Where is the best place to order a new a/c for a trailer? Mine is a simple a/c and heater combo, not ducted or anything fancy just enough for a 10' short wall. I believe my husband can change it out himself (he's one of those handy can literally do anything type of man). I just don't know what website(s) i can actually trust. 

Camping world or RV Parts online. 

etrailer.com