The British Fenestration Rating Council's Domestic Window Energy Rating Schene provides a way to compare the energy performance of windows.
Windows that achieve a C rating or higher can carry the 'Energy Saving Recommended' tag. All our Energy Efficient windows achieve C rated or better energy efficiency.
This measures how well a product prevents heat escaping.
This measures how well a product blocks heat caused by sunlight.
This relates to the volume of air leakage from a window.
Lower numbers achieve a higher rating (A to G).
DuraGreen Windows could reduce your wasted home energy by up to 20%