Posted 2/28/2014 10:08 (#3722405 - in reply to #3721085) Subject: RE: Geothermal heat pump
Watch your thermostat, if it's like mine, it says "Aux Ht" in the corner when the electric backup is on. On mine, this only comes on when it's really cold and windy. If yours is on a lot of the time, there's something wrong with your geo system and you are using electric power all the time.