Energy-efficient replacement windows promise energy savings and improved comfort. Of course, any window replacement manufacturer can claim this, so it’s important to know what features to consider. In today’s post, Renewal by Andersen® of Denver takes a look at what makes a replacement window energy-efficient.
The Energy Envelope
To better explain how energy-efficient windows work, let us first explain how windows work with the energy envelope, an enclosure that consists of the roof, exterior walls and all fenestrations — that is, entry doors, skylights and windows. With proper insulation, an energy envelope can slow down thermal transfer, which can help reduce indoor heating and cooling requirements, in turn resulting in energy savings.
Features of an Energy-Efficient Window
Windows, as well as other fenestrations, are where heat leaks typically occur. This is because traditional windows are usually equipped with single-pane glass that allows thermal transfer, which can result in heat loss during heating season and heat gain during cooling season, resulting in higher energy consumption. An energy-efficient window should have the following features:
- Insulated glass. Insulated glass consists of two glass panels separated by an air gap, which acts as an insulating layer by slowing down thermal transfer between interior and exterior surfaces. The gap can be optionally filled with an inert gas (usually a blend of argon and krypton) for enhanced insulation. This has proven to be effective that all Renewal by Andersen replacement windows come with dual pane High-Performance™ Low-E4® glass. They also feature coatings that block harmful UV rays and solar heat.
- Frames and sashes. The window frames and sashes need to be made of a nonconductive material, otherwise they would defeat the purpose of having insulated glass. While wood remains a great choice for window frames, it needs frequent maintenance in order to protect it against warping and moisture damage. Vinyl is a popular choice but it’s vulnerable to high heat. This is why Renewal by Andersen replacement window frames are made with an exclusive composite called Fibrex®. It combines the insulating properties of wood, the strength of extruded composites, and the low maintenance requirements of vinyl.
- Proper installation. Installation errors are among the main causes of window failure. This is why, even with the best replacement window features, you have to invest in skilled installers. With Renewal by Andersen, you can rest easy knowing that each one of our installers has undergone strict training and certification, with a two-year limited warranty installation coverage.
Renewal by Andersen® of Denver is the most trusted replacement window company serving customers in Denver and Colorado Springs. Give us a call at (303) 968-3287 or (719) 313-5403 to get started. You may also fill out our contact form to schedule an appointment.