🌀 Quick: pick your fan type
then set your hours below ↓
🌀 Fan Cost

Ceiling Fan Electricity Cost Calculator

See how many units your fan uses and what it costs per day, month and year — and how much a BLDC fan would save.

🌀 A small load that adds up. One fan is cheap, but 3–4 fans running 12+ hours all summer is real money — and switching to BLDC fans can halve that part of your bill.
Regular ~75, BLDC ~30 W
📊 Your Fan Running Cost
Units per Day
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Cost per Day
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Units per Month
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Cost per Year
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📅 Monthly Electricity Cost
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💡 BLDC saving: —
Formula: Units/day = Power (kW) × Fans × Hours  |  Cost = Units × Tariff (₹/unit)

How This Calculator Works

A ceiling fan draws steady power, so its consumption is simply its wattage times the hours it runs, times the number of fans.

The big lever is fan technology: a BLDC fan uses about half the watts of a conventional induction-motor fan for the same airflow.

💰 Related Calculators

🌬️ Air Cooler Electricity Cost ❄️ AC Electricity Cost 🧊 Refrigerator Cost 🧾 Electricity Bill Calculator

💡 Run Fans for Less

  • → Replace old fans with BLDC (~30 W)
  • → Use an electronic regulator, not resistive
  • → Switch off in empty rooms
  • → Clean blades — dust slows airflow
  • → Pair a fan with AC to set a higher AC temp

How Ceiling Fan Electricity Use Is Calculated

A ceiling fan runs at a near-constant power, so unlike an AC or fridge there is no cycling to account for. Multiply the fan's wattage by the hours it runs to get the units, then by your tariff for the cost. The only big variable is the motor type — BLDC versus a conventional induction motor.

Units per Day = Power (kW) × Number of Fans × Hours Cost per Day (₹) = Units per Day × Tariff (₹/unit) Cost per Month (₹) = Cost per Day × Days Used Cost per Year (₹) = Cost per Month × 12

Worked Example — regular vs BLDC fan

Regular fan: 75 W = 0.075 kW  |  12 hrs/day  |  30 days  |  ₹8/unit

Units/day = 0.075 × 12 = 0.9 units
Cost/month = 0.9 × 30 × ₹8 = ₹216/month
A 30 W BLDC fan = ₹86/month — saving ₹130/month (₹1,560/year) per fan.

Ceiling Fan Running Cost Reference

Per fan, at 12 hours/day, 30 days, ₹8/unit.

Fan TypePowerUnits/MonthCost/Month
BLDC fan30 W10.8₹86
5-star regular50 W18.0₹144
Table fan55 W19.8₹158
Standard fan75 W27.0₹216
Old fan90 W32.4₹259

* Approximate at full speed. Use the calculator above for your fan count, hours and tariff.

Frequently Asked Questions

A regular fan uses 70–80 W (~0.075 units/hr) on full speed; a BLDC fan uses 28–35 W (~0.03 units/hr). At ₹8/unit that is about ₹0.60/hr for a regular fan and ₹0.24/hr for a BLDC.

A 75 W fan for 12 hours/day at ₹8/unit costs ~₹7.2/day or ₹216/month. A 30 W BLDC fan for the same hours costs ~₹86/month — saving about ₹130/month per fan.

Yes, if it has an electronic or BLDC regulator. Modern electronic regulators draw less at lower speeds. Old resistive (capacitor) regulators waste the difference as heat, so lowering speed barely changes consumption. BLDC fans always scale power with speed.

Usually yes. A BLDC fan uses about half the electricity — saving ₹120–150/month per fan with heavy use. The ₹1,000–2,000 higher price typically pays back in one to two summers, and the fan lasts for years.

A 75 W fan running 12 hours uses ~0.9 units/day; 24 hours uses ~1.8 units. A 30 W BLDC fan uses ~0.36 units in 12 hours. Multiply wattage (in kW) by hours to get units.

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