If your windows have seen better days, scheduling a replacement can help improve your home’s energy efficiency. According to the professionals at Shepard’s Glass of Kalispell, MT, inefficient windows can contribute to a large portion of your utility bills. To make an informed decision, you’ll need to have a firm grasp on industry terminology regarding energy value.

Below, these glass installation professionals discuss a few of the most important terms:

• U-Factor: The U-factor determines the rate of a window’s heat loss, or insulation value. The lower the U-factor, the greater the window’s resistance to heat flow. This is an important factor to look for when shopping for new panes, as it plays a major role in performance.
• Solar Heat Gain Coefficient: The SHGC reveals how much heat from sunlight is blocked by the window. The lower the SHGC, the more heat can be deflected.
• Visible Transmittance: The main purpose of a window is to allow light to pass through to the interior. The term visible transmittance refers to the percentage of light that finds its way inside. The figure is influenced by the glazing, glass type, and number of panes a window has.
• Air Leakage: The loss and gain of heat are influenced by the amount of air leakage a window allows through. The lower the air leakage number, the less air can pass through the cracks of a window. While window manufacturers are not required to include this number, it is an important factor when considering energy efficiency.

If you need a trusted contractor to complete a window installation in your home, count on the team at Shepard’s Glass. Serving residents throughout Kalispell, MT, this premier glass contractor provides a broad range of residential and commercial services, including installation, glazing, and repair. Contact them today at (406) 755-4540 or visit their website for more information about their services.