1st Call Vista Ltd

1st Call Vista Window Energy Calculator (WER)

- What Does the Window Energy Efficient Ratings Label Tell You?

The BFRC Scheme is the UKs 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. ( WER )

Window Energy Ratings WER 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/(m²-K) in this example the product will lose 16 kilowatt hours per
square metre per year.
3. The window U value eg. 1.4W/(m²-K)
4. The effective heat loss due to air penetration as L
eg. 0.01 W/(m²-K)
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

* 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.

Energy Efficient Windows are easy to recognise - simply look for the BFRC Label.