Installing energy-efficient windows allows your home to reduce its overall energy consumption and achieve savings on your monthly utility bills. However, you still need to choose the right type. As you browse through different window replacement products, make sure to consider only the ones that are ENERGY STAR® certified. They also feature components that help ensure energy performance, including the following:

Insulated Glass
The energy performance of replacement windows depends on the insulated glass. The term “insulated glass” doesn’t mean it has a foam or fiberglass insulation – rather, it pertains to the fact that it has at least two glass panels enclosing a sealed space that’s filled with inert gas. The glass acts as an insulating layer that helps slow down thermal transfer, keeping your interiors comfortable throughout the year.
Low-E Glass
Low-emittance or emissivity (low-e) is a type of window glass that’s treated with a special coating that blocks the sun’s ultraviolet (UV) radiation and heat selectively while allowing visible light through, much like clear glass. Installing windows equipped with low-E glass means you can enjoy sunlight throughout the day without ever worrying about your living spaces heating up or your fabrics and other interior items fading.
Gas Fill
The insulated glass of energy-efficient windows are further enhanced by the presence of gas in between the panes. During the manufacturing process, the airspace is filled with inert gas, which helps to reduce heat transfer more. The gas, which is usually a blend of argon and krypton, is not dangerous at all. It is non-toxic, odorless and colorless, which means you can invest in replacement windows with safety in mind.
At Renewal by Andersen® of Seattle, we offer a wide selection of high-quality window styles, including picture and double hung windows. Each window we offer utilizes advanced energy-efficient High-Performance™ Low-E4® glass and our exclusive Fibrex® frame and sash material. The combination of these materials creates energy-efficient windows that will help lower your heating and cooling bills.
To discuss your window replacement plans with us, give us a call at (206) 777-0954, or fill out our convenient online contact form. We serve residents in and around Bellevue.