Questions To Be Answered - Window Energy Ratings

Window Energy Ratings (WERs) became an integral part of the Building Regulations (Part L) from April 2005. Already, several manufacturers have achieved a rating on products which will typically save around £70 in heating bills and over half a tonne of carbon dioxide emissions per year. (when installed in a typical 3-bed semi with single glazing). However, the new style of high performance window is not without controversy, because it recognises a solar gain factor in addition to insulating properties. Windows achieving a rating of C and higher can carry the Energy Efficiency Recommended logo.