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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

Contaminated refrigerent
07/02/2022 in the HVAC Forum
Hello, I live in Quebec. when I recover contaminated refrigerant, I do a recover with my old machine. but someday it will be full and I will have to dispose of the bad gas. I would like to know how to get rid of it and also how much to charge to customers...
DEC pag oil
07/01/2022 in the HVAC Forum
So, it seems the DEC PAG oils are preferred when doing major repairs needing refrigerant lubricant. If so, which brands are out there? We have been using FJC lubricants for a while, but if there is something better I am curious. Maybe FJC is DEC already. ...
Robinair LD7 sensor
06/30/2022 in the HVAC Forum
Having read thru Glenn Hartline's posts about new leak detection (THANKS!!!) we settled on the Robinair LD7, last year after getting our first R1234 machine. I've been very impressed with this unit as I have consistently confirmed evaporators in many unit...
Retrofitting advise
06/22/2022 in the HVAC Forum
[HVAC: 84 GMC G2500 Vandura 5.0L] I have been tasked with getting this previously retrofitted system working properly. Someone has removed the auxiliary unit and the hose once spliced into the suction line leaving it open. I have re-hosed the suction lin...
intermittent warm air
06/19/2022 in the HVAC Forum
[HVAC: 01 Nissan Altima SE 2.4L] This is my own car. 260k on the car runs fine and ac never touched( probably explode next week) intermittently when the weather is hot out (over 100f ) it will shut down and blow warm air for 1-2 mins then come back on. O...

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