The quality of Pella® - The features you desire When you buy Pella® products, you’re not just receiving their superior quality and durability, you’re getting the benefits of a company with a commitment to protecting the environment. All Pella products meet or exceed ENERGY STAR® certification in all 50 states, making your room both comfortable and efficient. Various Pella products also contain allergen reduction technology to give you protection from dust, pet dander and other allergens. As a result, your home will have healthier air for your family to breath. Pella’s dedication to energy efficiency Pella’s dedication to energy efficiency Pella has been around for more than 80 years, and we’ve always been committed to the environment. Every Pella product is ENERGY STAR® certified in the U.S., and we continuously work to provide 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 drastically reduce the allergens in your home. This one-of-a-kind technology is available on numerous 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!