Crafted by Pella, Certified by ENERGY STAR® ENERGY STAR is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy to help Americans support the environment through energy efficient products and activities. Since ENERGY STAR focuses on preserving energy, you’ll likely also save on your energy costs. All Pella windows and doors meet or exceed ENERGY STAR certification in every state. How does this benefit you? Not only might you experience a decrease in your heating and cooling costs, you’ll also help support the environment. Furthermore, you’ll enhance your home’s comfort since our ENERGY STAR certified glass blocks a majority of the sun’s ultraviolet rays. That means little to no fading for your window shades, carpet, furniture and walls. Look for the ENERGY STAR logo on our products as you browse through our site or Wellesley Showroom. You’ll find it located on the product’s NFRC label. Some of our products significantly exceed U.S. ENERGY STAR guidelines. Contact your Wellesley Showroom to learn more. Schedule Now!