A power and cooling engineer has shared the 鈥渃orrect鈥 way to use your fan to ensure a room cools down much faster and more effectively. As the warmer summer weather continues, and looming heatwaves remain on the forecast, many people are eager to find methods of keeping their homes as cool as possible. Most UK homes aren鈥檛 equipped for rising temperatures as they鈥檙e often designed to keep the heat in. Air conditioners still aren鈥檛 a common feature in many homes, so many turn to using a fan and keeping it going all night long in a bid to get some decent sleep in the sweltering heat. Lots of people look to social media on a quest for answers or tips on better methods to reduce the temperature at home. And one woman caused a stir after sharing a tip from her partner, who works as a power and cooling engineer, on TikTok . In the simple six second tip, a fan can be seen in front of an open window. Over the top of the footage, the woman added the words: 鈥淲hen he says if we point the fan out the open window, it will cool the room down quicker and he鈥檚 right鈥. In the caption accompanying the clip – which has racked up more than 162,000 likes so far – the woman simply penned: 鈥淭hat鈥檚 on living with a power and cooling engineer鈥. Hundreds of people shared their thoughts in the comments section. One person said: 鈥淏ernoulli’s principle – fast moving air sucks in even more surrounding air. So pointing it out the window (at a distance) will draw a lot of the air in the room out the window with it鈥. Another joked: 鈥淲hy am I learning more on TikTok than I learned in school?鈥 Someone else shared: 鈥淲e only have AC in the living room, that’s what we do to redirect the cold into the bedrooms. I thought my boyfriend was crazy too when he said it but it works.” Les Roberts, energy expert at Bionic , commented: 鈥淥pening opposite windows or doors allows air to flow through. For even better airflow, you can place a second fan facing inward at the opposite opening to pull cooler outside air into the room, creating a strong cross-breeze. 鈥淧ositioning the fan to face outward pushes the hot indoor air outside, which helps draw cooler air in from the other opening.鈥 Les continued: 鈥淭his method works best when it鈥檚 cooler outside than inside – usually in the evening, overnight, or early morning – as the temperature difference creates a natural flow of air. 鈥淭he temperature gradient enhances the movement of air, allowing the fan to more effectively push hot air out and pull cooler air in, resulting in a more comfortable indoor environment. 鈥淭his approach is energy-efficient and can significantly cool your living space without air conditioning by exchanging hot indoor air for cooler outdoor air through natural ventilation enhanced by fans. It鈥檚 a simple trick that could make a noticeable difference, especially at night, when outdoor temperatures drop.鈥 On the topic of air conditioning, Roberts added: 鈥淥n average, portable air-conditioning units cost around 拢8.40 to run per day, whereas a fan could cost you as little as 71 pence. 鈥淏y utilising a fan to its full advantage with this hack and forfeiting air con, households could save nearly 拢55 a week.鈥