Heat Pump Balance Point Calculator
At what temperature does a heat pump become inefficient?
A standard air-source heat pump loses capacity and COP steadily as it gets colder, and it becomes markedly less efficient once the outdoor temperature drops below its balance point — typically 25–40°F — because auxiliary electric-resistance heat (COP of 1.0) starts filling the gap. Cold-climate variable-speed units hold efficiency much lower, often near 0°F. The balance-point calculator pinpoints where your specific unit crosses over.
Run the numbers for your project
Use the Heat Pump Balance Point Calculator to get an exact answer for your inputs.
Open the calculatorRelated questions
- What is a heat pump balance point?
- At what temperature does a heat pump stop working?
- How do I lower my heat pump balance point?
- Minimum outdoor operating temperature for a heat pump
- Do heat pumps work below freezing?
- How do I find the balance point of a heat pump?
- What is the thermal balance point temperature formula?
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