How do I clean rooftop ac unit?

[Chasmorgan]

I need to clean the unit on top and need suggestions on procedure and cleaning products. Thanks for your help!

[Mike Leary]

That looks like a Dometic roof air. If it's not too dirty, you can use any household cleaner with a long handled brush. In my experience, by the time I've put it off for so long, the brush method does not get it. Two sturdy ladders with rags wrapped to avoid scratching the coach are used, the cowl comes off easy and can be cleaned down below.