Up to 87% of the heat inside of a house is lost because poorly designed windows. The glazing industry has come a long way over the past 20 years or so and glass energy efficiency is now a priority. Because of that, all property owners can substantially reduce their utility expenses by installing the new state of the art windows that are now available.
Replacing your old windows with new energy efficient glass has another benefit, which is they help out the environment by decreasing the greenhouse gases that the electric companies release into the earth’s atmosphere. The newly designed windows are able to reduce heat loss by up to 75%, which can decrease your heating bills by up to 20%, or even more.
Energy efficient windows are designed to help you stay cool in the summer and warm in the winter. The type of windows your home will require in order to achieve a maximum energy efficiency rating is going to depend on a few factors. First, Australia is broken up into three climate zones, which are hot, mixed, cold, and different types of glass are usually used in each zone.
Second, a specialist will need to examine your windows to determine their orientation so that they can select the proper SHGC (Solar Heat Gain Coefficient) and U Value. It is possible for the windows on the front of your home to require one type of glass, and the windows on the back of your home to need another.
If all of that sounds quite complicated, it really isn’t, as long as you have an expert working with you. When and if you finally decide it is time to improve your glass energy efficiency not only will your wallet thank you, but you will also be helping out our countries ecosystem which is something we all should be doing.
Divisional General Manager – Jim’s Glass (Australia)
Board Member – Australian Glass & Windows Association