What are energy ratings and how do they affect my home?

Energy Efficiency ratings give you an indication of how energy efficient your window/door is, the main rating advertised is usually the Window Energy Rating (WER), which is calculated via several factors. Once you know what they mean and why they matter you can make a more informed decision about your new windows and doors.

What is the Window Energy Rating (WER)?

The WER is based on a scale of D to A++ (A++ being the most efficient). Since 2022, legislation has required replacement windows to hold a minimum WER of B in order to comply with English Building Regulations – so you can rest assured your windows from Window Elegance Yorkshire will offer you stellar protection from the climate.

The material, frame design, and glazing are all considered when calculating the ratings for the window or door. WER Ratings are calculated using a combination of U-Value, Solar factor (G-value) and Air Leakage (L-Factor).

What is ‘U-value’?

U-value is the measurement of how easily heat gets through your windows and doors. The higher the value, the more heat escapes, so when the U-value is lower, the better the window/door will trap heat.

U-value is worked out by dividing the rate of heat transference by the temperature difference on either side of the window or door. Our standard casement windows have a U-value of up to 1.4. This means that for every degree of difference between the inner and outer panes of glass, 1.4 watts of heat energy is lost per square metre of glass.

Opting for triple glazing decreases the u-value further, bringing further enhanced energy efficiency to your home.

What are ‘G-value’ and ‘L-factor’?

The G-value of a window simply measures how much sun gets through the window, or how much heat gets transmitted through a window from the suns’ rays. A high G-value represents the uninterrupted transmittance of solar energy, whereas a low G-value of 0 means that all solar energy is blocked by the glazing.

The L-factor represents how much air leaks through your window. If your window has a high L-factor, your property will be more prone to draught, whereas a high L-factor (indicating an airtight window) would mean you’re far less likely to experience draught in your home.

Why Energy Ratings Matter

Choosing windows and doors with good energy ratings is crucial for several reasons:

1. Energy Savings: Energy efficient windows and doors reduce the heat escaping your home, which helps with your energy bills, whilst also reducing your carbon footprint.

2. Enhanced Comfort: By keeping the temperature in your property more consistent, energy efficient windows and doors contribute to a more comfortable living environment, with less drafts and cold spots.

3. Increased Property Value: Homes with energy-efficient features, including top-rated windows and doors, tend to have higher market value. Potential buyers often prioritize energy efficiency, making it a smart investment.

By opting for our windows and doors, you can enjoy the benefits of lower energy costs, a more comfortable living space, and the peace of mind that comes with knowing you’ve made an environmentally friendly choice.

When choosing windows and doors from Window Elegance Yorkshire, you can expect a cosier living space, and the satisfaction of knowing you’ve made an environmentally friendly choice, all while enhancing the overall efficiency and comfort of your home.

If you’re interested in energy efficient windows and doors, get in touch and find out how we can help you today.