I have a Lennox heat pump. My builder was required to put one in per our neighborhood association. However, he set the thermostat so that it would never kick on because he thought I would like the hotter air provided by the gas furnace. I was thinking with the price of gas on the rise the heat pump may be worth a try. It looks like the thermostat is set on 30 degrees when I take the cover off on the outside unit. What should the thermostat be set at for the winter? Is there anything else I should know or need to do before using the heat pump?