Chimney balloons, which are nearly indestructible balloons you place inside the chimney to block drafts, can work to stop the cold, but they can be expensive. One DIY solution? Rip open a ...

2. Chimney balloonFROM £22, chimneyballoon.com Simple and effective, The Chimney Balloon is the must-have for every energy-conscious home. Specially engineered, it stops warm air going up your ...