A fair heating comparison starts with the same useful heat demand. Enter that demand, the heat pump's expected coefficient of performance and the comparison heater efficiency. The calculator shows electrical input for each option and the difference. COP varies with outdoor temperature, system design and flow temperature, so the example is a learning value—not a product promise.
Use the current bill or tariff sheet, exact product label, location-specific solar estimate, or measured project dimensions. Example physical values teach the tool; zero money rates prevent an unsourced price from becoming a default claim.
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Every input includes a simple explanation.
Private: calculations run in your browser; a saved scenario stays on this device.
Seasonal performance can differ from a single COP. Defrosting, backup heat, distribution losses and building heat demand require project-specific assessment.
For 1,000 kWh of useful heat, COP 3 implies about 333 kWh of heat-pump electricity versus 1,000 kWh for ideal resistance heat.
Source links establish context or measurement relationships. Your personal rate and project values remain your inputs.
U.S. Department of Energy
Explains heat-pump operation; the calculator's COP remains user-entered.
Open official resourceNatural Resources Canada
Federal home-energy guidance and programmes.
Open official resourceEuropean Commission
EU building-energy policy context; national implementation must be checked.
Open official resourceEnergy Efficiency and Conservation Authority
Independent upgrade-planning resource.
Open official resourceCompare heat-pump and resistance-heater electricity using the same useful heat demand.
Turn the annual kWh on an official appliance label into annual and multi-year energy cost
Open calculator Working shownEnergy bills & appliancesEffective Electricity Bill Rate CalculatorSeparate fixed charges from energy charges and calculate both all-in and usage-only bill rates
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