Quote Originally Posted by Jon Wehrenberg View Post
Short answer....no.
What he said. We have had 3 roof airs on a 35' coach, and they were sufficient for that length, but we had to run all 3 (to keep the bedroom, kitchen, and bathroom cool and the ammonia cycle refrigerator happy), and that required the generator (no inverter/s). We have had 1 fail on one occasion, and 2 fail on another occasion. In those cases, of course, running or parked, 3 roof airs are insufficient. OTR will cool a heat soaked coach (over 110 outside) in relatively short order, and then seem to loaf. In those conditions, parked, do not consider any roof air (or cruise-air, for that matter) coach with less than four units. Or you will regret it, in my opinion, for my 2 cents.