Verify the inputs
Measure or document each input. If a value is only an estimate, record its source and test a conservative alternative.
Heating/ CALCULATOR
Heat-pump design-load coverage
Compare building heat loss with heat-pump and auxiliary capacity at the same outdoor design condition.
FROM ESTIMATE TO ACTION
Use the result, not just the number.
Keep the calculation traceable
Save the input link or copied result together with the date, units and assumptions. A number without its inputs cannot be checked later.
Confirm the decision
Compare the estimate with the related guide, current product data and requirements that apply at your location before buying or building.
Inputs to verify
- Building design heat loss (kW)
- Use a load calculated at the local heating design temperature.
- Heat-pump capacity at design temperature (kW)
- Use performance data at the same outdoor condition.
- Available auxiliary heat (kW)
- Capacity controls can safely make available when the heat pump is short.