Air. Air/water machines?

[APW]

Does anyone have either and do they get much use?

 

[MEP001]

Judge whether you need one on where the nearest convenience store is that has one.

 

[Earl Weiss]

I have air machines. "Much use" is a function of traffic. You don't need a heck of a lot for a reasoneable ROI that requires little labor / maintenance.

 

[carwashireland]

Ours typically earn more revenue than a self serve bay. Just make sure you have retractable hoses. It is also a good idea to have and screen wash instead of water. Its a great way to earn money from the water side.