Heat Pump Payback Calculator
Enter your current heating bill, the heat pump's efficiency rating, your electricity rate, and the install cost. You'll see how many years until it pays for itself, how much you save each year, and how much CO2 you'll cut. Nothing uploaded.
Break-Even
Time until the heat pump has paid for itself through energy savings
Annual Summary
Running Cost Comparison
15-Year Cumulative Savings
Heat Pump Economics and Efficiency
How Break-Even Years Work
Break-even is the point where your cumulative heat pump savings equal the net install cost (after incentives). For example, if your net cost is $6,000 and you save $1,500 per year, you break even in 4 years. After that, every dollar saved goes into pure profit.
COP and Heating Efficiency
COP is the efficiency ratio: higher COP means lower electricity consumption for the same heat. A gas furnace is around 0.8 COP (loses 20% as waste); a modern air-source heat pump is 3.0 COP (3x more efficient than electric resistance). Ground-source heat pumps reach 4.0-5.0 COP because ground temperature is stable year-round.
FAQ
What does COP mean and why does it matter?
COP (Coefficient of Performance) tells you how many units of heat a pump produces per unit of electricity. A COP of 3.0 means you get 3 kWh of heat for every 1 kWh of electricity, making it far more efficient than electric resistance heating. Higher COP means lower running costs and faster payback.
How do government incentives affect my payback?
The US Inflation Reduction Act provides a 30% tax credit on heat pump costs, capped at $2,000 per year. This reduces your net install cost, which directly shortens your break-even period. Many states offer additional rebates on top of the federal credit, so check your state's energy office for the full incentive available.
Can I use this for a heat pump that only heats part of my home?
Yes. If you're installing a mini-split or zone system, enter just the consumption for the space being heated, or estimate it as a fraction of your total heating bill. The calculator will show you payback for that zone specifically, not your whole house.