I bought an older home with just an evaporative cooler in Arizona. I figured I could live with just the evap for a year or two while saving up for a whole house AC. Nope, record heat and my family and I were miserable. I don't like the look of window AC's so I wanted a portable unit. This amazing unit keeps the main part of my house nice and cool! While it's 108 outside, this has brought the inside temp down to 75. It has been a lifesaver! I love that it also dehumidifies, which if you've ever lived with an evap cooler you know it makes your house feel wet. It does a great job at reducing moisture levels. I can't wait to try out the heat function since my 1950's furnace gave up the ghost last winter. I really think this unit is the most versatile thing I've ever bought and I'm completely in love with it!