Window Energy Rating
What does the energy efficient window rating label tell you?
The 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 Rating uses 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 type has a label.
This label will display the following information:
- The rating level - A, B, C, etc.
- The energy rating e.g. -3kWh/(mï¿½ï¿½K) in this example the product will lose 3 kilowatt hours per square metre per year.
- The window U value e.g. 1.4W/(mï¿½ï¿½K)
- The effective heat loss due to air penetration as L
e.g. 0.01 W/(mï¿½ï¿½K)
- The solar heat gain e.g. 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
- Resist condensation
- Contribute to improved sound insulation
So What are Energy Efficient Windows? - Use Solar Gain to Benefit the Home
So exactly what are Energy Efficient Windows? They are windows that help to contain and conserve heat within the home, keeping out wind and rain, resisting condensation and yet allowing natural 'free' energy - the warmth of the sun - to heat the home. They can be made using any frame material - aluminium, PVC-U, steel or timber or even a combination of materials.
Energy Efficient Windows are easy to recognise - simply look for the label.