What is an energy efficient window?
A single pane of bare glass can gain or lose up to 10 times more heat than the same sized area of uninsulated wall.
Window size, orientation, glazing treatment, frames, shading, and internal coverings can have a significant impact on your home’s energy efficiency and comfort.
There are 3 key issues to think about when it comes to achieving energy efficient windows and glass doors:
- Minimising winter heat loss with internal window coverings and double glazing with efficient frames
- Maximising winter heat gain through north facing windows by letting the sun warm your home
- Minimising summer heat gain through north east and west windows with external shading
What are the benefits?
Windows are a vital feature of your home, allowing natural light in and providing ventilation and views.
Energy efficient windows are better at keeping the heat inside your house in winter and keeping the heat outside in summer. This can be achieved in a range of ways.
To keep the heat in, consider
- Internal window coverings
- Double glazing
- Secondary glazing
- Material used for window frames
To keep the heat out in summer, consider
- Shading external windows
- Glass coatings and films
How-to guides for windows
Our how-to guides offer helpful information on how to ensure that the windows in your household are energy efficient.