Top tips to improve your property’s EPC rating

From the 1st April 2018, unless applicable exemption, it will be unlawful to rent a property which has an Energy Performance Certificate (EPC) rating of F or G.

And don’t just think of improving energy efficiency as something for meeting regulations. It’s a commercial decision too. Given most tenants are responsible for paying energy bills, some may be willing to pay more for properties that are energy efficient.


Replace existing halogen or non-Low Energy Lighting (LEL) with LEL’s, Compact Fluorescent Light’s (CFL) or Light Emitting Diodes (LEDs) – simple and inexpensive to introduce.

Roof Insulation

Ensure that your loft insulation is at least 270mm in depth – simple and inexpensive. If your loft is at 90mm or less you can get funding to have the loft filled or topped up!

Wall construction

If your property has a cavity wall construction (common for properties built after 1920), ensure that this is filled. Funding is also available for this efficiency measure and has a huge impact on the EPC rating.


Without properly insulated windows, the property could be losing up to 10% of its heat. Double glazed windows make a big difference when it comes to lowering energy bills. Instead of double glazing you could install secondary glazing. It involves fitting a pane of plastic or glass inside the existing window to create an insulating layer of air. Though not as effective as double glazing, secondary glazing still saves a significant amount of energy.


Even if you have an old boiler, the introduction of modern controls such as a room thermostat, individual Thermostatic Radiator Valves (TRVs) and Boiler Programmer will have a positive bearing on the EPC results.

Renewable technologies

These cover a wide range of technologies ranging from Solar / Photovoltaic panels, that replace conventional central heating systems. It can be up to 20X more efficient but significant alterations can cause a much higher expenditure. However virtually ALL Renewable Technologies are currently incentivised via government backed and guaranteed Feed-in-Tariffs (FITs). This is in order to provide domestic hot water and central heating at significantly reduced rates in comparison to many other systems.

For further information, check the government website: