When shopping for new windows, most people jump straight to the aesthetics, however an important factor that should impact your decision is the window energy rating.
What Are Window Energy Ratings?
To give homeowners a clear way of comparing products, window energy ratings provide a system which measures how efficient a window is. It was introduced by the British Fenestration Rating Council in 2004.
Windows are rated using a scale from A++ to E, with E being the least efficient.
Not only measuring how well the glass on your windows insulates heat, it also measures how much solar heat is let in and how effectively it will be retained in your home.
Why are Window Energy Ratings Important?
Understanding your windows’ energy ratings has real benefits:
- Efficient windows reduce heat loss, so your heating system doesn’t have to work as hard. This doesn’t only benefit your home, but also lessens the blow that your wallet takes.
- No more draughts from dodgy windows or uneven temps in rooms.
- Using less energy to heat your house betters your carbon footprint.
- More attractive to buyers, especially with rising energy costs.
How are Ratings Calculated?
The BRFC consider three factors when calculating a Window Energy Rating:
- Firstly, they measure the U-value, which is how easily heat can pass through the window. The lower your U-value is, the better insulation your window has.
- Also, they measure the G-value, which correlates with how much heat from the sun can pass through the window. A higher value here means more free solar energy, and therefore could reduce heating needs.
- They additionally measure for the L-value, which shows how much air leakage is present. Poor window seals will allow cold in and the hot out, making heating bills rise.
Does the Frame Affect the Rating?
Frame choice plays a big role in how efficient a window can be:
- uPVC frames are popular in the UK for their affordability and are often used in A-rated windows.
- Aluminum frames are strong, but without a thermal break can struggle with insulation.
- Timber frames are naturally insulating, but require more maintenance.
Glazing
Double glazing has been the UK standard for many years now. It consists of two panes of glass with a layer of gas in between. Typically, it can achieve A to A+ window energy ratings.
The other option is triple glazing which uses three panes of glass instead of two, offering much better insulation. Often rated A+ to A++, it’s ideal for energy-conscious homeowners or individuals living in cold climates.
Final Thoughts
Window energy ratings aren’t just another meaningless measurement, instead they are a guide on how much comfort you could provide for your home and how energy-efficient you can make it. They affect your comfort, pockets, carbon footprint and attractiveness to potential house buyers.
Contact Us Now!
If you are looking to install efficient windows we will be a great match for you with our vast selection to choose from. We have years of experience helping homeowners transform their properties with high-quality, professionally installed windows, doors and conservatories. Whether you have a question, want to schedule a consultation or anything in between, get in touch with our team at: Email: info@cambridgewindows.co.uk
Call: 01223 297869
