England & Wales · Savings & payback
What could improving this home save on bills?
Pick a home's type, age and current band to see the modelled annual saving at band C (the warmer, cheaper-to-run standard) — priced at today's energy cap, not a fixed assumption — with the payback and the ten-year net.
Typical annual saving on energy bills
£280/yr
about 17% off a typical £1,641/yr dual-fuel bill
Simple payback
68.6 yrs
Net after 10 years
-£16,400
What the work costs
£19,200
Saving is the cohort's median modelled running-cost reduction at the potential rating. The bill anchor is the live Ofgem price cap ↗ (2026-Q2) applied to a typical-consumption home — not a fixed assumption. Payback and net ignore inflation, finance and future cap changes; treat them as indicative.
Based on 938,865 houses built 1930–1949 currently rated band D, from the full EPC register.
Want the number for your actual home?
These are cohort medians. Check your real EPC instead.
Enter your address and we start from the home's real certificate in the register — its own rating, the recommended improvements, and what it'd cost to make it warmer and cheaper to run — not a typical home like it.
More calculators
- EPC improvement simulatorWhat band a home like yours can reach, and what each measure does.
- Cost to reach band CThe median cost to get there, broken down by measure.
- Heat pump calculatorSuitability, the £7,500 grant, and the running-cost case.
- Retrofit grant checkerWhich grants you may qualify for, by tenure, band and income.
- MEES exemption checkerFor landlords: whether a below-C rental qualifies for an exemption, and how to register it.
Savings from the full EPC Open Data register; bill anchor from the live Ofgem price cap applied to a typical-consumption home. Indicative — not financial advice. Methodology.