The quality of Pella® - The features you need When you buy Pella® products, you’re not only 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 50 states, making your home both comfortable and efficient. Various Pella products also feature allergen reduction technology to protect you 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 We’ve been committed to providing environmentally friendly products since our beginning. 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 technology can greatly cut down the allergens in your home. Our one-of-a-kind technology is available on lots of Pella windows and even some of our doors. Explore this page to learn just how much cleaner your air could be with Pella. More about Allergen Reduction Schedule Now!