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RECORD HEATWAVE: How much is your fan costing you?

Patrick Christys
Jul 26, 2019


Record temperatures have scorched Britain, leaving countless people unable to sleep, despite having a fan on full blast next to the bed.

But how much is having that fan on actually costing you each night? 

We're absolutely useless when it comes to weather in Britain. If we get half an inch of snow then the schools close, motorways are jammed and trains don't run.

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When it rains a lot, we flood. And when it doesn't rain enough we have hosepipe bans.

And, when temperatures reach record highs, as they did this week when The Met Office revealed it had received a reading of 38.7C from its Cambridge University Botanic Garden, our homes get unbearably hot.

So, en masse, we all wheel the fan out from the cupboard under the stairs or wherever we stuffed it at the end of last summer, and crank it up all night.

But this could end up with you fainting when you receive your next energy bill.

Once you find out how much it's costing you to stay cool in bed, you might decide it's better to just sweat it out!

Here's the formula for to work out the price of your comfort each night - just read it twice, it's not as complicated as it seems...

HOW TO WORK OUT THE COST OF YOUR FAN:

- Check the wattage of your fan.

- Translate the wattage into kilowatt-hours: Divide the wattage by 1000, which determines how much output is used per hour.

- So if your fan is 80 watts output, divide 80 by 1000 to get 0.08.

- That number represents the amount of kilowatts you're using every hour.

- To work out the cost of this, you will need to know how much you pay for 1kw of electricity - this will be written on your bill.

- So if 1kw is 14p on your bill, the equation will be 0.8kw x 14 = 11.2p.

- The sum is: Cost = power (kilowatt) × time (hour) × cost of 1 kWh (pence).

BUT DO FANS ACTUALLY MAKE A ROOM COOLER?
In a word; NO!
Fans cool YOU down, not the room - they lower body temperature, which can help you get a better night's sleep, but they don't make the room any cooler.
WHAT'S THE BEST ROOM TEMPERATURE FOR SLEEP?
According to TuckSleep, the best temperature for sleeping in is between 15 - 19C.

This is a bit higher for toddlers and babies, at around 18-21C.

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