Keeping cool
What fans and portable air conditioners cost to run, which to buy, and how to keep a home and a bedroom cool in a UK heatwave.
Running costs use the current price cap of 26.32p per kWh. In a heatwave, check the NHS advice on coping in hot weather, especially for babies, older people and anyone with a long-term health condition.
Running costs
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Fan and portable air conditioner running costs
What fans, portable air conditioners and evaporative coolers cost per hour and per summer month at the current price cap.
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Appliance running cost calculator
Find out what any electric appliance costs per hour, day, month and winter at the current UK price cap.
Buying guides
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Portable air conditioner vs fan: which do you need?What fans and portable air conditioners each do, what they cost to run, and which suits a UK home.
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Best fan for a bedroomWhich fans are quiet enough to sleep with, cheapest to run overnight, and right for the size of your room.
Staying cool
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How to keep a bedroom cool in a heatwaveWhen to open and close windows, how to use a fan properly, and what helps you sleep when the night stays hot.
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Do evaporative air coolers work in the UK?How air coolers work, why they struggle in humid weather, and when a fan or air conditioner is the better buy.