Expert Window Installation & Replacement
Window Repair in Nassau County
40 Years of Experience
Certified Professionals
Superior Workmanship with Proven Reputation
Stress-Free Process
Thermo-Seal Windows, Siding & Roofing, Inc.
Reliable, Certified, and Trusted Window Repair Experts in Nassau County
If your windows are hard to operate, letting in drafts, or showing signs of wear, Thermo-Seal offers dependable window repair services for homeowners throughout Nassau County. With over 40 years of experience and certifications from trusted manufacturers like Andersen and Harvey, we provide long-lasting repairs that restore your home’s energy efficiency, comfort, and safety. Whether you're dealing with condensation between panes, broken locks, or a leaky frame, our team brings practical, high-quality solutions to every job.
From the historic charm of Rockville Centre to the waterfront homes in Oyster Bay and the residential neighborhoods of Garden City, we proudly serve homeowners across Nassau County with expert window repair services tailored to local needs.
No more searching for window repair near me—Thermo-Seal delivers reliable service and premium workmanship trusted across the entire Tri-State area.
Thermo-Seal window Repair in Nassau County
Fixing the Problem, Restoring Your Peace of Mind in Nassau County
Window problems don’t just hurt your home’s curb appeal—they can also affect your energy bills and indoor comfort. A cracked pane, a deteriorating seal, or a stuck sash could be letting in air, moisture, or noise. That’s why our Nassau County window repair service is focused on fixing the real problem—not just applying a quick fix.
Thermo-Seal delivers repairs that last. Our certified technicians use components that meet or exceed original window specs, and every job is completed by our in-house team—not subcontractors.
What’s Included in Our Window Repair Service in Nassau County?
We begin every repair project with a thorough, no-pressure inspection. Based on what your Nassau County home needs, your window repair may include:
✔ Replacing foggy or broken double-pane glass
✔ Fixing jammed or damaged locks, handles, and tracks
✔ Repairing cracked or rotted sashes and frames
✔ Eliminating air leaks to restore energy performance
✔ Matching your existing window aesthetics with precision
You’ll receive straightforward recommendations to help you choose the best solution for your home and budget.
Who Benefits Most from Our Window Repair Services in Nassau County?
If your window frames are still in solid condition, full replacements may not be necessary. Our repair services are ideal for Nassau County homeowners who want improved performance without changing the original look of their windows.
Window repair is a great fit for:
✔ Preserving the character of older homes with modern upgrades
✔ Fixing unexpected storm or accident-related damage
✔ Boosting insulation and comfort without the cost of new windows
How Long Do the Benefits of Window Repair in Nassau County Last?
Our window repairs in Nassau County address more than surface damage. We look for deeper issues—like frame warping or seal failure—to ensure your windows perform at their best for years to come. Expect quieter interiors, easier use, and better temperature control after your repair.
All work is done using premium products from Andersen, Harvey, and Pella—and handled exclusively by our own expert team.
Why Homeowners Choose Thermo-Seal Over Other Window Repair Companies in Nassau County
Thermo-Seal has earned the trust of homeowners across Nassau County thanks to our professionalism, transparency, and consistent quality. From start to finish, we make window repair a smooth and reliable process.
✔ All work done by our in-house team—no subcontractors
✔ Certified Andersen and Harvey window repair professionals
✔ 40+ years of window repair experience
✔ A+ rating from the BBB and multiple Angi Super Service Awards
✔ Free, clear estimates with no pressure or surprises
We do the job right the first time—so you don’t have to think about it again.
Is It Cheaper to Repair a Window or Replace It in Nassau County?
Window repair is often the most cost-effective option—especially when the frame is still intact. Our Nassau County experts will assess the damage and let you know whether a repair or replacement makes more sense. If repair is viable, we’ll handle it efficiently. If replacement is necessary, we’ll explain your options honestly—with no upselling.
How Much Will It Cost to Repair My Windows in Nassau County?
Each home in Nassau County is different, and so is each repair. That’s why Thermo-Seal offers free in-home evaluations to clearly outline your repair scope and cost before any work begins. No hidden fees. No pressure. We also offer 0% financing for qualifying homeowners, making it easier to complete your repair without financial stress.
Frequently Asked Questions About Window Repair in Nassau County
How do I know if my windows need repair or replacement?
If your windows are difficult to open, leaking air or water, fogged between panes, or showing signs of frame damage, they may be eligible for repair. Our team will inspect them and let you know the best option based on performance, cost, and long-term value.
Can Thermo-Seal repair any brand of window?
We specialize in top-tier window brands such as Andersen, Harvey, and Pella, but we’re experienced with a wide range of window types and manufacturers. Our team can match materials and styles closely for a seamless result—even in older or custom homes.
How long does a window repair typically take?
Most repairs can be completed in a single visit. However, if specialized materials are needed, we’ll provide a clear timeline and keep you informed throughout the process. Our goal is to minimize disruption and maximize quality.
Will my repaired window be as energy-efficient as before?
Yes—if not more so. We use high-performance materials and proper sealing techniques to restore your window’s insulation and function. Many homeowners notice immediate improvements in energy efficiency and comfort after a repair.
Is there a warranty on your window repair work?
While exact warranties vary by product and repair type, Thermo-Seal stands behind every job with our commitment to quality and customer satisfaction. We’ll review your coverage during your estimate and ensure you understand all included protections.
Schedule Your Free Window Repair Estimate Today
Don’t let a damaged window compromise your home’s comfort, safety, or style. Call Thermo-Seal today or fill out our quick form to schedule your free in-home estimate. Discover why we’re the trusted choice for window repair near me in the Tri-State area.
📞 Call (866) 901-6808 or visit one of our offices in Rockville Centre, Rye, Stamford, or Melville to get started.
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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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