Gas baseline
One therm contains 100,000 BTU. The estimated heat delivered to the home equals heating therms multiplied by furnace AFUE. Gas cost is therms multiplied by your price per therm.
HEAT PUMP VS FURNACE COST CALCULATOR
Heat pump vs gas furnace running cost calculator
Use your heating gas use and local energy prices to compare estimated annual running costs for the same amount of heat.
ESTIMATED ANNUAL RUNNING COST
Gas furnace$900
Heat pump$957
At the entered prices and efficiencyHeat pump costs $57 more per yearHeat pump electricity: about 5,627 kWh/year
This compares space-heating energy only. It excludes installation, maintenance, cooling, backup heat, demand charges and fixed utility fees. Seasonal COP varies with climate, equipment and operating temperatures.
The same delivered heat, two fuel bills
Heat-pump estimate
The heat pump is asked to deliver that same heat. Electricity use equals delivered BTU divided by 3,412 BTU per kWh and the seasonal COP you enter.
Before making a purchase
Get a whole-home load calculation and local quote. Cold-weather performance, backup heat, ductwork and tariffs can materially change the result.