When considering a window replacement company near you, finding the right company can feel overwhelming. Particularly in the Northeast where the windows in your home endure a wide range of weather conditions throughout the year. Below freezing temperatures in the wintertime, summers with elevated temperatures and humidity require an energy efficient solution to keep your home temperate. The quality of your replacement window dictates the comfort, energy efficiency, and long-term durability. Many homeowners begin exploring replacement window options by comparing the pros and cons of established window companies. In this comparison, we will examine the differences between Advanced Window Systems and Renewal by Andersen, with a closer look at:
For more than 40 years, Advanced Window Systems has improved the comfort, beauty, and energy efficiency of homes throughout Connecticut and Massachusetts. The company provides high-quality replacement windows backed by expert craftsmanship, professional installation, and customer-focused service. AWS also offers premium windows backed by an industry-leading lifetime warranty, giving homeowners confidence and peace of mind.
What sets AWS apart from many full-service window installation companies is its commitment to customer satisfaction and personalized service. Homeowners can choose from a wide selection of window styles, colors, and finish options that enhance curb appeal while improving energy efficiency and comfort. Since 1978, AWS has built a reputation for high-performance replacement windows, expert installation in just one day, and lasting value. By combining premium glass, airtight seals, free service and repairs, and a comprehensive warranty covering glass and screens, AWS has become a trusted local choice for window replacement throughout Connecticut and Western Massachusetts.
Renewal by Andersen has served homeowners with replacement windows for more than 30 years. Andersen Corporation founded the company in Minnesota as its full-service replacement window division. Since then, Renewal by Andersen has grown into one of the largest brands in the window industry. Renewal by Andersen offers a cost-effective window system with professional installation.
Over the years, Renewal by Andersen has expanded throughout the United States as an established replacement window company. The brand has earned widespread recognition through its connection to Andersen Corporation and its extensive national presence.
Renewal by Andersen exclusively offers windows made with its proprietary Fibrex® composite material. The brand is focused on delivering premium replacement windows built on Andersen’s long-standing tradition of innovation and craftsmanship. Today, many homeowners choose Renewal by Andersen for its cost-effective products and the confidence that comes with a nationally recognized brand.
Advanced Window Systems (AWS) has earned a reputation as one of the leading locally-owned home improvement companies serving Connecticut and Western Massachusetts. The company takes a customer-first approach, pairing knowledgeable Residential Product Specialists with factory-trained installation professionals. This creates a seamless window replacement experience from consultation to completion.
Advanced Window Systems custom manufactures each window to fit every opening within 1/16 of an inch. This precise fit helps ensure optimal performance and long-lasting efficiency.
Homeowners and industry professionals alike consistently rank AWS to have one of the highest-quality vinyl windows available in New England. Known for their exceptional structural strength, energy efficiency, and thermal performance.
The company’s commitment to quality and customer satisfaction has earned widespread recognition. Advanced Window Systems has received more than 850 five-star Google reviews, maintains an A+ rating with the Better Business Bureau, ranks among the Qualified Remodeler Top 500, and has earned GuildQuality’s prestigious Guildmaster Award for Service Excellence.
Beyond its industry recognition, Advanced Window Systems stands behind its work with comprehensive lifetime warranty. The coverage protects both the products and the installation of the product. This commitment to quality, service, and long-term satisfaction provides added confidence that customers can rely on for years after their project is complete.
Renewal by Andersen (RBA) is recognized as one of the leading window replacement companies in the United States. It operates as the full-service replacement division of Andersen Corporation. Where they manage the entire window replacement process from consultation through installation and warranty support. Renewal by Andersen is best known for its proprietary Fibrex® composite windows, which it sells and installs through its network of franchises and affiliates. While Andersen Corporation offers a broad portfolio of window materials, Renewal by Andersen exclusively offers Fibrex® composite windows.
Renewal by Andersen supports its products with strong warranty protection. Homeowners receive a 20-year limited warranty on the glass and Fibrex® material, a 10-year warranty on hardware components, and a 2-year warranty covering installation workmanship. The company has built a strong reputation for quality craftsmanship, professional installation, and customer satisfaction. These qualities make it an attractive choice for homeowners seeking replacement windows from a well-known and established brand.
AWS offers premium vinyl replacement windows engineered for lasting performance, energy efficiency, and durability. AWS simplifies the process, creating a streamlined, worry-free experience and completing projects to the company’s high-quality standards, typically in one day or less.
Homeowners can choose from a wide selection of window styles, glass, colors, and design options to match their home’s aesthetic and preferences. AWS also offers upgrades and customization features, helping homeowners create solutions tailored to their needs.
Advanced Window Systems is committed to high-quality installations that help windows perform better in a variety of climates. Each window opening is measured multiple times for a precise fit and installed with multiple layers of airtight weather stripping to help prevent air leakage. Advanced triple-pane glass packages and insulated frame technology help minimize energy loss and improve year-round comfort. Many AWS window models meet or exceed ENERGY STAR® requirements for energy efficiency. These high-performance windows help reduce energy loss, improve indoor comfort, and may lower heating and cooling costs over time, making them a strong choice for homeowners seeking comfort, energy efficiency, and long-term value.
Renewal by Andersen offers replacement windows designed for durability, energy efficiency, and low-maintenance performance. As the full-service replacement window division of Andersen Corporation, Renewal by Andersen manages the entire replacement process, from the initial consultation through professional installation, providing homeowners with a convenient and seamless experience.
While Renewal by Andersen carries the Andersen name, it exclusively offers windows built from the company’s proprietary Fibrex® composite material. Fibrex® consists of approximately 40% reclaimed wood fiber and 60% polymer, creating a durable, low-maintenance frame. The material provides insulating properties that help limit energy loss through the frame. When paired with a high-performance glass package, Fibrex® can help make a home more comfortable throughout every season.
Advanced Window Systems engineers its replacement windows to provide long-term durability, energy efficiency, and dependable performance. The company manufactures its windows with a fusion-welded frame and sash, creating a rigid, seamless structure. This can reduce air and water entry points while maintaining structural integrity over time. The window frame delivers enhanced thermal performance through multiple chambers filled with high-density polyurethane insulation. This helps minimize heat transfer, reduce energy costs, and improve overall comfort through the years.
AWS windows are crafted from high-quality uPVC (unplasticized polyvinyl chloride) vinyl designed to resist rot, corrosion, peeling, and warping. Homeowners can personalize their window selection with decorative hardware finishes, six interior colors, seven standard exterior colors, and additional custom color options. These choices help give a home a more distinctive look that won’t deteriorate in harsh weather conditions like sun and snow.
The company also offers three grid styles for the windows including Flat, Contour, and Simulated Divided Lite (SDL) patterns. Features like these can enhance both traditional and contemporary architectural styles. Homeowners can choose from six standard interior colors, six standard exterior colors, and seven standard hardware finishes. Additional premium color and hardware options are also available, allowing you to further customize your home to match your personal style. Combined with durable, weather-resistant construction and a variety of window styles, Advanced Window Systems delivers replacement windows that offer long-term performance, energy efficiency, and enhanced curb appeal.
Renewal by Andersen engineers its replacement windows to deliver exceptional durability, strength, and long-term performance. The company constructs its windows using its proprietary Fibrex® composite material. Combining wood fiber with a thermoplastic polymer to create a strong, low-maintenance frame. Unlike painted window materials, Fibrex® blends the color directly into the material, helping prevent peeling, chipping, and fading over time. Fibrex® also resists the expansion and contraction caused by temperature fluctuations, allowing the window to maintain a tighter seal and greater structural stability throughout its lifespan. Additionally, the material’s low thermal conductivity helps reduce heat transfer through the frame. When paired with advanced glass packages, Fibrex® helps improve energy efficiency and enhance indoor comfort throughout the year.
In addition to the durability, RBA offers wide range of window designs and customization options. Homeowners can choose from nine interior colors, nine exterior colors and eight standard hardware finishes, with additional premium hardware options to complement your home style. Renewal by Andersen offers three grid styles including Full Divided Light, Grilles Between the Glass, and Interior Wood grids. Along with ten different grid patterns that can fit both traditional and contemporary homes.
When evaluating replacement windows, energy efficiency is often one of the most important considerations. While both Advanced Window Systems and Renewal by Andersen offer ENERGY STAR® rated products, key performance metrics such as U-factor, Solar Heat Gain Coefficient (SHGC), and air infiltration ratings provide a more complete picture of overall energy efficiency and thermal performance.
AWS windows are known for exceptional energy efficiency and industry-leading low air infiltration. According to NFRC-certified performance data, AWS windows have air infiltration ratings as low as 0.02 and a U-factor of 0.19. This helps minimize heat transfer into your home during summer and heat loss during winter. With an SHGC rating of 0.26, AWS windows can block about 74% of the sun’s heat, helping keep your home comfortable year-round.
Advanced Window Systems enhances energy efficiency with advanced glass technology. By applying a thin metal coating to the glass, heat reflects back into the home during winter and reduce solar heat gain during summer. Another feature that helps set AWS windows apart is their spacer system. Traditional metal spacers between the panes of glassare replaced with more innovative technologies that include a 10-layer Mylar vapor barrier. This can improve thermal performance and help reduce the potential for condensation around the edges of the glass. These features make Advanced Window Systems windows a strong choice for homeowners seeking exceptional energy efficiency, comfort and long-term performance.
Renewal by Andersen windows are designed to deliver outstanding energy efficiency and comfort. Their windows come with an air infiltration rate of 0.17, exceeding the standard for Energy Star rated windows by 43%, and making them almost 2 times more efficient. This means that the renewal by Andersen windows have seals and can reduce drafts while improving the comfort indoors. Their triple pane glass package offers a U-factor that ranges from 0.27 to 0.30, helping to minimize the amount of heat loss during the winter and reduce heat transfer in the summer. RBA windows additionally offer a SHGC rating that ranges from 0.20 to 0.40, allowing the windows to block a significant amount of solar heat and UV rays that could enter your home.
With these performance metrics we can see that Advanced Window Systems outperforms in both air infiltration and in thermal performance. Lowers numbers, like these can help reduce drafts and improve insulation and reduce your energy costs.
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