Naughty Truck's Air Conditioning System Misadventure

Mistakes were made and things were learned. Everything ultimately worked out fine. Naughty Truck is a 2007 Chevrolet Silverado Classic K1500, and is so known as a result of several electrical gremlins.

On hot (90F+) days, the air conditioner has been outputting approximately 45F or slightly cooler air when pulling in fresh air under normal driving conditions. Performance is better in recirculation mode, as you'd expect.

While I don't often endorse anything, the Harbor Freight Tools 3 CFM two stage vacuum pump shown in the video has worked very well for me. I've tested it to pull down as far as 70 microns. I don't know if the model they sell today is the same or not, but here is a link (US only, as far as I know): https://www.harborfreight.com/3-cfm-two-stage-vacuum-pump-61176.html

I believe (but have not exhaustively proven) that the HFT MVAC service port adapters are vacuum tight, or at least that mine still are. On the BBPOJ, I was able to reach a 300 micron vacuum with them and held very near to that in a decay test.

Vacuum pumps having greater air flow (CFM) can get the job done faster and you might want one for evacuating larger refrigeration systems. That said, I've used the HFT pump for residential HVAC work as well, and been quite happy with it. I don't see the need to spend a whole lot of money on fancy yellow cased pumps that seem to be quite popular.

Procedures shown in this video should only be attempted by trained/professional HVAC/MVAC technicians with the proper licenses. If you attempt anything shown in this video, you're doing so entirely at your own risk and bearing all responsibility for the results whether good or bad. I'm not responsible for the results of your actions.

I hold both the EPA 608 Universal and 609 MVAC certifications. I will readily admit that my approach and the equipment used are a mix between approaches and devices used for HVAC and MVAC.

Видео Naughty Truck's Air Conditioning System Misadventure канала uxwbill