Energy Efficient Replacement Windows + Doors

What are Energy Efficient Windows?

Energy efficient windows are built with the right materials and glass to reduce the amount of solar heat that enters a home in summer and retain heat in winter. Different types of glass coatings are suited for different climates. Marvin Replacement has four types of glass coating options: Low E1, Low E2, Low E3, and Low E3/ERS for home energy efficiency. When comparing fiberglass vs. vinyl window materials, it’s important to understand each materials’ ability to limit heat transfer from the outside.

How to Choose the Best Energy Efficient Replacement Windows

Glass coatings, the number of glass panes, and a window’s gas fill can help you choose energy efficient windows. Ratings, like U-factor, SHGC, and VT can all help you make a wise decision on energy efficient windows and doors, too. ENERGY STAR certification uses U-factor and SHGC ratings. An NFRC logo can identify energy efficient windows quickly. You can also view window labels to view rating figures to see if the window will work well in your climate zone.

Efficiency in All Climates

Finding the best windows in hot or cold climates means picking the right glass coatings for your climate zone. Marvin Replacement’s Low E2 glass is 56% more efficient in summer and 49% more energy efficient in the winter. Low E3 glass is 70% more energy efficient in summer and 49% more energy efficient in winter.2