Window Energy Performance Ratings Scale

Reading a window energy rating label the bfrc energy window label utilises a traffic light a to e scale on the basis of total energy efficiency where an a rated window is the most energy efficient.

Window energy performance ratings scale.

The benefits of wer. Benefits of installing energy rated windows. Understanding the bfrc calculations. Windows are rated using an a to g scale to symbolise the total energy efficiency of the windows.

The window energy rating wer tells you how energy efficient your windows are. The entire window the frame and the glass is assessed to allow for heat loss draughts and solar gain giving a rating that indicates the overall impact of fitting that window in your home. Where an a rated window is the highest rating in energy efficiency and a g rated window has the lowest rating in energy efficiency. What are window energy ratings.

Nonprofit nfrc is the industry recognized certifying body for windows and doors. The scheme is similar to those seen on household appliances white goods and light bulbs. You will often find that older windows tend to be at the bottom of the scale as their performance decreases and they become less efficient over a long period of time. The rating system is based on a scale of e to a with a windows being the most energy efficient.

Window manufacturers can show the energy efficiency of their products using an energy rating scale from a to e. The energy efficiency of your windows is assessed by the window energy rating wer system with the scale going from a for the best performance to g for the worst performance. Today the window energy rating wer system follows a similar rainbow label that consumers are familiar with on white goods easily understanding the level of thermal performance for their new windows. The white national fenestration rating council label.

A window product s rating is listed at the top of the label using a letter and associated colour band. Replacement windows have to meet building regulation requirements for energy efficiency measured either through a u value calculation or a window energy rating wer with a rating scale of a g with a being the highest. Download these informative free guides. Government in addition to the nfrc ratings.