Expert remodeling
Window Installation & Replacement in Westchester County, NY
40 Years of Experience
Certified Professionals
Superior Workmanship with Proven Reputation
Stress-Free Process
Thermo-Seal Windows, Siding & Roofing, Inc.
Energy‑Efficient Window Upgrades for Homes Across Westchester County
If you’re looking for reliable window replacement in Westchester County, NY, Thermo-Seal has been the trusted name for over 40 years. We specialize in installing high-performance, energy-efficient windows that enhance both comfort and curb appeal. Whether you're in White Plains, Scarsdale, or Tarrytown, our window solutions are tailored to Westchester’s varied home styles and seasonal climate.
All installations are completed by our in-house, factory-trained professionals—never subcontractors—so you can count on expert craftsmanship from start to finish. If your current windows are outdated, drafty, or difficult to operate, we’ll deliver a seamless replacement process and long-term results.
Thermo-Seal Exterior Remodeling
Complete Window Replacement Services in Westchester County That Boost Comfort & Curb Appeal
From excessive energy bills to leaky, aging frames, window issues are common in Westchester County homes. Thermo-Seal addresses these problems with full-service window replacement, using materials and designs that are built to perform in the Northeast climate.
We install trusted brands like Andersen, offering a wide variety of window types and styles to match everything from historic colonials to modern builds.
✔ In-house professionals handle every phase of the installation
✔ Windows designed for Westchester’s weather and architectural diversity
✔ Multiple styles and materials to match your home’s needs and design
Why Westchester County Homeowners Trust Thermo-Seal for Window Replacement
Since 1985, Thermo-Seal has completed more than 20,000 exterior projects—and homeowners throughout Westchester County continue to choose us for our commitment to quality and reliability.
Why Westchester residents choose Thermo-Seal:
✔ Andersen Certified Contractor – Recognized for top-tier window installation
✔ No Subcontractors – Our full-time crew ensures consistent workmanship
✔ A+ BBB Rating – Supported by decades of customer satisfaction
✔ Durable Products – Built to withstand the seasons in Westchester
✔ Improved Energy Efficiency – Keep your home comfortable and costs down
From Yonkers to Yorktown, our window installations bring both style and performance to homes throughout the region.
Window Replacement in Westchester County That Solves Real Homeowner Problems
Outdated windows can create more than just a cosmetic issue—they can lead to high energy costs, interior discomfort, and even moisture damage. Thermo-Seal’s window replacement services in Westchester County are designed to solve these common concerns.
✔ Cold Drafts? Our insulated windows improve temperature control year-round
✔ Broken or Hard-to-Use Windows? We install easy-operating, modern options
✔ High Energy Bills? Our energy-efficient glass helps cut monthly costs
✔ Too Much Street Noise? Multi-pane solutions help create a quieter home environment
Thermo-Seal installs windows in Westchester County that improve your home’s appearance, energy efficiency, and overall comfort.
Schedule Your Free Estimate Today
Ready to transform your home’s exterior with expert remodeling that lasts? Contact Thermo-Seal today for a free in-home estimate and experience why thousands of homeowners across New York and Connecticut trust us for windows, siding, roofing, doors, and more.
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Service Area
Services We Offer:
Upgrade Your Home Now & Pay Later – Interest Free!
For a limited time, enjoy convenient financing with 0% interest for up to 25 months.
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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