Engineering Calculator

Fan Power Consumption Calculator

Traditional, smart and BLDC fan monthly electricity bill with correct saving logic.

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Fan Load Check

See monthly units, bill impact and BLDC payback without false savings.

Live calculator

Input Details

Fill what you know. If a value is unknown, keep the practical default and verify the nameplate later.

Number of Fans

Fan Type

Hours Per Day

Days Per Month

Electricity Rate (â‚¹/kWh)

How to use this result

Use the result to decide whether your current fan usage is worth upgrading. The tool shows consumption, monthly cost, and realistic BLDC payback only when an upgrade makes sense.

This is a preliminary planning estimate. For certified audits, use site measurement and nameplate readings.

FAQ

Why did BLDC saving become zero earlier?

That was a logic bug. Saving must compare current selected fan wattage with BLDC wattage, not fixed 60W with itself.

Is 60W exact for every fan?

No. It is a practical default. Nameplate wattage gives more accurate result.

When to upgrade fans

If fans run more than 8 hours per day, BLDC upgrade usually becomes more interesting. If usage is low, maintenance and runtime control may be enough.

Accuracy note

The result is a planning estimate. Use nameplate wattage, measured runtime and current tariff for professional-level accuracy.