How to Read Energy-Efficient Window Labels

Replacement Windows Atlanta GaEnergy efficient windows are an excellent choice for Atlanta area renovations.  Energy-Efficient windows are one of the top reasons homeowners choose to replace windows. What is the best way to choose replacement windows, doors, and skylights for homes and offices?  Windows may appear passive, but in reality they are always performing. They affect the flow of heat in and out of your home, as well as the amount of natural light, and this influences how much electricity you need to use to keep your home comfortable.  Saving time & money is always a key factor when selecting Replacement Windows Atlanta Ga.

The U-Factor Ratings Improves Energy Efficiency

U-Factor measures how well a product prevents heat from escaping a home or building. U-Factor ratings generally fall between 0.20 and 1.20. The lower the U-Factor, the better a product is at keeping heat in. U-Factor is particularly important during the winter heating season. This label displays U-Factor in U.S. units. Labels on products sold in markets outside the United States may display U-Factor in metric units.

Visible Transmittance (VT) measures how much light comes through a product. VT is expressed as a number between 0 and 1. The higher the VT, the higher the potential for daylighting.

Air Leakage (AL) measures how much outside air comes into a home or building through a product. AL rates typically fall in a range between 0.1 and 0.3. The lower the AL, the better a product is at keeping air out. AL is an optional rating, and manufacturers can choose not to include it on their labels. This label displays AL in U.S. units. Labels on products sold in markets outside the United States may display AL in metric units.

dunwoody energy efficient windows savingsSolar Heat Gain Coefficient (SHGC) measures how much heat from the sun is blocked. SHGC is expressed as a number between 0 and 1. The lower the SHGC, the more a product is blocking solar heat gain. Blocking solar heat gain is particularly important during the summer cooling season in hot Southern climates. By contrast, people in Northern climates may want solar heat gain during the cold winter months to lessen the cost of heating the home.

Window Installation Makes a Difference Energy Conservation

It is also important that you choose a reputable contractor to install the windows. The installation will also make a huge difference in how well your home is able to conserve energy. Make sure that the contractor who is installing the windows seals the windows properly at the building envelope.  Call Jeff today for more information when shopping for Replacement Windows Atlanta Ga 770-318-8514.