I never knew a heating/cooling system could be so terrible. I am moving because of this. When it's below 35 outside, the unit does not heat. There are too many settings and buttons on the remote. The remote is not illuminated so you have to turn on a light to adjust anything in the night. It takes about 2 hours to warm the house up, then it's too hot. I've never had to adjust a heating/cooling system this much in my life. In the summer, two of my units leaked water, one pouring out. A service, which was a cleaning and a vacuuming out of the lines ran me $300. My winter bills are outrageous. Sometimes the unit will not blow anything for 10 minutes while it 'thinks' so you're sitting in a freezing or hot house while this system figures out what it needs to do. I've come home in the summer with my house terribly hot, with my animals panting, putting my pets in danger of heat exhaustion. I can't leave on a trip and trust that the pet sitter will know how to work it or that the unit will actually keep the house at the right temperature. One last thing, it dehydrated the heck out of you. I had to buy a humidifier because I was getting so terribly dehydrated from this machine. What a total piece of crap. Would probably work good for an added on room or workshop but not for your main source of air. I want to bash it to pieces.