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Installing Premium Windows for Westchester County, NY, Homeowners

If your windows need an aesthetic or functional upgrade, turn to the experts at Thermo-Seal. We’ve proudly offered top-of-the-line windows for Westchester County, New York, homeowners since 1985, and our craftsmanship and expertise simply can’t be beat. We’d be delighted to add you to our long list of satisfied customers.

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Our Window Replacement Options

Thermo-Seal is pleased to offer our own line of custom windows, which is manufactured by our partner Harvey Building Products. We also install windows from Andersen and Pella, and we are an Andersen Certified Contractor. Our windows:

  • Are available in a variety of materials, including wood, thermoplastic, composite, and vinyl
  • Can be designed to fit virtually any opening – we install slider, garden, casement, picture, bay, bow, double hung, and completely custom window styles and shapes
  • Are backed by a 100% satisfaction guarantee and a limited lifetime warranty which covers defects or seal failures on all mechanical and vinyl components
  • Include energy efficiency features that can help reduce your heating and cooling expenses by up to one-third
  • Require minimal maintenance
  • Help reduce the infiltration of outdoor noise

Plus, no matter which type of windows you choose, you can rest assured that they will be installed with utmost care by our highly trained and fully insured installation technicians.

Contact Your Local Window Installation Experts Today

To learn more about our selection of windows or our installation services, contact Thermo-Seal today. We’ll be happy to provide a virtual or in-home estimate for your window project and go over our convenient financing options.

We make clients happy.

We Make it Easy

With customer service and craftsmanship that’s second-to-none, we make it easy
to achieve the home of your dreams.
Free, No Hassle Estimates Schedule a free in-home or virtual estimate. We’re here to help!
High Quality Products We offer the best products available, including our own brand of replacement windows.
Satisfaction Guarantee Our job is not done until you’re completely satisfied.

We've got connections.

We're certified by the industry’s leading manufacturers to offer a wide range of top quality options. View Our Credentials

Thermo-Seal Windows Siding & Roofing, Inc. is an A+ Rated BBB Accredited Business serving Westchester County, Rockland County, Nassau County, Suffolk County and Fairfield County. We offer multiple locations throughout the Tri-State Area to better serve our customers.

456 Sunrise Highway
Rockville Center, NY 11570
(866) 281-4567
Melville Office
68 South Service Road
Melville, NY 11747
(866) 281-4567
Rye Corporate Office
411 Theodore Fremd Avenue
Rye, NY 10580
(914) 925-3443
Stamford Office
263 Tresser Blvd
Stamford, CT 06901
(203) 663-3534