How This Calculator Works
Heat Pump Cost turns the inputs into a visible formula-based estimate. Use the result as a planning check, then compare a lower, expected, and higher scenario when the input values are uncertain.
Use the heat pump running cost calculator to estimate electricity cost for heating or cooling using load, COP, hours, and your own kWh rate.
The calculator divides heating or cooling load by COP to estimate electric input, then multiplies by runtime and electricity rate.
Formula
Cost = load kW / COP x hours per day x days x electricity rate.
Example Calculation
An 8 kW load at COP 3.2 uses 2.5 kW electric input. At 6 hours/day for 30 days and $0.18/kWh, cost is $81.
When to Use This Calculator
- Estimate heating cost
- Compare COP assumptions
- Plan seasonal energy budgets
Practical Scenarios
- Use the calculator before a decision depends on the number, then write down the inputs that would be easiest to verify. Use case: Estimate heating cost.
- Rerun the estimate when the most uncertain input changes, so the result shows a useful range instead of one brittle answer. Start with Heat Pump Cost, then compare the changed result with the original.
- Use the related calculators when the result affects a wider cost, schedule, or planning workflow. This is especially useful when you need to plan seasonal energy budgets.
Tips
- COP changes with outdoor temperature
- Defrost cycles can add usage
- Use real load estimates when possible
Common Mistakes
- Treating rated capacity as constant load
- Ignoring COP changes
- Comparing heat pumps without local rates
- Using one unusually good input as if it were the normal case.
- Mixing units, time periods, or assumptions from different scenarios.
Assumptions and Limitations
The Heat Pump Running Cost Calculator is most useful when every input belongs to the same real-world scenario, unit, and time period. Review the formula, assumptions, and related calculators before using the result in a decision.
- Local rules, fees, availability, timing, and real-world conditions can change the result.
- The result is an estimate and should be checked before making an important decision.
- Use realistic low, expected, and high scenarios when uncertainty matters.
Heat Pump Cost uses heat pump cost, heat pump running cost, COP and heating cost as the main context for the formula, example, and assumptions.
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