As Storm Goretti continues to unleash snow, wind, and ice across Britain, households are facing the dual challenge of staying warm and managing soaring energy costs. However, cranking up the thermostat too high can create an unwelcome side effect: mould. Experts are now advising on the precise heating settings to maintain a healthy, comfortable, and efficient home during this severe cold snap.
The Science of Condensation and Mould Growth
When warm, moist air inside your home comes into contact with a cooler surface—such as a wall or window—it condenses into water droplets. This damp environment is the perfect breeding ground for mould, which can cause significant damage to your property and pose serious risks to respiratory health. The key to prevention, according to specialists, is maintaining a consistent minimum indoor temperature.
Both the World Health Organisation (WHO) and the Energy Saving Trust recommend a minimum household temperature of 18 degrees Celsius to effectively combat damp, mould, and condensation. While it might be tempting to turn the dial much higher during a storm, the guidance is clear: your heating should not be set above 21C. This range is considered the optimal balance for energy efficiency and personal comfort.
Official Guidance for Different Rooms
Hayley Janssen, a public health researcher at Public Health Wales, provided specific advice to The Sun. "The Welsh Government currently advise households to set temperatures to 21C in the living room and 18C in other rooms for nine hours in every 24-hour period on weekdays," she stated. "On weekends, they recommend maintaining these temperatures for 16 hours in a 24-hour period."
Practical Tips to Control Moisture and Heat
Beyond thermostat settings, there are several practical steps you can take to keep your home dry and warm without inviting mould.
Monitoring your environment is easier with a smart meter, which provides real-time data on energy use and can help you manage consumption. Ensuring your property is well-insulated and properly ventilated is also crucial.
To reduce excess moisture in the air during this frosty period:
- Keep lids on pans while cooking.
- Try to limit shower times.
- Use extractor fans in kitchens and bathrooms.
- Open windows or doors periodically to allow fresh air to circulate.
- Consider installing vents in moisture-prone areas.
Finally, make sure your heat can circulate freely. Avoid placing furniture directly in front of radiators or other heat sources, as this blocks warmth from spreading through the room and forces your system to work harder.
By combining the recommended temperature settings with these simple moisture-control measures, you can create a healthier, more cost-effective living environment as Storm Goretti passes through.
