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Energy Ratings / 'U' Values

All glass used in our products conforms to current government requirements for Window Energy Ratings (WER's) and 'U' Values.

Information can be found throughout this site. if you wish to clarify anything regarding any of our products please do not hesitate to call 01268 571055

What Does the Energy Efficient Window Ratings Label Tell You?

The BFRC Scheme is the UK's national system for rating the energy efficiency of windows and is recognised within the Building Regulations as a method to show compliance for your replacement windows installation.

Window Energy Ratings use a consumer-friendly traffic-light style A-E ratings guide similar to that used on 'white' goods (such as fridges, freezers, washing machines etc.). This ratings label can be used by you to make more informed choices about the energy efficiency of the windows you are looking to purchase.

With carbon emissions high on the global agenda and the current high cost of fuel, we are all looking for ways to make our homes more energy efficient.

Each window rated by the BFRC has a unique label.

This label will display the following information:

  1. The rating level - A, B, C, etc ...
  2. The energy rating eg. -3kWh/(mĚK) in this example the product will lose 3 kilowatt hours per square metre per year
  3. The window U value eg. 1.4W/(mĚK)
  4. The effective heat loss due to air penetration as L eg. 0.01 W/(mĚK)
  5. The solar heat gain eg. g=0.43

Simply put this will determine how well a product will perform the functions of:

  • Helping you contain and conserve heat within your building in the winter
  • Keep out the wind
  • Resist condensation
  • Contribute to improved sound insulation

Energy Efficient Window Ratings Label