Fan trick: how to make your home feel cooler in hot weather

On hotter days, many people assume that simply switching on a fan is enough to take the edge off the heat. However, a straightforward tip widely shared by home cooling specialists can make a room feel fresher without increasing electricity use. The method involves placing the fan strategically so it replaces the air in the room, rather than merely circulating warm air indoors.

Why does the fan’s position make such a difference?

When the room is warmer than the air outside, aiming a fan towards an open window can help push built-up hot air outdoors. At the same time, leaving another window open allows cooler air to enter, creating a natural airflow.

Known as cross-ventilation, this approach improves air movement and can make conditions feel more comfortable, particularly overnight or early in the morning, when outdoor temperatures are usually lower.

How can you use this fan trick at home?

This method is easy to follow and requires no extra equipment. Before setting up the fan, simply check the outdoor temperature.

If it is cooler outside than indoors, the technique is likely to work more effectively.

• Open one window to let cooler air in.
• Place the fan near a different window.
• Point the fan out of the house.
• Keep internal doors open to help air circulate.
• Draw the curtains during periods of strong sunshine.
• Use this method mainly at night or in the morning.

What else can make the room feel cooler?

Another well-known suggestion is to place a bowl of ice or frozen water bottles in front of the fan. As air moves across the cold surface, it may briefly increase the feeling of freshness.

It also helps to limit heat entering the home during the day. Keep blinds and curtains closed at windows exposed to direct sunlight, and avoid using appliances that heat the room for extended periods.

• Close curtains during the hottest parts of the day.
• Air the house early in the morning and at night.
• Put frozen bottles in front of the fan.
• Avoid leaving appliances running unnecessarily.
• Maintain airflow between rooms.
• Drink water regularly in hot weather.

Does this fan trick replace air conditioning?

No. A fan does not actually lower a room’s temperature in the way that air conditioning does. Instead, it increases air circulation, encouraging sweat to evaporate and making you feel cooler. When used alongside cross-ventilation and other simple measures, though, it can significantly improve thermal comfort.

This strategy is particularly useful on milder nights, once the outdoor temperature has started to drop and cooler air can refresh the room more efficiently.