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How much will it cost to keep cool in the heatwave?

Written by: Emma Lunn
The mercury could hit 37°C this week with experts predicting that some parts of the South East could see the UK’s hottest ever night.

On Thursday, temperatures in eastern England could surpass the all-time record of 38.5°C set in Faversham, Kent in August 2003.

Unfortunately, using an air conditioning unit and electric fan to keep cool comes at a cost – auto-switching company WeFlip has crunched the numbers to reveal exactly how much.

Taking a standard 3KW home air conditioning unit, the cost per hour is about 42p. So keeping the air conditioning running for 12 hours overnight would cost £5.

If the heatwave is here to stay for a whole month, keeping cool for 12 hours a night would cost £153.

But if you don’t have the cash to splash on an air conditioning unit – or your local DIY store has run out – you could save money by opting for an electric fan instead.

WeFlip took a typical 50KW fan and multiplied it by the average price of a unit of energy in the UK (13p), then multiplied that by 12 hours to conclude that an electric fan will cost about 78p a night to run. If the heatwave lasts a week, this would add £5.46 on to your weekly energy bill.

If you’re considering going the whole hog and having a swimming pool installed at home, it’s worth considering how much pools cost to run. WeFlip calculated that the average heated outdoor swimming pool costs £10 to £15 per day to run – about £90 per week.

A WeFlip spokesperson, said: “Us Brits spend half the year moaning about the lack of sunshine, but when a heatwave like this comes along it leaves us desperate for some cool air.

“The stats reveal that the dash for air conditioning and electric fans comes at a cost though, so we’re warning customers to not expect a cool period on their bills when the sun is shining. It’s not just winter when energy costs more.”

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