Brits Told to Keep Windows Closed in Heatwave

The Challenge of Staying Cool in the UK During Summer

In the United Kingdom, homes were originally designed with the intention of keeping residents warm during the cold winter months. However, this same design can become a problem when summer heat arrives, causing houses to feel stuffy and uncomfortable.

The Met Office has confirmed that the UK is currently experiencing a heatwave, with sunny conditions, minimal rainfall, and temperatures rising above 30°C. Although no official weather warning has been issued, the UK Health Security Agency (UKHSA) has raised alerts across England, issuing yellow and amber Heat Health Alerts to warn people about the potential dangers of high temperatures.

As the heat intensifies, many individuals are seeking ways to stay cool. Common strategies include using fans, drinking cool beverages, and opening windows to let in fresh air. However, this approach may not be as effective as it seems.

The Misconception of Opening Windows

According to a spokesperson from energy company OVO, opening windows might actually make things worse. "Tempting as it is to fling open the windows at the first sign of summer, it's not actually the best idea," they explained. "To keep your house cool, you need to keep the hot air out."

This means that homeowners should consider keeping their windows closed during the day, especially those facing south, which receive the most direct sunlight. It’s also advisable to close curtains, blinds, and windows when the sun is shining on them, even if you're not at home. Instead, try opening windows on the shaded side of the house to avoid letting in hot air.

The same advice applies to garden doors. Leaving them open can allow hot air to enter the home, making it even more uncomfortable.

Alternative Ways to Cool Down Your Home

While the warmth of summer is welcomed by many, it can also lead to overheating in homes. This can be particularly dangerous for certain groups, such as the elderly or those with pre-existing health conditions. A hot environment can worsen these conditions and, in extreme cases, be life-threatening.

The UKHSA has provided some practical tips to help make homes more comfortable during hot weather:

Shade or cover windows to reduce the amount of heat entering the house.
Open windows when the outside air is cooler, ideally at night once the sun has set, to encourage airflow through the home.
Use electric fans if the temperature is below 35°C, but avoid directing them directly at your body, as this can cause dehydration.
Ensure that heating systems are turned off to prevent unnecessary heat generation.
Turn off lights and electrical equipment that are not in use to reduce heat output.
Consider cooking during cooler parts of the day to avoid adding extra heat to the home.
Move to cooler areas of the house, especially for sleeping, if possible.
If safe to do so, visit shaded outdoor areas or public buildings like libraries, supermarkets, or places of worship to cool down.