I've had this for about two months and haven't had the need to use the heat, though I did test it to make sure it works. It works well, is quiet, and looks beautiful. I'm taking off one star because the fan is good if it's not too hot but if it is hot, it doesn't do much. When I saw the unit in the Dyson showroom, it seemed to be blowing cold air, but I think that's because the air conditioning was blasting in the store.