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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| Repair of my old friend CPS AR300 05/30/2026 in the HVAC Forum As I am catching up on some shop maintenance my attention turns to my old RRR machine whose oil/ air drain valve continues to slowly leak when cycled after recovery and after charging vehicle. This started many years ago requiring me to remove the solenoi... | ||
| want to get a 1234yf machine 05/12/2026 in the HVAC Forum Hello all, I'm looking to buy a 1234yf refrigerant recovery machine. Don't want to break the bank, but a walk-away machine would work best for us. I realize I need this equipment as soon as possible. I currently have a Robinaire 134a machine that has been... | ||
| ECV, ECV Diagnostics Aids/Tools. Latest R-134a Type News 04/10/2026 in the HVAC Forum ECV, ECV Diagnostics Aids/Tools. Latest R-134a Type News Do you need an ECV diagnostic tool? Why not just command an ECV with a scan tool and not buy a separate ECV diagnostic tool? Is the compressor you are testing, ECV "positive side control, or ECV "ne... | ||
| small cans of 134a 04/09/2026 in the HVAC Forum It's been so long since I used a small can that I didn't know they had seals in them. The last I knew you pierced it and were committed. I used one last year and the refrigerant was very slow to come out. I mean really slow. Is this normal or do I have to... | ||
| Compressor operation 04/03/2026 in the HVAC Forum [HVAC: 13 BMW X1 xDrive28i 2.0L] Having trouble with this compressor system. The compressor will come on most of the time(clutch turning), but no pressure. It has some sort of sensor/control valve mounted in the rear of the compressor housing. I am think... |
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