The British Fenestration Ratings Council (BFRC) is part of the UK glazing industry’s trade association, the Glass and Glazing Federation. It’s ratings scheme for Energy Efficient Windows is a voluntary scheme that uses energy labels specifically produced for windows that are similar to the energy labels seen on most household appliances such as fridges and freezers.

The most energy efficient windows (rated A to C) also carry the Energy Saving Recommended logo issued by the Energy Saving Trust.