[Fulltiming]

Max, it depends on the model year. My 1992 only uses air for the suspension, the brakes, one air operated bay slide out tray, the slide out for the generator, the drivers seat, the passenger side waste dump valve and the cover over the stairwell. Within a couple of years, Newell added interior air doors, air operated toilets where the toilet wasn't over the waste tank and the drivers side waste dump valve. Of course when slides were introduced (beginning in 1997 after the single exception of #436 a 1996) air bladders were added for each of them. Later, the exterior air operated Bode door was added (#539 a 2000 was the first Newell with the Bode air operated door that I am aware of).

Unless you are frequently opening and closing the air doors, the compressor should not have to run very often.