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Energy Efficiency

Efficient windows and doors from Pella can reduce your utility bill and add comfort to your home. We’ve designed our products to deliver exceptional energy efficiency for savings and home comfort year-round.

What Impacts Energy Performance

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Low-emissivity (Low-E) glass is a glass coating that improves the energy efficiency of your windows and patio doors. In the winter, Low-E glass reflects heat back into the room, keeping it warmer. In the summer, it reflects heat away from your home, keeping it cooler. Additionally, this glass blocks most of the sun’s harmful UV rays, helping to prevent your carpet, furniture and window treatments from fading.