Calculators
Heat pump or gas furnace?
Enter your heat demand (or estimate it from the floor area), energy prices and investment. See yearly costs of both, the saving and the payback.
Common questions
What efficiency value should I use?
The seasonal coefficient of performance: how many kWh of heat the heat pump makes from 1 kWh of electricity over the heating season. Cold-climate models hold up better in hard winters; use the figure from the installer for your climate.
Which electricity price should I enter?
Your all-in price per kWh including delivery: divide a winter bill by its kWh. On a time-of-use plan, weight it towards the hours your heat runs.
Is a heat pump worth it instead of a gas furnace?
It depends on your gas and electricity prices and your climate. It usually looks best when the furnace or the AC is due for replacement anyway, because a heat pump heats and cools.
Is there still a federal tax credit?
No. The Energy Efficient Home Improvement Credit (25C) does not apply to property placed in service after December 31, 2025. Some states and utilities still offer rebates, so ask before you get quotes.