|
On my truck, like most vehicles, the AC compressor is wired to a pressure switch in the Freon high pressure side. The faster you run the fan, and the hotter or more humid the air, the more the compressor runs.
I run the AC fan on low with the dash vents blowing cold air straight at me. I'll cycle the either the AC or the fan switch off if it gets cool enough. The compressor only runs when the fan is on and the Freon pressure switch is closed. The compressor is off much more than it is on when the fan is on low.
When I run it that way, the gas mileage hit is too small to measure.
|