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Sustained Excellence.

Energy-Saving Products

Pella products conserve energy

Thanks to superior design, quality construction and innovative glass options, windows and doors manufactured by Pella help your home use less energy — saving you money on your monthly heating and cooling bills and reducing your carbon footprint.

Awarded the ENERGY STAR Most Efficient mark in 2015

Pella® 350 Series windows have been recognized as the Most Efficient of ENERGY STAR

Frequently asked questions about Pella’s energy-efficient products

Windows and doors are a major source of heat loss in a home. When heat escapes — or is allowed in during the summer — your home’s furnace or air conditioner has to work harder and use more energy to keep the temperature inside your house comfortable and consistent.

Pella® Architect Series® windows with triple-pane glass are 52% - 78% more energy-efficient than single pane windows*; Pella Designer Series® windows with triple-pane glass are 53% - 74% more energy-efficient than single-pane windows*; Pella 350 Series windows with triple-pane glass are 54%-83% more energy efficient than single-pane windows*; Pella 250 Series windows with triple-pane glass are 54%-77% more energy-efficient than single-pane windows.

*Improved window energy efficiency calculated in a computer simulation using RESFEN 5.0 default parameters for a 2,000-square-foot existing single-story home when comparing Architect Series, Designer Series, Pella 350 Series or Pella 250 Series windows with InsulShield® Advanced Low-E triple-pane glass with argon to a single-pane wood or vinyl window. For more details, see pella.com/methodology.

Insulating glass is made from two sheets of glass with airspace in between. Colorless argon gas is denser than air — it’s inserted in the airspace to further reduce heat transfer. This extra insulation helps keep the surface of the glass from getting too hot or cold — keeping your room more comfortable.

Pella’s multiple layers of Low-E (low-emissivity) coatings reflect heat energy. They reflect the sun’s rays away from your windows in the summer, helping to keep your home cooler. In cold weather, Low-E coatings reflect your home’s heat back into your room. The result is a more comfortable home, year round.

Low-E coatings also block the sun’s fading ultraviolet (UV) rays, protecting your furniture, window treatments and flooring from fade damage.

The frame material of your window or door plays an important role in how well the window or door insulates your home from outdoor cold or heat. For example, wood is an outstanding insulator — it insulates 1,800 times better than metal. Pella’s Duracast® fiberglass composite offers an insulating value similar to wood. Vinyl is less insulating in nature, but Pella’s vinyl windows and patio doors have air chambers inside the vinyl to increase its insulating ability. Aluminum does a poor job of insulating — it transfers the heat or cold into your room, so it can be uncomfortable to sit next to an aluminum window or door.

They add an extra layer of insulation between the glass, helping to keep your home warmer in winter and cooler in the summer.

Select Pella sliding patio doors feature our unique design that puts the sliding panel on the exterior — so the harder the wind blows, the tighter the seal.

The best-performing window is only as good as its installation. That’s why Pella uses trained installers and tested installation method for replacement window and door projects.

We test our windows and doors for air infiltration in state-of-the-art facilities to make sure they seal properly and meet or exceed industry performance standards.

In addition to ENERGY STAR, Pella products are recognized by respected and industry-leading third parties such as the GreenSpec® Directory from BuildingGreen, Inc.

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