The quality of Pella® - The features you desire When you buy Pella® products, you’re not just 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 space both comfortable and efficient. Numerous Pella products also feature allergen reduction technology to protect you from dust, pet dander and other allergens. In turn, your home will have healthier air for your family to breath. Pella’s dedication to energy efficiency Pella’s dedication 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 strive to create the most efficient glass options to help reduce your energy bills and consumption. More about Energy Efficiency Innovation to reduce allergens in your home Innovation to reduce allergens in your home Our between-the-glass window fashions can drastically reduce the allergens in your home. Our one-of-a-kind technology is available on lots of 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!