Smart Home Energy 
If you feel cold air blowing through your letterbox in winter, this £5 brush-and-flap excluder cuts the draught without blocking post — screws on in five minutes, leaves no damage when removed.
Problem it solves
Stops cold air coming through the letterbox, reducing heat loss and draughts in the hallway without blocking post delivery.
Who it's for
Homeowners or renters with front doors that have a letterbox opening, especially those with draughty hallways or doors facing prevailing wind.
Why we recommend
Draught exclusion on letter boxes is a really easy win to save energy.
Savings
- Typical annual saving
- £5–£15/year depending on door exposure and heating usage
- Payback period
- Under 1 year
