All ActivityMost RecentMost LikesSolutionsRe: 13,500 BTU vs 15,000 BTU second ACThanks DougRainer I was told by my original installer about turning the thermostat back a little. I just thought this ac was built to run and to turn back the temp kinda defeats the purpose of getting it cold inside. But I guess if I have to. So do you think I had a choice regarding the freeze control device? Did I need to ask for that? thanks MarkRe: 13,500 BTU vs 15,000 BTU second ACCould I butt in here for a bit. This topic is exactly my AC problem. And yall seem to know spefics of these ac's. I mean detailed specifics i am impressed and really hoping yall can tell me which way i should go. I am ready to pull my hair out... I have a 1997 33' Airstream Land Yacht motorhome. 30 amp can only run one ac at a time on shore power. But on generator with 30 amp breaker i can run both. Thats not my problem but from what Doug said about not good to run both on 30 amp i might stop. Here is my question/problem. Both are NON DUCTED, I Have 13.5 penquin low profile in back bedroom/bath. Works great. Originally had same thing in front. But with all the windows and front windshield its an oven up there. So I swapped it out for 15k btu low profile. I have had both dometic and currently have coleman mach8 low profile. Both of these new 15k btu's have been lowprofile. These 15k btu's are freezing up at night. Houston and Dallas. Compressor makes aweful noise. Air blowing out cuts to a trickle and its hot air most of the time water drips out, quite a bit(I am guessing this is freezing up). I keep my fan speed on high always. I read either on this thread or another someone was using a dehumidifier ....? I had a rv tech tell me he has swapped out several 1-2 year old low profiles and installed fullsize units specifically because the lowprofiles kept freezing up. What say you experts? Do you have some questions of my setup to help me make a good decision? What unit should I get? Size? Brand name? Model? I am all ears. I need help If you read this far thanks for your time MarkRe: Your Favorite Boondocking PicsTaylor River on BLM land Gunnison National Forest Colorado. Right on River surrounded by Snow capped mountains. Trying to load a couple pictures. Have not figured thatout yet.