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What are A-rated windows and window ratings explained

Windows are not all equal when it comes to energy saving - far from it! Fortunately there is an easy way to determine how energy efficient a window is and it’s called the Window Energy Rating or WER for short. 

Who calculates it?

Bfrc LogoThe Window Energy Rating is calculated by an organisation call the British Fenestration Rating Council (BFRC).The BFRC classify the energy efficiency of different windows on a scale ranging from A+ to G, with A+ being the highest rating and G being the lowest. They make this WER calculation based on the following three properties:

  • Heat loss (the 'U' value): how much heat a window transfers
  • Air leakage (the 'L' factor): how penetrable they are to the air
  • Solar gain (the 'G' value): how much they maximise the heat from the sun

What does it mean when choosing your windows

GenimageThe work of the BFRC means that the difficult work of measuring exactly how energy efficient a window is has been carried out for you. It means you can be assured that the windows we supply are at the cutting edge of technology and energy efficiency.

It also means you can make a fully informed choice on the basis of an independent third party assessment. You don’t just have to take our word for it, Safestyle Eco Diamond windows are A rated for energy efficiency by the BFRC.

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more about our windows Find out details below

Locking Points

The Eco Diamond incorporates hooks & mushroom cams at each locking point tested to our highest standards to give you ultimate peace of mind!

Toughened Glass

A-rated energy saving sealed units with toughened glass where required

Quality Handles

Precision manufactured from a high performance zinc alloy. They're tested to 50,000 cycles, that's more than twenty times the standard requirement!

Q-Lon Weather Seal

The Q-Lon design ensures maximum weather seal is obtained meaning no leaks and no draughts

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  • Safestyle Windows Product Bodyupvc 007
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