The quality of Pella® - The features you desire When you buy Pella® products, you’re not solely receiving their superior quality and durability, you’re gaining the benefits of a company with a commitment to protecting the environment. All Pella products meet or exceed ENERGY STAR® certification in all states, making your room both comfortable and efficient. Numerous Pella products also feature allergen reduction technology to provide protection from dust, pet dander and other allergens. As a result, you will enjoy 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 our products are ENERGY STAR® certified in the U.S., and we continuously are working to develop the most efficient glass options to help save energy and save you money on your energy bills. More about Energy Efficiency Cleaner air with Pella allergen reduction technology Cleaner air with Pella allergen reduction technology Our between-the-glass window fashions can greatly cut down the allergens in your home. Pella’s one-of-a-kind technology is available on lots of Pella windows and even some of our doors. Explore this page to learn the benefits of Pella’s allergen reduction technology. More about Allergen Reduction Schedule Now!