The ENERGY STAR label is a federally regulated symbol that displays a product’s efficiency in using energy. The label is most commonly seen on appliances and electronics, but can also be applied to homes and buildings. For homes, ENERGY STAR evaluates window performance through various ratings, all of which are based on the U-Factor. The U-Factor, or the rate of heat transfer, is just one of the ways in which ENERGY STAR rates windows. Other methods include the solar heat gain coefficient (SHGC), air leakage, visible transmittance, and condensation resistance.

If your home’s windows face the sun, installing replacement windows with a lower U-Value is even more important. Replacing old, inefficient windows with ENERGY STAR certified new ones can help you save money on your energy bills and make your home more comfortable throughout the year. We have partnered with Pella to ensure you not only get the Energy Star rating, but you get a high-quality window at an affordable price.