I recently had maintenance done on my unit, and the freon was low. It was suggested to put in 1.5 lbs., the technician then checked his records from last years visit and saw 2 lbs were put in. So, he decided to put in 2 lbs. after his current observation found 1.5 lbs. would be sufficient. That cost me an additional $30.00! I feel he took advantage of my wife. In addition, he did not clean the unit outside. If I remember correctly, part of the maintenance last year included the "fins" on the unit to be cleaned. I will not be using them again.