W· WattNote

PRICE IS ONLY THE BEGINNING

A used unit may look cheaper.
What will it cost to own?

Compare two quotes with the same assumptions, including installation and electricity.

The starting prices and energy values are fictional examples for explaining the calculation, not live prices or measured product performance.

AUsed / existing unit

Enter zero for the purchase price if you will keep a unit you already own. Do not count costs already included in your quote twice.

Energy, repairs and resale assumptions

Use measured monthly energy or comparable label data. Test conditions may differ. Do not enter watts as kWh. Zero repair or resale amounts mean those costs are excluded.

BNew unit / other option

Enter zero for the purchase price if you will keep a unit you already own. Do not count costs already included in your quote twice.

Energy, repairs and resale assumptions

Use measured monthly energy or comparable label data. Test conditions may differ. Do not enter watts as kWh. Zero repair or resale amounts mean those costs are excluded.

Comparison under your assumptions

Maximum product price for B to have no higher total cost

Installation is separate. All other entered assumptions stay the same.

Cost breakdown
ItemAB

This compares costs only, not cooling capacity, noise, warranty or condition. It is not an electricity bill calculation or a guarantee of suitability.

BEFORE YOU BUY

Five checks before buying a used AC

Compare quotes on the same basis, from installation to warranty.

HOW IT WORKS

What if the energy use is unknown?

Separate what you can compare from what you do not know.

Why is there no single right answer?

Seasonal appliances have different costs from year-round appliances. The variation range is a user-defined scenario, not a statistical confidence interval or measured uncertainty.

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Guides

Air conditioner costs: seasons and installationRefrigerator replacement: compare annual energyDryer costs: start with energy per cycle