Can a car be idled with the AC on?
Can a car be idled with the AC on? But setting my environmental preferences aside, you can let any car idle with the AC on for a long time without doing any harm. As long as the cooling system is working properly, you should be able to sit in any modern car you buy and let it idle indefinitely. Or at least until you run out of gas. Why does the AC blow warm air while idling? During idling however, the AC starts blowing warm air and it gets warmer and warmer the longer the car is not in motion....