The quality of Pella® - The features you want When you purchase Pella® products, you’re not solely receiving their coveted quality and durability, you’re receiving the benefits of a company dedicated to protecting the environment. All Pella products meet or exceed ENERGY STAR® certification in all states, making your room both comfortable and efficient. Many Pella products also include allergen reduction technology to give you protection from dust, pet dander and other allergens. Because of this, you will have healthier air for your family to breath. Our commitment to energy efficiency Our commitment to energy efficiency Pella has been around for more than 80 years, and we’ve always been committed to the environment. All Pella windows and doors are ENERGY STAR® certified in the U.S. and we continuously are working to develop the most efficient glass options to help reduce your energy bills and consumption. More about Energy Efficiency Reducing allergens in your home Reducing allergens in your home Our between-the-glass window fashions can lead to a drastic allergen reduction in your home. This one-of-a-kind technology is available on numerous Pella windows and even some of our doors. Click on this page to learn just how much cleaner your air could be with Pella. More about Allergen Reduction Schedule Now!