Heat Pump Thermostats Heat pump thermostats control the reversing valve (O/B) on the heat pump, using the compressor for heating and air conditioning. Because heat pumps control both heating and cooling, a heat pump thermostat is necessary for reversing the valve to the correct direction flow of refrigerant.

  You can save money on your heating and cooling bills by simply resetting your thermostat when you are asleep or away from home. You can do this automatically without sacrificing comfort by installing an automatic setback or programmable thermostat.   Using a programmable thermostat, you can adjust the times you turn on the heating or air-conditioning according to a pre-set schedule. Programmable thermostats can store and repeat multiple daily settings (six or more temperature settings a day) that you can manually override without affecting the rest of the daily or weekly program.   Thermostat Operation You can save as much as 10% a year on heating and cooling by simply turning your thermostat back 7°-10°F for 8 hours a day from its normal setting. The percentage of savings from setback is greater for buildings in milder climates than for those in more severe climates.    The smaller the difference between the indoor and outdoor temperatures, the lower...