Expert remodeling
Window Installation & Replacement in Katonah, NY
40 Years of Experience
Certified Professionals
Superior Workmanship with Proven Reputation
Stress-Free Process
Thermo-Seal Windows, Siding & Roofing, Inc.
Energy-Efficient Window Solutions for Katonah Homeowners
Looking for dependable window installation in Katonah, NY? Thermo-Seal has been delivering expert window replacements for over 40 years, helping homeowners improve insulation, comfort, and curb appeal with top-tier products and precision in-house craftsmanship.
From classic colonials near the Katonah Village Historic District to modern homes on wooded lots, we install energy-efficient windows designed to match your home’s character while keeping your space warm in winter and cool in summer. With Thermo-Seal, your window upgrade in Katonah is built for long-term performance and tailored to the area’s seasonal climate.
Whether your windows are drafty, outdated, or no longer functioning properly, we offer custom solutions backed by manufacturer certifications and reliable warranties.
Thermo-Seal Exterior Remodeling
Full-Service Window Replacement in Katonah That Improves Comfort and Curb Appeal
Homeowners in Katonah deal with everything from energy loss and noise infiltration to outdated aesthetics. Thermo-Seal’s window replacement services directly address these issues with expertly installed, high-performance products—never subcontracted.
We use trusted brands like Andersen to deliver quality windows that enhance your home’s appearance while increasing comfort and efficiency. Every window is fitted to your home’s needs and installed by our full-time, factory-trained team.
✔ No subcontractors—just skilled in-house installers
✔ Products built to withstand Katonah’s seasonal weather
✔ Custom styles and finishes to suit your home's design
Why Katonah Homeowners Choose Thermo-Seal for Window Replacement
Thermo-Seal has earned a strong reputation in Katonah, NY, for expert window installation with attention to detail and customer satisfaction. With over 20,000 successful projects completed since 1985, we bring the experience and reliability that homeowners want.
Why Katonah residents rely on Thermo-Seal:
✔ Andersen Certified – Installation done to the highest manufacturer standards
✔ In-House Professionals – We never outsource your project
✔ Trusted Reputation – A+ rating from the BBB and consistent Angi Super Service recognition
✔ Built to Last – Our windows are made for durability, insulation, and low maintenance
✔ Energy Savings – Improved performance means lower heating and cooling bills
Whether you're near Jay Street or Bedford Road, Katonah homeowners trust Thermo-Seal for window upgrades that make a difference.
Replace Your Windows in Katonah to Solve Everyday Problems
Outdated or poorly performing windows can lead to comfort issues and rising energy costs. Thermo-Seal offers window replacements in Katonah that solve these common concerns with reliable, stylish, and high-efficiency options.
✔ Drafty Interiors? Our insulated window systems keep temperatures consistent
✔ Aging Frames? Choose modern, low-maintenance designs with improved longevity
✔ High Energy Bills? Our energy-efficient windows reduce waste and monthly costs
✔ Outside Noise? Multi-pane glass creates a quieter, more peaceful home
Thermo-Seal helps Katonah homeowners make smart window upgrades that deliver comfort, style, and value for years to come.
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.
Request A Free Estimate
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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