Home Efficiency Calculator

Measuring Your Home’s Heating Efficiency

Several issues affect how much energy your home uses to heat, including how leaky the building is, the amount of insulation it has, the efficiency of the heating system, and the actions you take to conserve energy (turning down thermostats, closing storm windows, etc. – see Energy Saving Tips).

You can quickly determine the relative combined efficiency of all these by comparing the square footage of a home’s heated floor space with how much energy you use to heat your home (in British Thermal Units – BTUs) in three simple steps: