The quality of Pella® - The features you desire When you purchase Pella® products, you’re not solely receiving their superior 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 50 states, making your space both comfortable and efficient. Various 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. Pella’s dedication to energy efficiency Pella’s dedication to energy efficiency Our commitment to the environment has been around just about as long as our business. 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 you save 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 blinds and shades can greatly cut down the allergens in your home. This one-of-a-kind technology is available on many Pella windows and even some of our doors. View this page to learn how much Pella technology can affect your air quality. More about Allergen Reduction Schedule Now!