BFRC Window Energy Ratings (WER)

Duration windows has been fully certified by BMTRADA and fully registered and licenced by BFRC to fabricated 'A' Rated windows. But what does this entail? BMTRADA is the approved independant agency that was reponsible for auditing the simulation of the window rating and our manufacturing systems. BMTRADA had to ensure that we are in a position to fabricate and provide customers with a product, which is complient and fully rated under the BFRC scheme.

If you wish to find out more information or wish to enquire about Premium Plus windows, please don't hesitate to contact us. What energy rating are your windows?

Our BFRC Energy Certificates - please click to see a larger picture.
A rated window BFRC certificate presentation. BM Trada certificates for A rated window

Why ‘A’ Rated?

Why Use Double and not Triple Glazed Units?

Aluminium ‘A’ Rated Window Ordinary PVCu Window
Awarded ‘A’ rating for energy efficiency Secondary Glazing Frame types, Subframe, Odd Leg, Heavy duty, any ral colour Secondary Glazing Frame types, Subframe, Odd Leg, Heavy duty, any ral colour
Around a 10% reduction in heating bills Secondary Glazing Frame types, Subframe, Odd Leg, Heavy duty, any ral colour Secondary Glazing Frame types, Subframe, Odd Leg, Heavy duty, any ral colour
Increase in comfort due to less heat loss Secondary Glazing Frame types, Subframe, Odd Leg, Heavy duty, any ral colour Secondary Glazing Frame types, Subframe, Odd Leg, Heavy duty, any ral colour
Thin slim-line frame Secondary Glazing Frame types, Subframe, Odd Leg, Heavy duty, any ral colour Secondary Glazing Frame types, Subframe, Odd Leg, Heavy duty, any ral colour
Recyclable indefinitely Secondary Glazing Frame types, Subframe, Odd Leg, Heavy duty, any ral colour Secondary Glazing Frame types, Subframe, Odd Leg, Heavy duty, any ral colour
Resistant to corrosion Secondary Glazing Frame types, Subframe, Odd Leg, Heavy duty, any ral colour Secondary Glazing Frame types, Subframe, Odd Leg, Heavy duty, any ral colour
Low maintenance Secondary Glazing Frame types, Subframe, Odd Leg, Heavy duty, any ral colour Secondary Glazing Frame types, Subframe, Odd Leg, Heavy duty, any ral colour

What Is An Energy Rating For?


Consumers are increasingly focusing on the energy efficiency of building products to reduce the amount of carbon emissions. The simple U value does not fulfill these requirements because it only focuses on the heat loss from the window and takes no account of the solar heat gain that windows are responsible for and how they can improve the overall energy efficiency of the house.

Windows are rated using an A to G scale, which symbolises the total energy efficiency of a product. Where an A-rated window is the highest rating in energy efficiency and a G-rated window has the lowest rating in energy efficiency.

Our WER Products

'A' Rated - Downloads
Brochure Document Description Download
A Rated Aluminium Window A Rated Aluminium Window - 2 page brochure PDF Download
(1.4 Mb)
A Rated Aluminium Window A Rated Window Advert - 4 pages of adverts PDF Download
(1.4 Mb)
A Rated Aluminium Window Guide to Energy Ratings - 4 page article PDF Download
(0.4 Mb)

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