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.
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| Seeking a rebuilder for an AC compressor 10/20/2026 in the HVAC Forum [HVAC: 96 Honda Prelude VTEC 2.2L] We have a pristine 96 Prelude in our shop with a munched AC compressor. We are unable to find a new or even reman compressor. It is a Hadsys model HS-090L. Any of you AC pros out there that can either point us to a sou... | ||
| What Refrigerant scale do folks recommend? 10/19/2026 in the HVAC Forum My old CPS scale finally died so I'm in the market for a new one. I prefer a scale only, not one that controls the charge. It needs to accommodate a 50lb recovery tank. What do you folks recommend as a replacement? Thanks! | ||
| hvac problem on 2022 t480 kw 09/29/2026 in the HVAC Forum see heavy duty forum please:. | ||
| Robinair 34788 oil drain fault 09/24/2026 in the HVAC Forum Hey everyone , got a question about our Robinair 43788 . Been in service for some years now with no major problems, but recently after a recovery operation found during the automatic oil drain it didn't stop the oil draining after the normal cycle. Notice... | ||
| A/C system surge/pulsation noise on engagement 09/24/2026 in the HVAC Forum [HVAC: 08 Dodge Ram 2500 SLT 6.7L] Hey folks, I got a weird one here. Never seen this before. On initial cold start engagement of A/C Compressor, it makes a loud rattling type noise the customer calls "Grinding". It does kinda sound like a grinding nois... |
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