What Is It That Makes a Window “Energy Efficient”?

When you think of energy efficient replacement windows, do you automatically think of their energy savings versus the cost expense related to conventional windows? Several Omaha Window Replacement Companies advertise routinely ‘use energy efficiency’ as the driving adjective in their calls-to-action. We are often asked by customers what exactly makes one of these replacement windows more energy efficient? There are a number measurable static factors in the design of replacement windows that determine their energy efficiency such as the frame, materials and installation. Below, our team at Husker Siding, Windows and Roofing introduce what is an energy efficient window and what criteria should a consumer look for when replacing windows in the Omaha area.

What is Energy Efficiency regarding a Window?

When we talk about energy efficiency, we’re generally talking about insulation and heat transfer. The frames on these replacement windows have been designed to maximize insulation and minimize heat transfer. This is accomplished by using energy efficient materials like fiberglass and vinyl. You want the frame and glass on your windows to expand and contract very close to each other as this causes lower stress on the overall window and results in less leakage. Fiberglass resists warping and is known for its stability, strength and durability. The frame itself is normally left hollow or filled with an insulator like foam reinforced with numerous chambers that are sealed and therefore insulated pockets within the frame.

Tip: Vinyl frames are also known for their insulation qualities, and they’re generally very low-maintenance.

Does Glass Make A Difference in Your Window?

Yes, glass makes a huge difference as it makes up 85% or more of the product. Most energy efficient replacement windows are designed with two panes of glass versus one, and the space between the two panes is filled with either gas or air – which greatly improves its efficiency. The two gases that are typically used to fill the space between those two panes are either argon or krypton, which are odorless and colorless. Why? These types of gasses are better insulators than regular air.

Is Low Emissivity Important?

The coating that is used on energy efficient replacement windows has low emissivity or low e glass. Emissivity coefficients for some products vary with temperature. It’s the low emissivity of energy efficient windows that maintains heat inside your home during winter as well as cold in your home during summer.

When you’re in the market to replace your conventional windows with windows that are advertised as “energy efficient,” as an Omaha Windows Expert we suggest performing some research. Knowing what to look for goes a long way in choosing the right window.
Preview our most recent articles for more information to understand why energy efficiency is important. Call Husker Siding, Windows & Roofing (A Omaha Window Company) now for a free Windows Energy Efficiency Assessment. (402) 894-9525.