Air Conditioner Running Cost Calculator
Enter your AC details to see the running cost.
Result
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
An air conditioner's efficiency is rated by its EER (Energy Efficiency Ratio) — BTU of cooling output divided by watts of electricity consumed. This calculator divides your AC's BTU capacity by its EER to get power draw in watts, converts that to kilowatt-hours over your chosen run time, and multiplies by your electricity price to estimate cost per hour, per day, and across a full cooling season.
A higher EER (or the related SEER rating for whole seasons) means the same cooling output for less electricity — a unit with EER 12 uses roughly 20% less power than one rated EER 10 for identical BTU output, which compounds into real savings over a summer of daily use. Homeowners comparing AC units before purchase, renters budgeting summer utility bills, and HVAC contractors use this calculator to translate a nameplate BTU/EER rating and local electricity rate into a concrete dollar figure.
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