Refrigerant recovery without a recovery machine
A field-focused article about a specific recovery situation.
HVAC learning resources
Find the answer you came for.
Some visitors are finding their way into HVAC. Others are already on a service call and need a specific technical reference. Start with the path that fits today.
For working technicians
HVAC tips, lessons, and troubleshooting.
Go straight to the subject you are researching. These older posts are being reviewed for technical currency. Follow current requirements, equipment instructions, and the procedures for your work.
The PT chart and saturation temperature
Connect refrigerant pressure readings with saturation temperature.
Steps to measuring superheat
A practical reference for one of the measurements technicians use.
Air conditioning repair: troubleshooting process
Work through the problem in a deliberate order.
Airflow calculation
The original airflow calculation reference for technicians.
Troubleshooting a Honeywell Smart Valve
Archived equipment-specific troubleshooting notes.
For future technicians
Start with a clearer picture of the trade.
You can explore HVAC without pretending you already know the language. Read about the work, then watch Ron explain a refrigeration concept in a free public video.
Watch Ron teachHow to learn HVAC
A starting point for exploring the trade and the learning path.
What does it take to be an air conditioning technician?
Get a clearer picture of the work before choosing training.
Is online HVAC training right for you?
Consider what online study can provide and where hands-on learning fits.
EPA Section 608 study
Looking for the EPA study material?
We preserved the original study page and PDF at their existing addresses. The PDF was created in 2011; check current EPA requirements and approved exam information before using it to prepare for certification.
These archived articles retain their original addresses. Some equipment details and regulations may have changed since publication.
For experienced technicians
Looking for other training?
Ron has also offered NATE preparation and commercial refrigeration courses. Review their course overviews and ask about current availability before deciding.
NATE course
Existing course information for technicians exploring NATE exams.
Commercial refrigeration
Existing course information for HVAC technicians expanding into refrigeration.