Air Powered Door Openers in Cold Climates

[Rainway]

For folks in cold climates with air powered doors, what are you finding works best to keep moisture out of the air and causing problems with the doors freezing? A multi stage air drying system or a de-icer system or both?

Thanks

 

[Strava]

I'm curious as to the advantages of air-powered over electric.

 

[HeyVern]

I have a refrigerated dryer on my compressor, I've never seen a drop of water in the water traps.

 

[washnvac]

Refrigerated air dryer, plus all lines are in heated trough. Then the bays are heated.