Energy bills through the roof? Five signs your house is leaking heat

From finding draughts to buying a thermal leak detector – there are simple, cost-effective ways to start sorting heat loss

Pick a day when there is a good breeze, and heat the house to its usual temperature. Then wander around with a candle or smoke pen (about £20). Alternatively, buy a thermal leak detector. This flashes blue for cold, green for normal and red for warm.

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