Equipment Energy Use & Operating Cost Calculator

Multiply average power by run time to get energy, then by your rate for cost.

HVAC Pro calculator — inputs, formula and example are open to everyone.

Result

Results for this calculator are part of HVAC Pro

You can see the inputs, formula and worked example. Unlock results for every Pro calculator.

Unlock with HVAC Pro

Already a member? Sign in

Formula

kWh = kW × hours/day × days
Cost = kWh × rate

Example calculation

A 3.5 kW condenser running 8 h/day for 90 days uses 2,520 kWh; at $0.13/kWh that's $327.60.

Practical HVAC use

Compare equipment, estimate seasonal cost, or explain bills to customers.

Common mistakes

Using nameplate maximum current instead of measured average draw.

Related calculators

Heat Pump Cost

Pro

Compare heat pump heating cost against electric resistance heat using seasonal heat demand, average COP and your electricity rate.

COP ↔ EER ↔ kW/ton

Pro

Convert between COP, EER and kW per ton for air conditioners, heat pumps and chillers, with notes on SEER/SEER2.

Educational tool. Results are estimates from the stated formulas; always confirm with manufacturer data and the code adopted in your jurisdiction. All calculators