EPC Ratings A to G Explained for UK Homeowners and Buyers
How the A–G scale works, why two homes with the same letter can feel different to run, and what the rating does not tell you about comfort or defects.
Published: 15 Apr 2026 · Updated: 15 Apr 2026 · 7 min read
Property Passport UK
See this information for your own home
Free address search across England and Wales. No account needed.
19.4 million searchable properties. EPC, flood risk, sold prices, planning, and more in one structured record per home.
Headline bands
A–G is a relative scale for modeled energy performance at the time of assessment. A is most efficient in banding terms; G is least. The certificate also shows a potential rating if recommended measures were installed — treat that as indicative, not a quote.
Why the same letter feels different in real life
Occupancy patterns, thermostat settings, extensions, and DIY changes after the assessment date all change lived experience. The EPC is a regulated snapshot, not a live smart-meter readout.
What to do next
Read the pillar hub: EPC certificates and ratings in the UK, then pair this with a fabric-focused survey if you are buying.
Sideways: How to read an EPC certificate.
More Energy & EPC guides
Related calculators
Search any property in England & Wales
EPC ratings, flood risk, sold prices, and planning data — free, instant, no login required.