Heron Windows Ltd

Quality Windows, Doors and Conservatoriesin East Grinstead, West Sussex

Energy Efficiency

Energy rating

Some window and door manufacturers show the energy efficiency of their products using an energy rating scheme from A to G - like the one used for appliances such as fridges. The whole window (the frame and the glass) is assessed on its efficiency at retaining heat. The scheme is run by the British Fenestration Rating Council (BFRC), and you can find more information on the BFRC website. Our products go one stage further. We have achieved a Window Energy Rating (WER) for our products which has been verified by The British Standards Institute giving us our very own kitemark. You can be sure that when we say our products are "A" rated.... they really are!

Low Emissivity Glass

Vital to the energy efficiency of the Window is the glass itself. All our "A" rated windows featured Planitherm Glass.

Planitherm products use a special coating to reflect heat from domestic heat sources back into the room, rather than allowing it to escape through the windows. At the same time, this coating allows free heat and light from the sun to pass through the glass, warming the room and further contributing to the energy efficiency of the windows and helping to reduce your energy bills.