I should start off saying that I had the previous model of this AC that lasted me 10 years.  I ran the AC most days of the year and ran it in fan mode every night.  It was truly a workhorse.  I bought this 10,000 BTU vertical unit a few weeks ago.  I have run the AC most days and the fan every evening.  The things I like about this newer model are that I only run it on low, and it easily cools my house to 65 degrees.  My house is 700 square feet.  The thing that I like best, is that I can set a time delay so that the AC comes on  two hours before I get home and the house is always very chilly, which I love.  Hopefully this one too, will last me 10+ years.  Great product!