For you to compare different windows energy efficiency, Window Energy Ratings must be used. This will help you choose the right window for your home. That is because the window you choose can make a huge difference when it comes to warmth and security.
As such, if an energy-efficient window is installed correctly, it will help a property owner reduce heat loss, which translates to saving money, KJM Group can offer a wide variety of windows and will walk you through your options of which will be best for your home. This is why property owners are advised to install superior thermal performance windows because of their benefits in the long run. On the other hand, windows with poor energy efficiency is a major source of heat loss, which of course will lead you to spend more money on energy.
To know how efficient a window is when it comes to energy efficiency, you should look at its Window Energy Rating marker. These markers are colourful making it easy for anyone to read the window’s energy rating. This also helps people compare them easily. These markers have a similar rainbow-like design as the energy marker used in home appliances like washing machines, refrigerators, and others.
The energy rating on windows come in various schemes, and the most common are those operated by the CERTASS, British Standards Institute, and British Fenestration Rating Council. All of these work in the same way. A letter rating is given to a window based on its energy performance. Remember, this also includes the frame design, material, the type of grass used, and many other components. For example, an A-rated window is more efficient compared to a C rated window.
For a window to be given a letter rating, a calculation must be done. This is done using a formula that takes into account the window’s overall thermal efficiency, solar gain (this is the amount of heat from the sun that passes through the window), and air leaks.
Energy Saving and Energy-Efficient Windows
Remember, a Window Energy Rating only offers an indication of the efficiency level that the said window offers. However, it is important to note that the amount of potential energy saved by the window once it has been installed on a property will depend on various factors like; the installed insulation used, the window’s location, the efficiency of a heaty system, a building’s orientation, and more.
Window Energy Rating – FAQs
Question: Which is the best Window Energy Rating should I go for?
The primary function of a Window Energy Rating is to allow you to compare the potential of each. The ratings are generated from a computer simulation, and they are accurate. For this reason, it would be correct to say that the highest-rated windows will offer the most potential saving.
Different types of windows come with various energy ratings. The choice of which ones to buy falls on your lap. In other words, it is your decision to choose which one you prefer to buy, which is also affected by many other factors such as material preferred, the design requirement, budget, and planning restrictions.
Ever since 2009, KJM has been offering letter window ratings of A-, C, or E. however, so that we can comply with new regulations, we only offer C and A-rated windows. When it comes to cost, the difference is too small to appoint where we feel that A-rated frame should be the standard choice.
Question: What is Window Energy Rating (WER)?
This is a neutral way that is used to measure a window’s total energy performance. For this to be determined, the following energy rating criteria must be applied:
• Solar gain
• Air Leaks
• Glass used
• Framing material used (timber, aluminium, or PVC)