Overview of Window U-Values
U-values , a key measure of heat loss, are vital for understanding a window's thermal efficiency. Essentially, the lower the U-value , the better the insulation a window provides.
Confused? Essentially, the higher the U-value , the more heat transfer there will be. A lower U-value means less heat transfer, resulting in a better-insulated structure. For windows , the lower the U-value , the more energy-efficient it is.
Key Details About Window U-Values
U value , in simple terms, is the measurement of heat loss in a glass and the rate at which the heat is lost. It indicates the performance of the glass based on its ability to retain heat and not let it pass through the windows . U value is typically measured in Watts per square metre Kelvin or W/m2K.
Just like a house, each component of a window performs differently. Therefore, we talk about the frame value and glass value which combine to make the overall window value . Lower U-values mean more energy saved, lower monthly bills and a more comfortable and constant interior temperature.
What is a U
U-values are a measurement that can tell us the energy efficiency of a window , door, roof or wall in a house. Comparing the U-values of different branded products will help you to choose the best and most energy efficient windows and doors for your home.
In the window and glazing industry, U-values are frequently misunderstood — and just as often misrepresented. When a supplier quotes a U-value of 1.1 W/m²·K, they are almost certainly referring to the centre-pane value : a measurement taken from the centre of the glass…
Just like a house, each component of a window performs differently. Therefore, we talk about the frame value and glass value which combine to make the overall window value . Lower U-values mean more energy saved, lower monthly bills and a more comfortable and constant interior temperature.
U-value measures how fast heat passes through a window assembly, expressed in W/m²·K (watts per square metre per kelvin). Residential windows in Canada typically range from 0.20 to 5.80. The lower the number, the better the insulation. A good U-value for windows in Metro Vancouver is 1.22 or lower.
Key Details About Window U-Values
In order to achieve this rating, our aluminium windows and doors need to comply with the laid down performance values for energy efficiency. The terminology that we use to describe these performance values is known as U-value and Solar Hear Gain Co-efficient (SHGC).
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Window U
Easily calculate the thermal efficiency of your windows with our Free Window U-Value Calculator. Discover how glazing, materials, and insulation impact energy savings.
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