Double pane windows, also called dual-pane or insulated glass units (IGUs), have two hermetically sealed glass panes that are separated by an insulating space filled with inert gases like argon or krypton. This is what makes them more energy efficient compared to single-pane windows.
There are several factors that determine the cost of double pane windows. These include size, frame material, and installation costs.
Energy Efficiency
Double pane windows offer superior insulation, resulting in a comfortable indoor environment. They minimize heat transfer, helping to lower energy consumption and reducing utility bills. They also reduce outside noise pollution, making it easier to relax and enjoy your home.
These windows utilize two glass panes separated by a layer of insulating gas such as argon or krypton, along with a low-emissivity (Low-E) coating. The insulating gas and Low-E coating act as a barrier, keeping the heat from escaping during winter and the hot air from penetrating your home during summer.
The insulated nature of double pane windows also helps reduce condensation. Condensation occurs when moist indoor air comes into contact with cold window glass, which can cause moisture buildup and lead to mold growth. The insulating properties of double pane windows prevent this from happening, making them a smart energy-saving choice for Florida homeowners.
Low-E Coating
A low-emissivity coating reduces the amount of infrared and ultraviolet light that passes through windows, thereby increasing visible transmittance. This can help protect interior furniture, carpets and drapes from fading caused by UV light.
It can also improve key window energy efficiency metrics. For example, a passive low-E coating can reflect solar infrared radiation back into the home during the summer, which reduces your dependence on artificial heat sources. In the winter, it prevents heat from leaving the home, reducing your energy costs.
A soft-coated low E glass window has its metal coating applied to a surface that is sealed within an insulated glazing unit (IG). It cannot be damaged or scratched, meaning it will retain the vast majority of its insulating, sun-reflecting and UV protecting powers for years to come. This helps to significantly improve a window’s U-factor, a measure of its thermal performance. It can also reduce glare in a room. This feature is especially useful in areas with a lot of sunlight.
Condensation Resistance
While the U-factor rating, solar heat gain coefficient and visible transmittance ratings are well known to most window shoppers, the NFRC performance label also rates condensation resistance (CR). For cold climates such as Illinois, this is an important consideration when choosing new windows.
Condensation occurs when water vapor in the air comes into contact with a cooler surface, such as a windowpane or glass. This moisture will erode the aluminum spacer and eventually create a foggy appearance in double pane windows. Modern vinyl windows use less conductive materials and have thermal breaks that resist this transfer of hot and cold. They also use argon or krypton gas between the panes, which further reduces energy loss.
These advances also limit the amount of sound that can transfer between your living spaces. This will help you focus on work and rest without being disturbed by the noise of railroad tracks, busy roads and neighbors.
Durability
Windows are essential to a home’s beauty, function and feel. They’re not just decorative and provide a visual appeal to the home, they also help regulate temperatures, reduce noise and protect the environment from harmful UV rays. However, window repair or replacement can be costly. It’s important to understand what factors influence the price of a new window before making a purchase.
Double pane windows are more durable than single-pane windows. They can withstand harsh weather conditions and are less susceptible to condensation. This makes them a wise investment for homeowners looking to increase the longevity of their home.
Double-pane windows have two glass panes with a layer of air or inert gas between them to provide insulation. This helps to reduce the transfer of hot or cold air from outside, which can significantly decrease energy costs. Moreover, a double-pane window can save up to 24 percent of energy costs in winter and 18 percent in summer.