What determines the duty cycle of the A/C compressor?

[ka0sx]

the only difference between recirc and fresh is that fresh air draws outside air and cools it. The recirculation is used to make the air even colder as the cooled air is then drawn back in and cooled again, the on times of the compressor are the same on the coldest setting.

however as Yaris Hilton points out if the outlet reaches the set temp it turns the AC off until it needs to cool again, so in turn you probably are wasting just a tad more energy.

The only thing is that you are probably reducing maybe 1/2 mpg running the AC in a car like this so there shouldn't be an argument over something like this. I don't care how much of a tree loving into the green hype hippie someone is. 1/2 mpg is not going to change anything.