Free tool
EPC Improvement Calculator
See how much you could save on energy bills each year by improving your property's EPC rating.
Estimated annual saving
£450
Improving from D → C · based on typical energy prices
Book an EPC to confirm your ratingEstimates based on Energy Saving Trust data for a typical semi-detached home. Actual savings vary by property size, type, heating system, and energy tariff.
How to improve your EPC rating
Most cost-effective improvement for uninsulated lofts.
Suitable for most post-1930s properties with cavity walls.
Replacing an old G-rated boiler with an A-rated condensing boiler.
Replacing single-glazed windows across the whole property.
Air source heat pumps are eligible for government grants.
Reduce bills and improve your rating with rooftop solar PV.
* Savings figures are approximate averages based on Energy Saving Trust data for a semi-detached house. Actual savings will vary by property size, type, and current energy prices.
Want to know your property's current rating? Book an EPC assessment.
Book your EPC from £75