Energy Efficient Windows

Energy Ratings You Can Trust

Energy efficiency matters to many of our customers. To help you compare the performance of our energy efficient windows, we use the British Fenestration Rating Council (BFRC) energy ratings system. This is the UK’s recognised scheme for measuring window energy efficiency.

Under current Building Regulations, every replacement window must achieve at least a C rating or above to comply.

How Windows Are Rated

Each window is assessed on:

• How well it prevents heat loss
• How effectively it blocks draughts
• How much free solar energy it absorbs

These factors combine to create an overall energy rating ranging from A+ to G, with A+ being the most efficient.

A Rated uPVC Windows as Standard

• All our uPVC windows achieve an A rating as standard.
• An A rating means your windows gain more free solar energy than they lose through thermal transmittance.
• Triple glazed options are available up to an A+12 rating for superior performance.

By installing AGS energy efficient windows, you’ll keep your home warm while reducing energy bills.

Benefits of Upgrading Your Glazing

Switching to our A rated windows offers: 

• Lower heating costs 

• Improved warmth and comfort 

• Reduced CO2 emissions 

• Better soundproofing and security 

Moving from single glazing to A rated double glazing will save money and significantly reduce heat loss. Even upgrading older double glazing to modern A rated units will improve efficiency. 

Triple Glazing for Maximum Efficiency

For the best energy performance, consider triple glazed windows: 

• Achieve up to A+12 ratings 

• Help hard-to-heat rooms stay warm 

• Offer excellent noise reduction and security benefits 

 Styles and Options

Our A rated windows come in a range of styles. For even greater energy efficiency, you can upgrade any style to triple glazing, particularly effective in challenging areas of your home.