EPC Monthly Cost Calculator UK

An EPC D home uses roughly 210 kWh per m² a year, so a typical 90 m² (about a 3-bed) D-rated home costs around £140–£160 a month in energy — near the UK average. This EPC monthly cost calculator scales that by your band and floor area. Lower bands (E, F, G) cost substantially more; C and above cost less.

An Energy Performance Certificate rates a property's energy efficiency from A (most efficient) to G (least). It reflects insulation, heating, glazing and more. Lower bands leak more heat, so they cost more to keep warm — which is why the band is a good proxy for running cost.

Loft and cavity-wall insulation, a modern condensing boiler or heat pump, draught-proofing, double or triple glazing and LED lighting all help. Moving up even one band typically cuts energy use by 20–30%, and the certificate lists the recommended measures for your specific home.

Search the free government EPC register by postcode — most homes sold or let since 2008 have a certificate. It shows your current band, a potential band after improvements, and estimated costs.