Heat Pump Savings: 20,000 kWh Load, COP 4, $0.18/kWh
Calculate annual heat pump savings for a large home with 20,000 kWh heating load, COP 4, and electricity at $0.18/kWh.
How to use this tool
- Estimate your annual heating load in kWh of delivered heat.
- Enter the heat pump's seasonal COP (typically 2.5–4).
- Enter your electricity rate in dollars per kWh.
- Read the heat pump and resistance-heating annual costs.
- Compare the annual savings to size up the switch.
See the potential annual savings from a high-efficiency heat pump (COP 4) in a large home using 20,000 kWh of heat per year.
Frequently asked questions
- What is a good heat pump COP?
- Modern air-source heat pumps run a seasonal COP of about 2.5–4 in mild and moderate climates. Cold-climate models hold COPs above 2 even in freezing weather. Ground-source (geothermal) units reach 3.5–5.
- How do I estimate my heating load in kWh?
- If you currently heat with electric resistance, your winter electricity used for heat is already in kWh. For other fuels, convert annual heating fuel use to kWh of delivered heat (1 therm of gas at 90% efficiency ≈ 26 kWh of heat).
- Does cold weather hurt heat pump savings?
- Yes. COP drops as outdoor temperature falls, and many systems use backup resistance heat in extreme cold. Use a seasonal-average COP rather than the rated maximum for a realistic savings estimate.