I've had two basement AC's in a couple of Winnebago Vectras, and love them. Coleman is the mfgr, and I've had no problems with either even though they were older units in 95 and 96 model years. Neither of the one's I've had can be used as heat pumps, but they run quiet and have been very reliable. They have two compressors, one that operates when set to 30 amp, and the second one kicks in when set to 50 amp. So, it's kind of like two AC's in one packkage and set for 30 amp is adequate for most instances. I like them and particularly appreciate the uncluttered roof which aids in cleaning and leaves solar options wide open. It does take up some room that could otherwise be used for basement storage, but as in so many things, that's the trade-off.