When you are out shopping for replacement windows, your desire is to have energy efficient windows, which will help you lower your heating and cooling bills. To find such a window, you should know the various parameters used to classify the energy efficiency of the windows, and to help you out, here are some of the things you should look for in your search for energy efficient windows:

The R-Value of the window

The R-value points directly to the windows’ ability to resist the flow of heat through it. It thus implies that a window with a higher R-value will be more energy efficient than one with a low R-value, which is less energy efficient. However, you should take note that the R-value will vary from one region to another, and as you make your comparisons for replacement windows you may require, make a note of the region where the window will be installed.

The frame material

Window frames are made of different materials, all of which have different insulation characteristics. The common materials you will encounter include wood, aluminum, fiberglass, and composite, amongst others.

The type of glazing

You can choose to go for single, double or triple glazed insulation windows. Each will have its own energy efficiency, and sometimes, the higher the number of glazing, the better the energy efficiency of the window. For better insulation, most homeowners prefer to use triple or double glazed windows, as opposed to using single pane windows.

Glass coating

Glass coating may also impact the energy efficiency of your home. With coated windows, the heat and light from the sun are reduced, as a lot of radiant heat is reflected back to the source. This type of window, normally tends to help keep the house warmer during winter by trapping heat inside the house, and cooler during summer by blocking heat from accessing the inside of the house.