Sam Gorman

Compare gas and electric water heater costs with your hot water use, utility prices, installed costs, and comparison years.

Compare heat pump and electric resistance heating costs, annual savings, kWh use, and simple payback after rebates.

Compare oil gallons, oil price, AFUE, electricity price, HSPF2, installed cost, and incentives to estimate heat pump payback.

Compare yearly heat pump and propane heating costs from propane gallons, AFUE, fuel prices, electric rate, and COP.

Estimate the outdoor temperature where backup heat becomes cheaper using electricity price, fuel price, AFUE, and COP.

Estimate AFUE heating bill savings, payback time, breakeven year, and 15-year net savings after extra installed cost.

Estimate HPWH yearly savings, payback time, and net savings using your fuel type, rates, household size, and project cost.

Estimate AC cooling bill savings, kWh savings, percent savings, payback time, and net savings after rebates.