Checking the Refrigerant Charge — PowerPoint Presentation
- From reading the gauges to disconnecting them on a running A/C
- Superheat and subcooling methods, step by step
- PowerPoint file with speaker notes
- 95 slides in 16:9 widescreen
Email infohvacresource@gmail.com and a real person will answer within one business day.
How it works
Check out as usual and your download link arrives right after your order is placed. Open the file on any phone, tablet or computer.
The presentation is an editable PowerPoint (.pptx) file, so you can add your own slides and notes.
What's inside
A training presentation by Charles Smith on checking the refrigerant charge of an air conditioner or heat pump in cooling mode. Built for instructors, trainers and shop meetings, it walks a class from reading the gauges to disconnecting them safely.
- Reading compound gauges and saturation temperatures
- Airflow checks and metering device types
- Connecting the gauge set and purging the hoses
- The superheat and subcooling methods
- Checking the charge on a running system
- Temperature split across the indoor coil
- Disconnecting the gauges safely
PowerPoint (.pptx) file with speaker notes.
Shipping and returns
Digital products are delivered instantly, so all eBook and download sales are final.
Full details: Shipping Policy and Refund Policy.
Why knowing the reason matters
Americans die each year from unintentional carbon monoxide poisoning not linked to fires.
Source: CDCHow much less energy an air conditioner can use when its filter is routinely replaced or cleaned.
Source: U.S. Department of EnergyFor refrigerant in new US home AC and heat pump systems made or imported since January 1, 2025.
Source: U.S. EPAFrequently asked questions
Who is this for?
Apprentices, students and working HVAC/R technicians who want to understand the reason behind the readings they take, not just memorize the numbers.
How long does delivery take?
Delivery takes 5 to 15 business days to the United States, Canada, the United Kingdom, Australia and New Zealand. Shipping is calculated at checkout, and you get a tracking number by email.
How do eBooks and digital downloads work?
Digital products are delivered right after checkout as a download you can open on any phone, tablet or computer. Because they are delivered instantly, digital sales are final.
What is your return policy?
You can request a return within 3 days of receiving your order. Items must be unused and in their original packaging. Approved refunds go back to your original payment method within 10 business days. See the full Refund Policy.
Do you have Spanish editions?
Yes. The Fundamentals Handbook comes in Spanish as a paperback, an eBook and a workbook, and the Inverter Mini Split guide comes in Spanish as a paperback. See the full catalog.
Can I order for my crew or class?
Yes. Choose Buy 2 or Buy 3 at the top of the page, or email infohvacresource@gmail.com for a larger order.
Does this replace local code or manufacturer instructions?
No. Our materials are for education and exam preparation. Always follow the codes that apply where you work and the manufacturer's instructions for the equipment you service.
Who do I contact with a question?
Email infohvacresource@gmail.com and a real person will answer within one business day.