Tools & Calculators

Understand how you use energy with our tools and calculators.

Compare the costs of heating your home with four different energy sources.

Compare heating costs for your home – natural gas, oil, propane and electric heat.

Calculate your savings: compare the fuel costs of high-efficiency and standard efficiency heating systems.

Calculate your savings: compare the fuel costs of high-efficiency and standard efficiency water heaters.

See how upgrading to an energy-efficient heat pump can save you money.

Estimate the energy costs of operating virtually any appliance in your home.

Compare energy costs of different TVs – plasma, LCD, DLP and tube.

Discover how compact fluorescent lamps (CFLs) can save you money.

Estimate how much you can save by adjusting your thermostat.