Your EPC, in plain English

What does my EPC band mean?

Pick your band below. We’ll show you what it actually means, the bills it points to, and the three measures most likely to move the needle next.

For bands E–G, the answer is fabric-first: insulation and draught-proofing before any heat-source change. We won’t sell you a heat pump that will run more expensively than promised.

Fabric-first is advice, not a grant rule. The £7,500 Boiler Upgrade Scheme no longer needs cleared loft and cavity recommendations (since May 2024) or a valid EPC (since April 2026), but insulating first still lowers what a heat pump costs to run. One honest caveat: switching from gas to a heat pump can sometimes nudge your EPC rating down, even though the home is genuinely lower carbon, because the rating is scored on modelled running cost rather than emissions.