Windows are graded on their energy efficiency on a scale from A++ (most efficient) to G (least efficient). This rating is determined by how well a window performs in categories such as:

• Solar gain
• Heat loss
• Air leakage

Each window is scored against these categories to determine a (usually negative) number. This is translated into the letter rating system. The higher the numerical score, the better the rating. So, a G-rated window could have a score of -70, compared to an A-rated window, which may have a score of 0 or even a positive number.

There are also safety standards and accreditations and Fixaglaze are a FENSA member to ensure high-quality manufacturing and professional installation.

What are the Benefits of A-rated Windows? 

Fixaglaze only install A-rated windows which offer several benefits over lower-rated windows, including:

• Reducing the amount of heat lost
• Lowering energy bills 
• Reducing your carbon footprint 
• Improved overall temperature control and comfort
• Better ventilation and airflow
• Reducing condensation on the inside of windows

If you would like to find out more about our range of services, please call our team today on 0115 8377229