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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| 87 Corvette noisey R4 compressor 08/04/2025 in the HVAC Forum Good Morning, Belongs to my good neighbor did him a favor and overhauled his AC , new 4S comp. accum, X tube, flush evap-cond, Pag , convert to 134A about one year ago, compressor made a slight rattling noise which over the years have seen many times,(wit... | ||
| Evaporator core replacement 07/26/2025 in the HVAC Forum [HVAC: 16 Volvo XC60 T6 2.0L] We are looking into replacing the evaporator core on this vehicle. I was kind of surprised to see that AD calls for only 3.8 hours? It shows some kind of a alternative way to change it dealing with cutting some heater hose p... | ||
| R-290 Refrigerant 07/22/2025 in the HVAC Forum R-290 is currently in development for use in many automotive applications. It has a very low GWP of 3 R-1234yf has a GWP of 4 R-744 has a GWP of 1 R-152a has a GWP of 124 and is approved as a low GWP refrigerant Ford had petitioned the EPA for approval to... | ||
| 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... |
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