the difference to your home


Certificate Order

Only homeowners who have purchased BFRC rated energy efficient windows that were installed by a FENSA Approved Installer can apply for a BFRC Energy Rating Certificate. The certificate confirms the energy efficiency rating of the window installed at the property and costs just £15.00, including VAT.

Keep your BFRC certificate safe with your FENSA certificate as it could be useful when you come to sell your home.

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Why energy performance matters

Rising of Energy Costs

Reduce energy bills

Installing BFRC rated energy efficient windows and doors will save you money on your energy bills. Citizens Advice calculated that energy price increases were eight times higher than rises in average earnings from October 2010 to November 2013. Many experts predict the costs of heating homes will continue to rise.

Cut carbon emissions

Being able to reduce our energy bills and reduce the carbon emissions from our homes by making them more energy efficient is becoming increasingly important so when investing in windows and doors, make sure they are BFRC rated.

Reduce the Carbon Emissions

Improve comfort in your home

Improve comfort in your home

Building regulations stipulate that replacement windows must be rated C or above and doors E or higher, except in historic properties and conservation areas. BFRC ratings do much more than comply with building regulations, they help you choose the right energy performance to make your home more comfortable to live in.

Why insist on BFRC energy rated windows and doors

When choosing energy efficient windows or doors for your home, you can see how they'll look but not how they'll perform. That's why it is crucial to check your installer will use BFRC-rated products. This will help you make a fully informed choice about what energy performance rating, from A++ to C is right for your specific installation. When your windows are fitted, our rainbow rating label will prove they will perform as promised.


Ask for proof your windows and doors will perform as promised

Many suppliers claim their windows and doors are A-rated for energy efficiency. Some make unsubstantiated claims. But how can you tell the difference? It's easy! Just check your products are supplied by a BFRC Approved Installer.

News & Advice


Use the BFRC search facility to find installers of BFRC rated windows and doors. All certified products can be found on the installers BFRC listing. Installers are periodically audited to check that they are complying with BFRC rules. It is possible to identify BFRC rated windows and doors by checking a small permanent mark or sticker detailing the BFRC licence details discreetly placed in the opening of the window.

Occasionally an installer does not have their own rating, and therefore won't be found when searching on our website. They can however install rated products which they have purchased from a licenced BFRC fabricator. In this case the completed product will be marked by the manufacturer.

It is important the installer confirms the product will be BFRC certified to avoid disputes later! If in doubt always contact our friendly team who can offer advice and assist in identifying if a product is BFRC rated.
Triple glazing can be used to produce very thermally efficient windows and doors and are typically used in A++ ratings. However it is important to remember that in addition to the thermal performance (U values), Energy Ratings also take into account the positive effect of solar gain (free energy from the sun). The additional pane of glass can significantly reduce the solar gain and result in reducing the energy rating. So depending on the glass types used, it is possible for double glazed units to achieve the same Energy Ratings.

Not necessarily. Windows with triple glazed units can give lower glass (centre pane) u values, however this is very much dependent upon the types of glass used. Typically the additional third pane of glass will reduce the solar gain significantly. It is possible to achieve the BFRC A+ rating using double glazed windows.

The energy rating calculation takes all components of the window or door into account.
There is no direct correlation between u value and energy rating. It is possible to achieve an A rating with u values ranging from 1.0 W/m2K through to 1.7 W/m2K as the solar gain and air leakage needs to be taken into account.