This information is great. We have a 1700sf home and I would like to know what the cost of running three dehumidifiers per month. The settings on my ac unit for summer (unoccupied) are thermostat 80 and humidistat 55. Can the temperture go above 80 if the humidity is below 55.hen you are away it dosnt mater what the temp is (70 deg or 90 deg) as long as the humitity is below 70%. It makes no sense to cool your home to 70 deg when you are not home, thats a waste of energy.