Business Details
44 Years
experience
Custom Windows & Doors for Commercial and Residential Buildings
Since 1982, Kelly Window Systems has been a trusted leader in manufacturing and installing high-performance windows and doors for commercial and residential properties. Our team brings 35 years of expertise to every project, offering tailored solutions for new construction and renovations. We combine advanced engineering with meticulous craftsmanship in our 40,000-square-foot facility, ensuring durability and aesthetic appeal. Our specialists provide expert consultation, guiding clients through product selection and installation processes with precision. We prioritize customer satisfaction through seamless project execution, meticulous cleanup, and post-installation support.Our commercial-grade aluminum systems, including the Vanguard Series with triple-lock security, meet rigorous performance standards. For residential clients, we offer energy-efficient vinyl windows that enhance home value and comfort. Backed by industry-leading glass technologies like Duraseal spacers, we deliver solutions that reduce energy costs and condensation. Our portfolio includes large-scale projects like schools and apartment complexes, completed with minimal disruption to occupants. With a proven track record of excellence, we remain committed to innovation, quality, and personalized service that exceeds client expectations.
Services
Commercial Windows
Residential Windows
Glass Options
Window Installation
Customer Service
Details
- Year established: 1982
Highlights and features
- We offer 35+ years of specialized expertise in window and door systems.
- Our state-of-the-art facility ensures precision manufacturing six days a week.
- Triple-locking security features in commercial window systems for enhanced safety.
- Expert project coordination minimizes disruption during installations.
- We provide certified glass performance data to inform client decisions.
What people say
Outstanding work quality
Minimal disruption during installation
Energy efficiency improvements
Professional and responsive team
Timely project completion
Services
Commercial Windows
We manufacture and install heavy-duty aluminum windows for commercial buildings, featuring thermally broken extrusions and triple-locking systems. Our Vanguard Series meets strict performance standards for security and durability. These systems reduce energy costs through advanced insulation technologies while maintaining aesthetic flexibility for architectural designs.
Residential Windows
Our vinyl replacement windows combine energy efficiency with low-maintenance durability, available in multiple series for different home styles. Featuring easy-clean mechanisms and customizable options, these windows enhance property value while reducing heating and cooling expenses through optimized glass performance.
Glass Options
We offer high-performance glass units with Low-E coatings, solar reflectance properties, and Duraseal spacers to minimize heat transfer. Custom configurations include insulated units with gas fills and decorative muntin bars, balancing energy efficiency with aesthetic customization for both residential and commercial applications.
Window Installation
Our installation process prioritizes precision and minimal disruption, with scheduling flexibility for occupied spaces. Crews complete projects efficiently while maintaining clean work environments, ensuring proper alignment and sealing for optimal performance and longevity of window systems.
Customer Service
We provide end-to-end support from product consultation to post-installation follow-up. Our team coordinates project timelines, addresses concerns promptly, and guarantees satisfaction through transparent communication and quality assurance checks at every project phase.
Questions
What commercial window systems do you offer?
We offer the Vanguard Series with thermally broken aluminum and triple-locking security features, plus heavy commercial sliding doors designed for durability and performance.
Do you provide residential window replacements?
Yes, we offer vinyl replacement windows in multiple series (100, 400, 500) with energy-efficient features and easy-clean mechanisms for homes.
What glass options improve energy efficiency?
Our glass units include Low-E coatings, Duraseal spacers, and gas fills that reduce heat transfer by up to 9 degrees in winter and minimize condensation.
How do you handle large-scale projects?
We coordinate phased installations with minimal disruption, as demonstrated in school and apartment complex projects with hundreds of windows completed on schedule.
What areas do you serve?
We primarily serve New York City, Long Island, Queens, and Manhattan for both residential and commercial window installations.
Reviews (7)
Karen Schacor
Jul 10, 2021
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I purchased my window 7 years ago. The seal broke, and one phone call, and the window was replaced. I recommend them highly. love my window and love the customer service!
Ginny Cellucci
Jan 28, 2021
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My new windows are awesome! Very professional estimate Great price! Installation was flawless. I highly recommend this company!
Bill Goss
Mar 05, 2020
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My Dad turned me on to Kelly Windows after I told him the price I was quoted from Home Depot for a "special order window." Mind you there was nothing special about the size of the windows that I was looking for. They simply were out of stock. Hence, special order. Anyway, my Dad used Kelly at least 20 years ago and his windows were still going strong up until my parents moving four years ago. The price quote for 5 windows was just about what Home Depot wanted for 1 Andersen.
The quality is second to none. The customer service is great. I simply can not say enough good things about this company. It was worth my drive from up near West Point to Farmingdale. Thanks again Kelly Windows.
The quality is second to none. The customer service is great. I simply can not say enough good things about this company. It was worth my drive from up near West Point to Farmingdale. Thanks again Kelly Windows.
Heather G.
Jul 29, 2019
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Buyer beware. The warranty on product is only good for 15 years and does NOT transfer with sale of your home.
Michael C.
Jun 15, 2019
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I had to give a great review of Kelly Window Systems! Great installation of my windows today! Left the place cleaner than they found it! If you need windows this is where to go
Dani O.
Nov 25, 2018
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I was extremely impressed with Kelly Windows and would absolutely recommend them to anyone that needs their windows replaced. On the administrative side, their professionalism and responsiveness was top notch. On the installation side, their level of quality, flexibility, and overall attitude of putting the customer first was extremely appreciated. We had just renovated our condo and wanted to make sure we went with a company that was respectful and careful in our new place - and I'm so happy we went with Kelly Windows.
From the beginning consultation to the follow up at the end, it was first class service through and through. If you're researching window companies no need to waste any more time.you will not regret working with Kelly Windows!
From the beginning consultation to the follow up at the end, it was first class service through and through. If you're researching window companies no need to waste any more time.you will not regret working with Kelly Windows!
Bob Dowd
May 21, 2017
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Excellent service for high quality window construction and delivered on time as promised. Prices are very competitive with other brands.
