UK households use cheap hacks like foil behind radiators to save energy and stay warm this winter.

As winter sets in with cold snaps and snow, UK households are turning to low-cost hacks to stay warm and cut energy bills. Consumer group Which? recommends placing a dry towel or aluminum foil behind radiators—costing as little as £1.35—to reflect heat into rooms, improving efficiency, especially on external walls. The NHS advises heating when outdoor temps drop below 15°C. While results vary, the method is praised for being simple, affordable, and easy to implement, offering a practical step to reduce energy use without major upgrades.