How much can a draft excluder save you?

According to the Energy Saving Trust, draught-proofing your windows and doors could save you up to £40 a year on your energy bills.

Small flats

In a small flat, where the front door often opens straight into the living space or hallway, fitting a draft excluder can help cut wasted heat and may save around £10–£20 per year, depending on how draughty the door was.

Medium-sized homes

In a medium-sized home, the front and back doors are common culprits. Sealing the gap at a main door can often save £20–£30 a year, while helping rooms feel warmer without nudging the thermostat up.

Larger family houses

For a larger family house, reducing just one strong draught can be worth £30–£40 annually, especially combined with other simple draught-proofing steps.

The bottom line

A simple draft excluder is one of the most affordable ways to reduce heat loss and trim your energy bills. While the exact savings depend on how draughty your doors are and your home's size, even modest annual savings add up over time – and you'll notice the comfort improvement straight away.