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Automotive HVAC Forum

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.

Continue to the description of our next automotive discussion forum, the Technical Discussion Forum.

Recent Automotive Discussions in the Automotive HVAC Forum

Flushing Machine
05/19/2025 in the HVAC Forum
[HVAC: 16 Ford Transit-250 3.7L] We may have a contaminated system in this vehicle from multiple compressor failures.(front system only) We HAVE been fairly successful with our present system, but may consider an alternative. We have been using the press...
Dash control module
05/16/2025 in the HVAC Forum
[HVAC: 12 Ram 1500 SLT 5.7L] We may need a dash control/module for this vehicle. It is the 3 knob control in the dash panel.-[...] is the OEM number that is obsolete. Does anyone rebuild these or offer reman units? Thanks!
hyundai a/c inop
05/13/2025 in the HVAC Forum
[HVAC: 15 Hyundai Sonata SE 2.4L] Pardon my ignorance, please. I am not very familiar with the non magnetic clutch style of a/c compressors. This car is new to the customer so i have no background. It was low on refrigerant, so I did a full evac and rech...
Update For Meet Koura 444A! Klea EdgeTM 444A
05/07/2025 in the HVAC Forum
Update For Meet Koura® 444A! Klea® EdgeTM 444A Before delving into the latest information, the very first thing is to understand that the USA EPA currently has the following . . ., in writing . . ., on the USA EPA website, and in the USA EPA inf...
1234yf Hydrogen Leak Detector
04/18/2025 in the HVAC Forum
I'm ready to equip with Nitrogen 95 / Hydrogen 5 leak detection. , Any experiences with the following detectors ? Vulkan Loktracer TLD500, Robinair LD9 VW VAS 523003A Thanks Greatly & have a Blessed Easter !

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