Expert Window Installation & Replacement
Andersen Windows
Nature's Symphony
40 Years of Experience
Certified Professionals
Superior Workmanship with Proven Reputation
Stress-Free Process
Thermo-Seal Windows, Siding & Roofing, Inc.
Andersen Windows for Trusted Performance & Timeless Design
If you're searching for a high-quality window upgrade, Andersen windows are a proven choice—known for their durability, design versatility, and energy-conscious materials. As an Andersen Certified Contractor, Thermo-Seal offers professional installation of Andersen’s most popular window lines, ensuring you get a product built to perform.
With over 40 years of experience and a full-time, in-house team, Thermo-Seal provides expert window installations across New York and Connecticut—backed by the craftsmanship our customers have trusted for decades.
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Why Choose Andersen Windows for Your Home?
Andersen windows are among the most recognized names in residential windows, thanks to their focus on long-term performance and adaptable aesthetics. Their product lines offer a range of materials, including:
- Fibrex® composite, which combines the strength and insulation of wood with low-maintenance features
- Wood-clad windows, offering a traditional interior finish with weather-resistant exteriors
- Vinyl and fiberglass options in select product lines, for homeowners seeking low-maintenance performance
With a wide selection of operating styles—double-hung, casement, awning, picture, and custom shapes—Andersen gives you flexibility to match your home’s architecture and functional needs.
Professional Andersen Window Installation by Thermo-Seal
As an Andersen Certified Contractor, Thermo-Seal is trained in proper installation methods specific to Andersen’s products. This ensures your windows are installed to the brand’s specifications, maximizing their performance and long-term reliability.
Our process includes:
- A free, no-obligation in-home estimate
- Professional measurement and consultation
- Installation by our full-time team—never subcontractors
Whether you’re updating a single room or replacing every window in your home, our experienced crews deliver clean, precise installation with attention to detail.
From consultation to cleanup, we treat your home with the same care and respect we would our own.
Common Questions About Andersen Windows
Are Andersen windows energy efficient?
Yes. Many Andersen windows meet or exceed ENERGY STAR® guidelines, depending on the product line and glass options selected. Their Fibrex® material also contributes to thermal performance.
What window styles does Andersen offer?
Andersen offers a full range of styles, including double-hung, casement, gliding, bay, picture, and specialty shape windows across various product series.
Does Andersen make custom-size windows?
Yes, Andersen offers custom sizing and a range of design options to suit unique architectural needs.
Can I paint or stain Andersen windows?
Some Andersen lines, such as their wood-clad series, allow for interior staining or painting. Exterior finishes are typically low-maintenance and pre-finished.
What is Fibrex® made of?
Fibrex® is Andersen’s proprietary composite material made of wood fiber and thermoplastic polymer. It offers the strength and stability of wood with reduced maintenance.
Ready to explore Andersen window options for your home?
Schedule your free in-home consultation with Thermo-Seal today and see the difference professional installation makes.
Request A Free Estimate
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Contact Info.
Phone Number:
Email Address:
Showroom:
456 Sunrise Highway, Rockville Center NY 11570 - (516) 689-7214
Rye Corporate Office:
411 Theodore Fremd Avenue, Rye NY 10580 - (914) 635-3748
Stamford Office:
263 Tresser Blvd., Stamford, CT 06901 - (203) 990-1812
Melville Office:
68 South Service Road., Melville NY 11747 - (631) 710-6937
CLIENT REVIEWS
What Our Clients Are Saying About Us
Thermo-seal Windows provides exceptional customer service alongside high-quality products. Recently, I had the majority of my home's windows replaced by Aaron's team, and their performance was nothing short of impressive. They arrived on time, maintained a tidy work area, and dedicated themselves to ensuring a perfect installation of the windows.
Aaron and his team were amazing, from start to finish! They worked with us every step of the way and Aaron was always just a call or text away to answer any questions we had. The windows are perfect and we love them. We highly recommend working with Aaron and his team. They are professional, courteous and their work is top notch!
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