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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| 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... | ||
| TM31 with low oil level 04/02/2026 in the HVAC Forum I found a truck that had somehow had it's low pressure line loosen at the compressor. Miraculously there is still pressure in the system but oil left at the line to drip down the side of the block. There is no oil in the sight glass. After I replace the o... | ||
| Need Adapter for Nitrogen Testing R134a to R1234yf 03/27/2026 in the HVAC Forum We have a nitrogen pressure testing tool for ac that fits R134a. We are looking for an adapter fitting or hose so we can also use the tool to pressurize R1234yf systems. Is anyone aware of an adapter or hose swap? The easiest thing I can think of is a hos... | ||
| 2013 Equinox evaporator core 03/09/2026 in the HVAC Forum [HVAC: 13 Chevrolet Equinox LTZ 2.4L] We may need to replace the evaporator core on this vehicle. Seems like there may be some tricky procedures or tips on getting this job done if we decide to take this job on. |
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