The rating and score on an Energy Performance Certificate (EPC) reflects how much energy it takes to power a home and keep it warm.

A home’s energy rating ranges from A (most efficient) to G (least efficient). Homes will also be given a score out of 100. The higher the number, the lower energy bills are likely to be.

The types of things that can impact an EPC score include the heating system within the home, and how it’s controlled; if the windows are double or triple glazed; how well insulated the floors and walls are; and what sort of lighting has been installed.

So which features really boost a property’s energy-efficiency score?

We’ve taken a look at the energy-saving features installed in homes for sale with the top two EPC ratings of A and B.

Smart lighting

Lighting is one of the features that contributes towards a home’s EPC rating. Energy-efficient light bulbs, such as LEDs (light emitting diodes), last longer and generate less heat, so they reduce a household’s energy consumption.

Triple glazing

Typically, a home loses more heat through its windows than anywhere else, and many home-owners are now considering this sort of upgrade to make their home more energy efficient.

Solar panels

Solar panels take advantage of one of nature's most powerful yet free resources: the energy produced by the sun

Good insulation

Good insulation isn’t just about keeping a home warm: it’ll help keep it at a comfortable temperature throughout the year. But it’s particularly beneficial during winter, as you’re less likely to have heat escape through poorly insulated walls or roofs, or have draughts

Air source heat pump

One of the low-carbon alternatives to gas boilers are heat pumps. Air source heat pumps are powered by electricity, and move heat from the outdoors into your home.