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Energy Efficiency

Windows and doors play a crucial role in a home’s overall efficiency. Simonton windows and doors deliver the ultimate in energy efficiency and thermal performance, helping to reduce your heating and cooling costs and keep your home comfortable all year long.

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ENERGY STAR® Partner Distinction

Homeowners look to the ENERGY STAR program to identify high-performance, energy-efficient products. Backed by the U.S. Environmental Protection Agency, ENERGY STAR provides guidance on how to save energy, save money, and protect the environment. As an ENERGY STAR partner since 1999, Simonton is dedicated to meeting the energy-saving standards the EPA has established for windows and patio doors to help lower household expenses, increase comfort, and reduce environmental impact.

What are the benefits of ENERGY STAR windows and doors?

Reduces heating and cooling costs.

Helps reflect damaging ultraviolet rays.

Enhances interior comfort throughout the year.

Protects the environment by reducing energy usage.

ENERGY STAR Windows and Doors

Simonton offers region-specific ENERGY STAR® glass packages designed to deliver optimal energy performance and comfort in any climate.

Learn More About ENERGY STAR

Explore Our 2024 Most-Efficient ENERGY STAR Windows

Select Simonton window styles are recognized as Most Efficient by ENERGY STAR in 2024. This distinction identifies products that offer cutting-edge energy efficiency and represents the best performing ENERGY STAR windows available.

Simonton 5500 Collection

Traditional window design defined by superior strength, a wide selection of styles, advanced energy efficiency, and exclusive features.

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Simonton 9800 Collection

Distinctive wood-look windows with a wide array of styles with design and energy-efficiency options that enhance its classic wood window appearance.

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The Most Energy-Efficient Choice For Your Home

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    Thermal Efficient Vinyl

    Our premium vinyl is an excellent insulator that reduces heat transfer and insulates against temperature changes.

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    Insulating Glass Unit

    Dual-pane windows create a sealed insulating glass unit that offers superior insulation compared to single-pane windows. Triple-pane glass provides even greater energy efficiency, insulation and sound reduction.

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    ProSolar® Low-E Glass

    ProSolar® Low-E glass helps keep warm air in during winter months. In summer, it helps deflect external heat, retains cooled air and blocks damaging ultraviolet rays.

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    Gas Fill

    Argon gas is sealed between the glass panes. This odorless, non-toxic gas is much denser than air, so it insulates better.

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    Spacer System

    Low-conductance spacer systems seal the glass panes to create an airtight unit that increases insulation and minimizes heat transfer through the window or door.

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    Triple-Pane Insulating Glass Unit

    Three panes of double-strength glass create two separate air spaces for maximum insulation, consistent interior temperature and energy savings.

AAMA Gold Label Certification. A Mark of Excellence.

The American Architectural Manufacturers Association (AAMA) Gold Label means your window and door have been manufactured and tested to the highest quality standards of one of the toughest certification programs in the industry.

Learn More About AAMA Gold

Air Infiltration

Windows must meet an air leakage standard of 0.30 cubic feet per minute or lower at wind speeds of 25 miles per hour.

Water Infiltration

Water infiltration is tested by applying water to the surface of the sample window or door at a rate of five gallons per hour per square foot, exceeding any rainfall rate ever measured in a natural storm.

Explore More of What Sets Simonton Apart

How to Buy

Simonton windows and doors are sold through our large network of trusted contractors, retail stores and distributor locations.