Southern pvc Systems Ltd.
The Carrick Business Centre, Brislington ,Bristol BS4 5NZ
tel: 01179 710359. Fax: 01179 720998

 

 
 

Online price
Calculators

 

Help and Information

 

 

fensa logo

 

 

 

Window Energy Ratings (WER's).

Window enery ratings are A,B,C,D,E,F...just like the labels on new refrigerators, washing machines etc. The diagrams show A as the highest rating...most energy efficient and F as the lowest rating...least energy efficient.

Since October 2010, building regulations require that a MINIMUM of C rating is used (or at least a U value of 1.6w/m2).

Our standard windows comply with the minimum rating of C, however, we can easily upgrade to B or A rating for a small additional cost and, so that you can easily compare prices for each, our calculators have this facility built in.

 

The energy ratings A,B,C,D,E. are rated on a scale according to the energy lost though the window in one year...this is experessed as a negative number of KWH/M2/year.........Kilowatt hours/heat loss per square metre of window/per year

 
Energy rating scale KWH/Sq. Metre/Year (heat loss)
A
Loss of 0Kw/H per year or a gain of 'x' KwH/ per year (ours = A+10...a gain of 10KWH/ per square metre per year)
B
Loss to 10KwH/per sq.m per year.
C
Loss of 10 to 20 KwH/per sq.m per year.
D
Loss of 20 to 30 KwH/ per sq.m per year.
E
Loss of 30 to 50 KwH/ per sq.m per year.
F
Loss of 50 to 70 KwH/per sq.m per year.

 

 

 

 

 

 

 

 

 

 

How much could you save?

By installing double glazing in an entirely single glazed house you could save the following each year:

Energy rating

Detached

Semi detached

Mid terrace

Bungalow

Flat

A rated £130 - £175 £90 - £120 £80 - £105 £60 - £80 £50 - £65
B rated £120 - £160 £80 - £110 £70 - £95 £50 - £70 £40 - £60
C rated £120 - £150 £80 - £105 £70 - £90 £50 - £65 £45 - £55

These savings are for typical gas heated homes.

 

 

 

 

 

 

window energy rating diagram

 

 

1kw electric fire

A loss of 10kwH per sq.m per year is equivalent to paying for a fire like this to be on for 10 hours each year outside, for every sq metre of glass in your home.

An A+10 rated window will provide you with 10KwH energy per sq m of glass each year inside for no increase in your energy bills.

SOUTHERN PVC SYSTEMS LIMITED.
THE CARRICK BUSINESS CENTRE,
BONVILLE ROAD,
BRISLINGTON,
BRISTOL.
BS4 5NZ