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Automotive HVAC Forum

Professional automotive forum for discussion of heating, ventilation, and air conditioning maintenance and repairs. Includes discussion of refrigerants, refrigeration lubricants, system analysis and diagnostics, filtration, HVAC-specific tools & equipment, best practices, and more. This forum is for experienced automotive repair professionals only, membership required.

Continue to the description of our next automotive discussion forum, the Technical Discussion Forum.

Recent Automotive Discussions in the Automotive HVAC Forum

Flash gas! Sub-cooling!
11/14/2022 in the HVAC Forum
Oh my! Ok y'all, this is no surprise to me. The auto industry seems to have taken notice the past few years. They have discovered that by sub-cooling the liquid line before introducing the refrigerant to the evaporator, the air conditioner will perform be...
90 dodge ram retrofit
10/06/2022 in the HVAC Forum
Quick question. Got a 90 dodge truck a guy fixed up and it has a new style compressor that came with the serpentine belt system. Truck was original A/C truck so I made up some adapter lines to hook the new style compressor, and the guy gave me a new expan...
HVAC Equipment maintenance & Micron Gauges
09/19/2022 in the HVAC Forum
A current thread in Tools & Equipment reminds me of a discussion I had a while back. I was pointing out errors and omissions in an HVAC training program. A colleague (of sorts) was adament that none of that matters because: "Nobody has equipment that will...

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