The quality of Pella® - The features you want When you buy Pella® products, you’re not only receiving their high quality and durability, you’re receiving 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 space both comfortable and efficient. Numerous Pella products also include allergen reduction technology to give you protection from dust, pet dander and other allergens. Because of this, 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 strive to create the most efficient glass options to help save energy and save you money on your energy bills. More about Energy Efficiency Reducing allergens in your home Reducing allergens in your home Our between-the-glass technology 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. Click on this page to learn how much Pella technology can affect your air quality. More about Allergen Reduction Schedule Now!