An Energy Performance Certificate (EPC) rates your property’s energy efficiency from A (best) to G. Whether you are selling, letting or simply trying to cut bills, it helps to know where improvements make the most difference.
Where the heat goes
A house loses heat through the roof, walls, floor, windows, doors and through draughts. The biggest wins usually come from insulation and heating, with glazing playing an important supporting role.
Improvements that typically help most
- Loft and wall insulation.
- An efficient heating system with good controls.
- Low-energy lighting.
- Replacing old single glazing or failed double glazing with modern energy-efficient units.
- Upgrading old, draughty doors.
Where windows and doors fit in
Replacing old or failed glazing can make a noticeable difference to comfort and bills, and improves the “windows” and “doors” elements of an EPC. Be realistic though. Windows on their own rarely lift a rating by a full band, but they work together with other improvements.
Why it matters for landlords
Rental properties in England and Wales must meet minimum energy efficiency standards, and these have been tightening. Better glazing and doors help towards meeting them and make lettings more attractive.
Get a plan
Your EPC lists recommended improvements for your property. Use it as a checklist, and ask us how new windows and doors can fit into the plan.