This is a Brand New-in-the-Box White Rodgers Digital 5/1/1 Programmable Thermostat with an Energy Star rating. The White Rodgers part # is 1F80-0261. This Themostat is designed to work with Air Condition and Gas/Electric Heat. If you have a Heat Pump then this will only work for you if you live in a climate where you do not need back up heat! If you have a heat pump with back up heat then this will NOT work for you. Thanks for looking and good luck!