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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| expansion valve or compressor 07/14/2025 in the HVAC Forum [HVAC: 69 Ford Mustang 5.8L] This is my fathers car. The AC has always been a problem for leaks, not cooling well etc. This is an R!2 sysytem. It has a Sanden compressor, upgraded condenser and electric fans . This is a factory style ac unit. It does not... | ||
| 1234yf Leak Detection (95/5 hydrogen vs CO2) 07/11/2025 in the HVAC Forum In terms of electronic finding of small 1234yf leaks, especially evaporators, I think I've read everything posted over the last few years & wish to confirm my understanding of a couple points: 1)The 95/5 works well with proper operation of a good detector... | ||
| A/C won't shut off, 07/10/2025 in the HVAC Forum [HVAC: 15 Toyota Corolla LE Eco 1.8L] This car had us scratching our heads. It came in with the usual complaint, no cooling. An initial diagnostic showed correct type and amount of refrigerant. (R134a) The a/c compressor on this model (automatic climate ... | ||
| replacement line segments/ fittings 07/02/2025 in the HVAC Forum I would like to replace this rotted line segment at the outlet of the rear evaporator core of this vehicle and re-connect to the hose segment. This short, ninety-degree, aluminum segment has a barbed end for exiting into barrier hose and the evap core end... | ||
| AC hose replacement and oil adding to the system 06/29/2025 in the HVAC Forum This is a general hose replacement ? when you have a AC hose burst , rupture , etc.... How do you figure how much refrigerant oil to add to the system when doing repairs. I know theses systems are getting smaller and smaller and the refrigerant and refrig... |
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