I highly suggest if you purchase this unit get the extended 3 year warranty. For me a year later the cooling is no longer working. I regret not getting a extended warranty and I regret my purchase. my room at ambient temperatures of 72ﾟ year around I had the unit set at 【66] I had it plugged into a surge protector so all said and done this product is not worth it $499 price for just 14 months..