Replacement windows are a significant investment. An investment in time, money and the standard of your home. With the right windows, your home becomes a place of comfort and warmth that you’re proud of. Poorly chosen windows can spoil the look of your home and let in draughts, cold and noise. Around 20% of the heat escaping from any home is lost through its windows, so it pays in the long term to understand how to make the right window choice.

What are energy ratings?

Window Energy Ratings (WER) are a guide to the energy performance of your windows. The British Fenestration Ratings Council (BFRC) window energy rating scheme checks all the components to ensure the final window achieves the energy efficient standard claimed. This means that you just need to look for the A-G ratings and remember A is best – the higher the energy rating, the more energy efficient it is. Simple when explained, isn't it?

The latest Building Regulations require all new homes to have a minimum ‘C’ WER rating. This is a useful benchmark to consider when choosing replacement windows.

C - RATED EXPLAINED
Pilkingtons K glass / energy saving glass on the exterior pane which reflects the heat back into the room.
A  super therm spacer bar between the two panes giving the glass a warmer edge to try to reduce the effects of condensation.

A-RATED EXPLAINED
Planitherm energy saving glass on the interior to increase the level of heat retained in the room.
Opti white / Diamanti glass on the exterior pane to deflect the cold or heat away in a similar fashion to the interior pane.
Argon or Zenon gas filled cavities between the 2 panes. High insulating inert gasses which fill up the empty space.
Foam filled window profile as standard on all  A- RATED windows to prevent any cold spots whatsoever.
A  super therm spacer bar between the two panes giving the glass a warmer edge to try to reduce the effects of condensation.