An EPC (Energy Performance Certificate) rating of E means a property has below-average energy efficiency but still meets the current minimum standard required for most residential properties.
EPC ratings range from:
A (Most energy efficient), B, C, D, E, F, G (Least energy efficient)
Many older UK homes fall into the D or E category, particularly properties built before modern insulation standards were introduced.
An EPC rating of E is not necessarily bad, but it does indicate that your property could be losing more heat and consuming more energy than a more efficient home. Properties with an EPC E rating often experience higher energy bills, greater heat loss, older heating systems, limited insulation, reduced comfort during winter months.
While an E rating remains legally acceptable for many homes, improving it can reduce running costs and make your property more attractive to buyers and tenants.
Your EPC rating gives an indication of how much energy a property uses and how expensive it may be to heat. A higher-rated property may benefit from, lower energy costs, improved comfort, reduced carbon emissions, increased property appeal. Mortgage lenders and buyers are also paying increasing attention to energy efficiency when assessing properties.
Common improvements include:
A significant amount of heat can escape through an uninsulated roof. Adding or upgrading loft insulation is often one of the most cost-effective improvements.
Cavity wall or solid wall insulation can help reduce heat loss and improve overall efficiency.
Solar PV systems generate renewable electricity and can improve a property's energy performance.
Battery storage allows homeowners to store unused solar energy for later use, helping to reduce reliance on the grid.
Air source heat pumps can provide efficient heating and may improve a home's energy performance when combined with other upgrades.
Smart Energy Homes helps homeowners improve energy efficiency through renewable energy solutions, including solar panels, battery storage, insulation and air source heat pumps.
If you’re unsure of your property’s rating, you can search the Government EPC Register using your postcode or address and download your certificate free of charge.
An EPC rating of F indicates that a property has poor energy efficiency and may be losing more heat than necessary, leading to higher energy bills and reduced comfort. In this guide, we'll explain what an EPC F rating means, the common causes of a low rating, and the practical improvements that can help boost your home's energy performance.
Wondering what an EPC rating E means for your property? An EPC rating of E indicates that a home has below-average energy efficiency and could benefit from improvements such as insulation, solar panels or heating upgrades. In this guide, we'll explain what an EPC E rating means, how it affects energy bills, and practical ways to improve your home's energy performance.
From March 2027, Wales will require renewable electricity generation in every new‑build home - effectively making solar the go‑to choice for developers. Published: March 17, 2026
Boiler pressure plays a key role in keeping your heating system running safely and efficiently. Learn what it should be and how to fix common pressure issues. Published: January 27, 2026
Old or unreliable boiler? Discover when it’s time to replace it and how a modern system can improve efficiency and comfort. Published: January 27, 2026
Discover how much a new boiler costs and explore flexible payment options to suit your budget, including monthly finance plans. Published: January 27, 2026