How to clean the dirty exterior of AC unit

[shockfly]

First it’s hard to reach to, so lack of cleaning for years. Wonder is there still a way to make it back. Thanks!

[CRH]

I stand on an ladder and use a pressure washer. Another option is to use the ladder to get in the trailer, take the cover off and wash it on the ground

[Tim A.]

I also use a pressure washer and ladder.

I just replaced ours. The old one was cracked and shattered like glass when I dropped it on the ground from the trailer's roof, so it was time for replacement. In our case, I am sure sun and heat made the plastic brittle.

Tim