Supreme Installations

Windows > A & B Rated Energy Windows

Supreme Installations have upgraded their standard Rehau S706 (70mm) casement window to C Energy rated. This is saving our customers money and helping the environment. We also have the B and the A Rated Window.

energy chart    energy chart    energy chart

What is Window Energy Rating?

  • As well as calculating the overall accurate ‘U’ value for a specific size and design of
    Window (frame and gaskets etc as well as the double glazed unit), Window Energy
    Rating also takes into account the significant benefit to be derived from solar gain along
    with the heat lost through air infiltration.
  • The Window Energy Rating process provides all the necessary input to SAP
    Assessments for New Build.
  • However, for consumers and replacement windows all BFRC Window Energy Ratings
    are based on the same window style/configuration and size given in Approved
    Document Part L (2002).
  • The two digit BFRC Window Energy Rating is measured in units of kWh/ m2 /year, the
    result of which determines where the window will sit on the descending A-G energy scale.

BFRC WINDOW
Energy Rating Label Scale

kWh/m2/year

A

0+

B

  -10 to 0  

C

  -20 to -10

D

  -30 to -20

E

  -50 to -30

F

  -70 to -50

G

  -70+

Contact us to discuss your requirements and get a quote.