Smart Home Energy 
If you have an old front or back door with a traditional keyhole, this £4 cover stops the draught that comes straight through it — takes two minutes to screw on.
Problem it solves
Stops draughts coming through external door keyholes, reducing heat loss and cutting heating bills.
Who it's for
Homeowners or renters with external doors that have traditional keyholes and want to eliminate a common draught source.
Why we recommend
Another easy win for stopping heat loss.
Savings
- Typical annual saving
- Not estimated — marginal saving, part of broader draught-proofing measures
- Payback period
- Under 1 year if part of comprehensive draught-proofing
