Does anyone ever use the temperature control knob in their cars while they have the A/C turned on? I don’t. It seems to me, that it is inefficient to have the A/C (compressor) turned on to cool the air, and then using the temperature control to add heat to the air your compressor just cooled. The only time I ever use the temp control knob is when its cold and I want the heat on, in which case the A/C compressor is turned off and no energy is being wasted.
I’ve seen people who leave their A/C turned on ALL the time and have the temperature control adjusted (towards the red) in order to not have the air come out too cold. I, on the other hand, have a car whose A/C is like ice at the coldest setting. So I leave the temperature control at the coolest (all blue) setting, and when it gets cold I simply turn off the A/C (compressor) and keep it in recycle mode (so that the cold air is recirculated.) Then, after a while, I’ll turn the A/C back on until its thouroughly cooled again. This seems to me to be the most efficient way of doing things, although some may argue that by turning on and off the compressor more often, I am causing it more stress. I say that leaving it on ALL the time would be even more so. Furthermore, this has long since been my MO, and I have definitely had far less (none) problems with my various cars cooling systems compared to my aquaintances. Add to the equation slightly better gas mileage, and I think that makes it downright wasteful to use the temperature control to heat your cooled air.
I know, I’ve said a lot so far without posing any real questions, so here it is:
Why, in this era of high gas prices and hightened concered over energy conservation, don’t car manufacturers put actual thermostat controls in cars air conditioning systems? The way I see it, there HAS to be a good reason to waste all the energy.
If you still don’t get what I mean, think of how your home’s air-conditioning functions as opposed to your car’s air-conditioning.