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How to Keep Your Home (and Yourself) Cool During a Heatwave in London

August 12, 2025

As a London-based property maintenance company, we know how rare but intense UK heatwaves can be. Many homes in London aren’t built with extreme heat in mind, which can make even a few days of high temperatures feel unbearable. Whether you’re in a Victorian terrace, a modern flat, or a converted townhouse, here are some tried-and-tested ways to keep your home.. and yourself cool when the mercury rises.

1. Block the Sun, Not the Breeze

Sunlight pouring through windows may look lovely, but it also raises the temperature indoors.

a. Close curtains or blinds during the hottest parts of the day

(typically 11am–4pm). Blackout or thermal blinds are ideal, but even light-coloured sheets will help reflect heat.

b. Open windows strategically

ideally early in the morning and later in the evening when outside air is cooler.

Create cross-ventilation by opening windows on opposite sides of the home.

2. Turn Off the Heat Sources

Many appliances produce heat, even when not in use.

a. Switch off electronics and lights

you’re not using, especially incandescent bulbs.

b. Avoid using the oven or hob

opt for microwave meals, salads, or BBQs if you have outside space.

If you’re in a flat or terrace, remember that upstairs heat rises so try to keep activity and appliances downstairs where possible.

3. DIY Cooling Hacks for Your Home

These simple techniques can make a surprising difference.

a. Place a shallow bowl of ice in front of a fan

to circulate cooler air (think of it as a mini DIY air conditioner).

b. Hang a damp sheet in front of an open window

the breeze will pick up moisture and cool the air slightly.

c. Use foil or reflective film on south-facing windows

to deflect intense heat.

4. Stay Cool, Personally – Health Comes First

Keeping your body temperature down is just as important as cooling the room.

a. Drink plenty of water

at least 2 litres a day, and more if you’re sweating.

b. Wear light, breathable fabrics

such as cotton or linen, and avoid dark colours.

c. Take cool showers or baths

to lower your body temperature before bed.

d. Use a damp flannel on your neck or wrists

or freeze a hot water bottle filled with cold water for an instant cooling pad.

5. Consider Long-Term Solutions

If heatwaves become more frequent (and they might), it’s worth investing in more permanent fixes.

a. Install ceiling or wall-mounted fans

or look into portable air conditioning units.

b. Add thermal or UV-reflective window film

to reduce indoor heat gain.

c. Consider external shading options

like awnings or shutters.

d. Have your insulation and ventilation systems checked

as a property maintenance company, we often find that poor airflow contributes to excessive indoor heat.

Need Help Preparing Your Home for Summer?

At BCC Maintenance & Cleaning, we offer a range of seasonal property checks and improvement services

from window sealing and insulation fixes to fan installations and post-heatwave deep cleans.

If your home struggled through this heatwave, we’re happy to help you get summer-ready for the next one.

📞 Contact us today for a consultation or to book our team. Stay safe, stay cool!