Expert remodeling
Window Installation & Replacement in Harrison, NY
40 Years of Experience
Certified Professionals
Superior Workmanship with Proven Reputation
Stress-Free Process
Thermo-Seal Windows, Siding & Roofing, Inc.
Window Replacement in Harrison That Enhances Comfort and Curb Appeal
Searching for reliable window installation in Harrison, NY? Thermo-Seal has been serving Westchester homeowners for over 40 years, offering energy-efficient window solutions that blend form, function, and durability. Whether you're near Silver Lake Preserve or within the town’s historic neighborhoods, we provide window replacements tailored to your home’s character and climate needs.
Every job is completed by our full-time, factory-trained professionals—never subcontractors—so you can expect precision, professionalism, and results that last. If your windows are drafty, aging, or no longer efficient, we offer Harrison homeowners solutions designed to boost comfort and long-term performance.
Thermo-Seal Exterior Remodeling
Full-Service Window Installation in Harrison for Year-Round Energy Savings
With Harrison’s hot summers and cold winters, poorly insulated windows can drive up your energy bills. Thermo-Seal installs high-quality replacement windows from brands like Andersen, engineered for year-round efficiency and comfort.
✔ Installed by our certified, in-house team
✔ Built to handle Harrison’s seasonal weather patterns
✔ Multiple styles and finishes to suit traditional and modern homes alike
Why Harrison Homeowners Choose Thermo-Seal for Window Replacement
With over 20,000 completed exterior projects since 1985, Thermo-Seal is a trusted name in Harrison for professional, dependable window installation. Our experience, service, and attention to detail set us apart.
Why homeowners in Harrison trust Thermo-Seal:
✔ Andersen Certified – Skilled in premium window products and installation
✔ No Subcontractors – All work is performed by our trained internal team
✔ A+ BBB Rating – Backed by decades of reliable customer service
✔ Long-Lasting Materials – Windows designed to withstand the elements
✔ Improved Energy Efficiency – Reduce heating and cooling costs all year
From Brentwood Road to Halstead Avenue, Harrison homeowners depend on Thermo-Seal for windows that make a difference.
Window Replacement in Harrison That Solves Common Home Concerns
Old or faulty windows can result in rising energy bills, indoor drafts, and exterior wear. Thermo-Seal’s window replacement services in Harrison are built to resolve these issues while adding value to your home.
✔ Feeling Drafts? We install sealed, insulated windows for improved comfort
✔ Struggling With Old Frames? Smooth, easy-to-operate replacements are available
✔ High Utility Costs? Upgrade to energy-saving windows that lower monthly bills
✔ Too Much Outside Noise? Multi-pane glass reduces sound for quieter living
Thermo-Seal installs windows in Harrison that look great, perform better, and improve your home from the inside out.
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:
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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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