26/05/2026
When trying to cool down a room without air conditioning, many brits will unintentionally make the room even hotter. Follow these steps instead:
1. Keep blinds closed during the day
Especially on sun-facing windows. Light-coloured blackout curtains or reflective blinds work best.
2. Open windows only when it’s cooler outside
Usually early morning, late evening, and overnight. During the hottest part of the day, keeping windows open can make the room hotter.
3. Create cross-ventilation
Open windows on opposite sides of the home if possible. If there’s only one window, open the door and use a fan to pull air through.
4. Use a fan properly
A fan cools you, not the room. Put it near you, or place it by a window in the evening to pull cooler air in. If the room is hotter than outside, face the fan inward from the window. If the room is stuffy and warmer inside, face it outward to exhaust hot air.
5. Put a bowl of ice or cold water in front of a fan
Not magic, but it can make the airflow feel cooler for a while.
6. Turn off heat-producing devices
Lamps, games consoles, PCs, TVs, ovens and even chargers add heat. Use LED bulbs and avoid cooking indoors during heatwaves where possible.
7. Cool your body directly
Cold shower, damp flannel on neck/wrists, light cotton clothing, feet in cool water, chilled water bottle near you.
8. Use bedding that breathes
Cotton or linen sheets. Avoid heavy duvets. A thin sheet is often enough in summer.
9. Stop heat rising from outside surfaces
If the sun hits the window hard, external shading helps more than internal curtains: an awning, shade cloth, reflective window film, or even temporary cardboard/foil outside the window if you’re desperate.
10. Reduce humidity
If it’s humid, avoid drying clothes indoors and keep bathroom/kitchen steam contained. A dehumidifier can make a room feel cooler, though it does produce some heat.
