Heating & Cooling Calculators

Compare heat pumps to gas furnaces and find the payback for upgrading your HVAC.

Compare heat pump vs gas or oil heating costs and find the payback period.

Compare electric tank, heat pump, gas, and tankless water heater costs.

Size your heat pump correctly by home size, climate, and insulation quality.

Size a solar water heating system and calculate savings vs electric or gas.

Not sure which calculator you need?

Start with the Energy Audit to see where your electricity actually goes.