Sleep expert Martin Seeley has advised against Brits investing in an electric fan READ MORE: Mum shares 'perfect hack' to keep the kids cool this summer You try in vain to keep cool during those long summer nights... but it always ends the same way. Hours of sweltering misery, pleading for slumber to kick in. For those without air conditioning, the humble electric fan can alleviate some of the pain. But your clacking, whooshing salvation comes with its own problems.