A consumer behaviour expert has shared their tips for the little-known but effective cost-saving strategies to beat the heat this summer.

UK summer temperatures have hit record highs this July, with energy prices still lingering near peaks, leaving households bracing for soaring cooling costs. According to Ofgem, average energy bills have risen by over 40 per cent since 2021, making heatwave bills costly for some households.

Joerg Nottebaum, an expert from Hello Millions, suggested his five unusual ways consumers can beat the heat and save money.

Read below for more!

[1] Insulate loft hatches or hot water pipes to cut summer heat transfer

Uninsulated loft hatches and exposed hot water pipes can radiate excess heat into your home, especially during peak summer.

DIY insulation kits cost under £10 and can reduce passive heat gain, meaning less need for fans or cooling. This also improves winter energy efficiency, doubling your long-term savings.

[2] Turn fans outward in daytime/ ‘Push’ cooling trick

Joerg recommends positioning fans facing out of windows in hot hours to pull warm air out, consuming only ~3 p/hour vs. £0.50+ for air conditioning. This simple shift slashes energy usage without sacrificing comfort.

[3] Delay dishwasher, dryer and washer to off-peak hours

Many UK suppliers offer up to a 30 per cent discount during off-peak electricity rates. Running these appliances after 8 pm can save up to £0.15 per kWh.

[4] Use a wet sheet and cross breeze instead of buying cooling tech

The “wet sheet method” involves hanging a damp sheet in front of an open window or fan.As air passes through it, evaporation cools the room for pennies. This DIY evaporative cooler mimics pricier AC units and works especially well in dry heat.

[5] Freeze pillowcases or bottles instead of buying night cooling systems

Simple DIY hacks like freezing pillowcases or water bottles are low/no-cost and avoid buying expensive “cooling” gadgets.

Final tip

Joerg Nottebaum said: “Surging bills can feel like legal penalties during a heatwave, especially when families are told heating or cooling is a ‘necessity’ even in overheated homes. For students, renters, and remote workers, especially those on tight incomes, heatwaves can be dangerous and financially draining, more than uncomfortable. The good news is that there are simple, low-cost ways to stay cool and safe.

“Start by managing airflow. During the hottest part of the day, keep windows and blinds closed to block heat. In the evening, create a cross breeze by opening windows on opposite sides of your home and placing a fan to pull cooler air in. Hanging a damp towel or sheet in front of that airflow can drop indoor temperatures significantly.

“Avoid using heat-generating appliances like ovens, dryers, or irons during the day, as they can raise indoor temps by several degrees. Instead, opt for cold meals, and batch your laundry and dishwashing for off-peak nighttime hours when electricity is cheaper.”

Joerg added: “Stay hydrated and take cold showers or foot baths throughout the day. If you’re working from home, rotate between cooler rooms or even libraries and public spaces when possible.

“Surviving a heatwave doesn't require air conditioning. However, it does require smart, accessible cooling strategies. With a little planning, you can stay safe without breaking your budget. Choosing smart savings now can reduce disputes or debt later.”