\2212'}\n.cmp details p{margin:0;padding:0 16px 15px;font-size:14px;line-height:1.75;color:#4a5568}\n.cmp .faqlabel{font-size:12px;font-weight:700;letter-spacing:.14em !important;text-transform:uppercase;color:#8b95a5;margin:30px 0 12px}\n.cmp .support{text-align:center;margin:24px 0 0;font-size:14px;color:#6b7280}\n@media(max-width:700px){.cmp .trust{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\n\u003cdiv class=\"cmp\"\u003e\n\n\u003cp class=\"lede\"\u003e\u003cstrong\u003eSave $10.\u003c\/strong\u003e \u003cem\u003eInverter Mini Split Operation and Service Procedures\u003c\/em\u003e by Craig Migliaccio, with its companion workbook. For techs who keep getting handed ductless calls and want to stop guessing at them. Free shipping in the USA.\u003c\/p\u003e\n\n\u003cdiv class=\"trust\"\u003e\n  \u003cdiv\u003e\n    \u003ch4\u003e30 days to return it\u003c\/h4\u003e\n    \u003cp\u003eIf the pair is not what you needed, tell us inside 30 days for a refund. The terms are on the refund policy page.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv\u003e\n    \u003ch4\u003eDuctless, specifically\u003c\/h4\u003e\n    \u003cp\u003eThis pair is about inverter mini splits only. The refrigerant charging manual for ducted systems is a separate title.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"tabs\"\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt1\" checked\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt2\"\u003e\n  \u003cinput type=\"radio\" name=\"cmptabs\" id=\"cmpt3\"\u003e\n  \u003cdiv class=\"tabrow\"\u003e\n    \u003clabel for=\"cmpt1\"\u003eAbout this pair\u003c\/label\u003e\n    \u003clabel for=\"cmpt2\"\u003eWhy ductless is different\u003c\/label\u003e\n    \u003clabel for=\"cmpt3\"\u003eShipping \u0026amp; returns\u003c\/label\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp1\"\u003e\n    \u003cp\u003eDuctless went from a specialty to a normal week's work faster than most training caught up with. Plenty of good techs are servicing mini splits on habits carried over from single speed equipment, which is where the callbacks come from.\u003c\/p\u003e\n    \u003cp\u003eThe book covers inverter mini split operation and the service procedures that go with it. The companion workbook follows the book, so you can check whether the procedures stuck instead of assuming they did.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp2\"\u003e\n    \u003cp\u003eAn inverter system does not behave like a single speed condenser, and the habits that work on one will mislead you on the other.\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003eThe compressor changes speed while you are taking the reading, so a fixed superheat or subcooling target does not mean what it means on a single speed system\u003c\/li\u003e\n      \u003cli\u003eCommissioning carries more weight: the flare, the vacuum and the line set are where a lot of ductless faults are actually created\u003c\/li\u003e\n      \u003cli\u003eDiagnostics follow the unit's own operation rather than a generic split system sequence\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp\u003eCraig Migliaccio wrote this as procedure rather than theory: what the system is doing, what to measure, and what the reading is telling you.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"panel\" id=\"cmpp3\"\u003e\n    \u003cp\u003eFree shipping within the USA. Orders normally leave within one to two business days. Returns are accepted within 30 days in resalable condition; the full terms are on the refund policy page.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eAn inverter will not hold still for a fixed target.\u003c\/h3\u003e\n  \u003cp\u003eThis is the part that catches experienced techs. You put gauges on, read a superheat you do not like, and adjust against a number that was never the target in the first place, because the compressor is modulating underneath you. The book works through how the system actually operates first, so the readings mean something before you act on them.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/mini-split-book\"\u003eSee what is in the mini split book\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eMost ductless callbacks start at commissioning.\u003c\/h3\u003e\n  \u003cp\u003eA flare that was not made properly, a vacuum that was called good early, a line set charge nobody adjusted for length. None of it shows up on the day. It shows up in a month, as a complaint, and by then the install is behind a wall. The commissioning procedures are the cheapest part of this book to learn.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/pages\/resources\"\u003eBrowse the free resources\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"feature\"\u003e\n  \u003ch3\u003eThe workbook tells you whether it stuck.\u003c\/h3\u003e\n  \u003cp\u003eReading a procedure and performing it are two different skills, and nothing on the page tells you which one you have. The companion workbook follows the chapters and asks the material back, which is a cheaper place to be wrong than a customer's wall unit.\u003c\/p\u003e\n  \u003ca class=\"cta\" href=\"\/collections\/all\"\u003eSee every title\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"quotes\"\u003e\n  \u003ch3\u003eWhat techs say\u003c\/h3\u003e\n  \u003cp class=\"sub\"\u003eFrom AC Service Tech readers and viewers.\u003c\/p\u003e\n  \u003cdiv class=\"qcard\"\u003e\n    \u003cp class=\"stars\"\u003e★★★★★\u003c\/p\u003e\n    \u003cblockquote\u003e\"I have spent many years attending the finest courses and colleges to perfect my trade, however you are never too old to pick up new information and tips from other tradesmen. After scouring through literally thousands of YouTube videos, I came across AC Service Tech. I was astounded by the professionalism of this channel and the gentleman that runs it, and if you are a perfectionist, you can spot another perfectionist! I can't help thinking 'If I had my time again, I would love to have been taught by this guy'. Thank you for being an awesome resource.\"\u003c\/blockquote\u003e\n    \u003ccite\u003e— Stuart B., England, UK\u003c\/cite\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp class=\"faqlabel\"\u003eQuestions before you order\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eWho wrote these?\u003c\/summary\u003e\u003cp\u003eCraig Migliaccio, owner of AC Service Tech LLC. He holds an HVACR Master License in New Jersey, is licensed by the state to teach HVACR, Sheet Metal and Building Maintenance, has over 16 years in the field and owns an HVAC contracting business.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the refrigerant charging book included?\u003c\/summary\u003e\u003cp\u003eNo. \u003cem\u003eRefrigerant Charging and Service Procedures for Air Conditioning\u003c\/em\u003e is a separate title, now in its 2nd Edition with the A2L refrigerants R-32 and R-454B. There is a combo that pairs both paperbacks if you want the ducted side too.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat does the workbook do?\u003c\/summary\u003e\u003cp\u003eIt follows the mini split book, so you can work the material back and find out which procedures you have actually retained.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eI have barely touched ductless. Is this too advanced?\u003c\/summary\u003e\u003cp\u003eCraig taught HVACR to high school and adult students for years, and the book starts with how the system operates before it gets to diagnostics. If you have serviced conventional split systems, you have enough to start here.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhen will it arrive?\u003c\/summary\u003e\u003cp\u003eOrders normally leave within one to two business days, with free shipping inside the USA.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat if it is not what I needed?\u003c\/summary\u003e\u003cp\u003eTell us within 30 days and we will refund it. The full terms are on the refund policy page.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cp class=\"support\"\u003eStill have a question? Email \u003ca href=\"mailto:info@acservicetech.com\"\u003einfo@acservicetech.com\u003c\/a\u003e and a person will answer.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"AC Service Tech","offers":[{"title":"Default Title","offer_id":67809675837653,"sku":null,"price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/5401\/7237\/files\/5a0dbb_47a38878253f4459b042985ec3a37273_mv2.jpg?v=1792319005"}],"url":"https:\/\/acservicetech.us\/collections\/bundles-combos.oembed","provider":"Ac service tech","version":"1.0","type":"link"}