safely CLEANING an air-conditioning condenser 

Just go strait pressure washer at this point lol

Can either of you elaborate for those of us whom are novice?

The fins are made of aluminum like tin foil just slightly stronger yet still very fragile. The water pressure has to be minimal and absolutely no wire brush. Unless you’re attempting to straighten the fins out then safely do so but otherwise it’s a no no

*Yes use a Wire brush wheel with a Drill and push hard!*

I dont see why not its literally getting more air flow from not being blocked anymore

Cooler, yes