This thing is fantastic. Now, to be fair, we went from a portable air conditioner (10,000 BTU) that ported the exhaust air outside to this so it isn't apples to apples but my house now gets cold. Not kind of cool, not comfortable but cold. You can set it not to make you miserable, but I wanted to see what it could do. I couldn't be happier with the purchase. Installation was involved but it wasn't hard at all. Mounted the unit on an exterior wall clad inside in tile. Hit the studs and was off. Poured a concrete pad for the outdoor unit and put it on a 3/4 inch thick rubber pad. It isn't silent, but it is pretty close. Ok, that is a lie, but it is much quieter than I would have suspected. It heats, but I don't know how well yet because it hasn't gotten cold enough to test. I ran it in heating mode and it made the house uncomfortable rather quickly but at the time the outside temperature was 18C so it wasn't the best test. I am gambling that it is going to work out because I didn't buy any firewood this year. Wish me luck.