Kelly Window Systems

Founded in 1982, Kelly Window Systems has established itself as a trusted leader in the design, manufacturing, and installation of premium windows and doors for commercial and residential properties. Our family-owned business, rooted in a legacy of craftsmanship dating back to 1959, operates from a state-of-the-art 40,000-square-foot facility in Farmingdale, Long Island. With decades of experience, we specialize in delivering tailored solutions for new construction and renovation projects, serving clients across Long Island and the tri-state area. Our commitment to quality is evident in every product, from our durable Vanguard Series aluminum systems to energy-efficient vinyl replacements and high-performance glass packages. We prioritize client satisfaction through expert consultation, seamless installations, and post-service support, ensuring every project meets exacting standards.

Our teams technical expertise, combined with a focus on innovation, has earned us a reputation for reliability and excellence. We pride ourselves on transparency, ethical practices, and a hands-on approach that makes working with us effortless from start to finish. Our portfolio includes large-scale commercial projects, such as schools and apartment complexes, as well as custom residential solutions that enhance comfort and aesthetics. Recognized for our dedication to customer-centric service, we continue to uphold the values that have defined our business for over four decades.