Repairs & renovations

HVAC Operating Cost Calculator

Estimate annual heating and cooling energy cost. Replace every default with figures that apply to your property and location.

What this calculator estimates

Estimate annual heating and cooling energy cost. It combines the inputs below to produce Estimated annual HVAC cost. Every assumption remains editable so the estimate can reflect the property, financing and location being evaluated.

Worked example

Using the displayed sample assumptions, the calculator produces $1,560. This is an illustration, not a market quote. Change one input at a time to understand what drives the result.

Inputs and assumptions

• Equipment input power — sample input: 3.5 kW
• Operating hours per year — sample input: 1800 hours
• Energy price per kWh — sample input: 0.18 currency units
• Seasonal efficiency adjustment — sample input: 90 %
• Annual maintenance — sample input: 300 currency units

How to interpret the result

Replace sample unit prices with current local quotes. Compare a conservative case with an expected case and keep a record of the assumptions used.

Common mistake to avoid

Do not omit demolition, permits, tax, delivery or contingency. Local definitions, taxes, lending practices and measurement requirements can materially change the result.

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Reviewed 2026-09-08.