HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting
Written in the order you do the job
Built on years in the trade and the classroom
Physical orders usually ship in 1-2 days
A refund if it is not for you
From the AC Service Tech channel
If it is not what you needed, tell us within 30 days for a refund. The terms are on the refund policy page.
The HVACR training brand behind the YouTube channel, the books and the HVAC Academy.
Durable quick reference cards for refrigerant charging targets and troubleshooting steps, built to be used in the field rather than read at a desk. P/T charts including the A2L refrigerants, and refrigerant weight charts, on cards you can keep in the gauge bag. Free shipping in the USA.
Made for the truck, not the shelf
Durable cards you can pull out with the gauges already on. No index, no chapters, no scrolling.
From a licensed HVACR instructor
Produced by AC Service Tech LLC. Craig Migliaccio holds an HVACR Master License and is licensed by the State of New Jersey to teach HVACR, Sheet Metal and Building Maintenance.
These are not a book. There is nothing to read through. They are the numbers and the steps you want in your hand while you are working: charging targets, the troubleshooting order, and the charts you would otherwise be squinting at on a phone with one glove off.
Think of them as the part of the manual you reach for most, pulled out and printed on something that survives a gauge bag.
The cards cover:
- Pressure and temperature charts, including the A2L refrigerants
- Refrigerant weight charts
- Refrigerant charging targets
- Troubleshooting steps in the order you work them
For the procedures behind these numbers, the Refrigerant Charging and Service Procedures for Air Conditioning manual is the full write-up.
Free 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.
Faster than your phone, every time.
By the time you have dried your hands, unlocked the phone and found the chart, the card would have been back in the bag. That is the whole case for these. The information is not new to you, it just needs to be reachable in two seconds.
See the P/T chartA2L charts included.
The A2L refrigerants are turning up on jobs now, and the pressures are not the ones you have memorised. Having their P/T data on the same card as everything else stops you working off the wrong column out of habit.
Read the charging proceduresThe reference, not the explanation.
The cards give you the numbers and the sequence. If you want to know why a target is what it is, that is what the books are for, and plenty of techs carry both. The HVAC calculators cover the rest.
See the charging manualWhat techs say
From AC Service Tech readers and viewers.
★★★★★
"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."— Stuart B., England, UK
Questions before you order
Is this a book?
No. These are quick reference cards. They carry charts, charging targets and troubleshooting steps for use on the job, not chapters of explanation.
Do the A2L refrigerants appear on them?
Yes. The cards include A2L pressure and temperature charts alongside the refrigerant weight charts.
Do I still need the book?
If you want the procedures explained, yes. The cards assume you know the procedure and just need the figures and the order of operations in front of you.
Will they survive being in a tool bag?
They are made as durable field cards rather than printed sheets, which is the point of them. Treat them as tools, not paperwork.
Is this a digital download?
No. These are physical cards, shipped to you.
How fast do they ship, and what if I need to return them?
Orders normally leave within one to two business days with free shipping inside the USA. If they are not what you needed, tell us within 30 days for a refund; the full terms are on the refund policy page.
Still have a question? Email info@acservicetech.com and a person will answer.