To help you identify the energy efficiency of a window, Window Energy Ratings (WERs) are used, very similar to a traffic light system. You can find energy ratings on most white goods, such as fridges, freezers, washing machines, and the energy ratings for windows work in a very similar way.
An A+ rated window is the most energy efficient window you can get in this country, as defined by the BFRC Rating Scheme, the UK’s national system for rating the energy efficiency of windows. A+ rated windows easily comply with the standard of thermal efficiency required to satisfy Building Regulations.
Keep your eyes peeled for windows with an A or A+ rating as they will give you the most warmth and energy efficiency.
It is a legal requirement that new, or replacement windows must have a minimum WER of C or above. Speak to a James Oliver advisor about Window Energy Ratings.