What is the best set-point for my thermostat? Temperature set points in the home are clearly a matter of personal preference. We do recommend that homeowners leave their thermostats at one setting and avoid turning the system on and off. This will allow your system to keep comfort levels even

Heating engineers who wanted a way to relate each day’s temperatures to the demand for fuel to heat buildings developed the concept of heating degree days. To calculate the heating degree days for a particular day, find the day’s average temperature by adding the day’s high and low temperatures and