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As temperatures rise, a simple trick with your fan can help to better dissipate the heat accumulated in your home. However, it’s essential to use it at the right time to fully benefit from its effectiveness.
It’s often thought that a fan must be directed towards you to be effective. Yet, some people place it facing an open window, with the blades pointing outwards. This habit might seem strange at first, but it’s based on a very simple principle. When temperatures soar and the air becomes unbearable indoors, this method could well change the way you use your fan. However, you need to know when to use it to reap all the benefits.
Fan facing the window: a simple trick to get rid of hot air
In fact, a fan doesn’t produce coolness. Its role is simply to move the air. When the indoor air is already very hot, the device merely moves it from one place to another.
However, when directed outwards through an open window, its function changes. It then acts as an air extractor, pushing hot air out of the home. This exhaust promotes the intake of fresher air from another opening, thus creating a particularly effective air renewal system.
Why this technique can improve air circulation
Behind this trick lies a well-known physical principle. By expelling air outside, the fan creates a slight pressure difference that encourages a new volume of air to enter the home.
This phenomenon allows for what is known as cross ventilation . Even in an apartment that is not a through-unit, it is possible to achieve this result through a half-open door, another window, or even a skylight in an adjacent room.
The goal is therefore no longer just to create a feeling of freshness on the skin, but to renew the air inside in order to remove the heat accumulated throughout the day.