The cooler had the inside of the house down to 66 degrees this morning. It will be triple digits by this afternoon but when I get home the house will be 70-71 degrees inside. It automatically adjusts blower speed depending on how far indoor temp is from the temp set on the thermostat. About every five or six weeks I have to go outside, shut it down, and snug up the screw holding the pulley on the fan shaft. It will sometimes work loose and start to talk to me. Other than the couple of weeks of high humidity they are pretty easy to live with and a darn sight cheaper than AC.