As temperatures continue to soar, you're probably on the look out for any form of heat relief you can get.
One of the best ways to keep cool is to switch on a fan, and for many it's the only way to ensure a comfortable night of sleep, but is it costing you lots of money to do that?
With an increase in fans being purchased - and many major retailers selling out - it seems a good time to ask that question.
Experts from This Is Money say the answer to this depends on several factors - the kind of fan you have and the amount of energy it uses.
The total cost will also depend on the amount of hours you use the fan for and the type of energy plan you have, as energy tariff prices vary.
From estimations, they were able to work out that the average cost of running a fan for 12 hours a night would be between 5p and 14p in total.
Fans with the lower wattage would cost an average of £0.004 per hour, while those at the higher end would be £0.012 per hour.
So if you slept with the fan on every night for a week, with it on for 12 hours a night, it would only add a maximum of £1 to your electricity bill.
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Those who have a smart meter will be able to see exactly how much energy they are using, by taking a reading when the fan is on and comparing it to when it is off.
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