Find out how much energy a fan running all night actually uses, how it compares to air conditioning, and practical tips to help you save on your summer electricity bill.

Staying Cool at Night—But at What Cost?

During hot and humid summer nights, many people leave a fan on while sleeping to stay comfortable. But how much energy does it really consume when left on for hours? And more importantly, how much does it add to your electricity bill?

How Many Watts Does a Fan Use Over 8 Hours?

Energy consumption depends on the power of the device, which varies by type and model. On average:

Table fan: 40–50 watts
Pedestal (standing) fan: Up to 75 watts
Ceiling fan: 60–80 watts
Tower fan (modern design): Around 45–60 watts

Let’s take a 50-watt fan running for 8 hours as a reference:

50 W × 8 hours = 400 Wh = 0.4 kWh

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