Ceiling-fan electricity cost calculator

Calculate what one or several ceiling fans cost to run per hour, month, cooling season, and year.

Live calculation

Run your scenario.

Fans are relatively stable loads, which makes wattage and runtime a useful planning model. Quantity matters when several rooms use fans simultaneously.

Your reading

Planning estimate · based on your inputs

Estimated monthly cost$3.55

Likely planning range $3.19–$3.90

Per day$0.12

Per active hour$0.01

Per year$42.59

Energy / month19.7 kWh

FormulakW × runtime × tariff

Month52 weeks ÷ 12

Data qualitySelf-entered estimate

Transparent method

The calculation

Fan cost = fan watts ÷ 1,000 × hours × quantity × tariff

Fans are relatively stable loads, which makes wattage and runtime a useful planning model. Quantity matters when several rooms use fans simultaneously.

Read the full methodology →

Sensitivity check

Run three scenarios.

Night useModel bedroom runtime only.

All-day warm weatherIncrease runtime during the cooling season.

Multiple roomsUse quantity to model simultaneous fans.

Use the result well

What can change the answer?

Speed setting changes actual draw.
Efficient DC-motor fans may use much less than older AC-motor models.
Fans cool people, not empty rooms.

Ceiling-fan electricity cost calculator

Run your scenario.

The calculation

Run three scenarios.

What can change the answer?

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