Calculator
Can this home be kept warm, and what does it cost?
Put in the heat demand from a home’s Energy Performance Certificate. You get what heating it properly costs a week, in winter and on average, on its current heating and on a heat pump, ready to print for a report.
Verified: 23 October 2026 from Ofgem regional price cap rates
How is this calculated?Stays on this page. Nothing you type here is sent anywhere.
Not sure? Find it by postcode.
kWh a year
kWh a year
Both are on the property’s certificate at gov.uk/find-energy-certificate, where it gives the estimated energy needed each year for space heating and for water heating. Older certificates may not show them.
kWh a year
Starts at Ofgem’s typical household electricity use.
£a week
Including benefits. Used only to show the bill as a share of income.
Efficiency assumptions
%
Enter the space and water heating figures from the EPC to see what keeping this home warm costs.