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Business Details
36 Years
experience
Your Trusted Source for Custom Windows and Doors
Founded in 1990 by Thomas Chen, Crystal Window & Door Systems has grown from a modest operation in Flushing, Queens, to one of North America's largest window and door manufacturers. With five state-of-the-art facilities across the U.S. and over 800 employees, we combine 35 years of expertise with vertically integrated manufacturing to ensure end-to-end quality control. Our commitment to innovation and sustainability drives partnerships with architects, developers, and communities to create energy-efficient solutions.

We prioritize hands-on customer support, offering on-site training and tailored product recommendations to meet diverse project needs. Backed by affiliations with leading industry organizations, our family-run business remains rooted in its founding values of craftsmanship and community engagement.
Services
Aluminum Windows Vinyl Replacement Windows UPVC Passive Windows Custom Doors Energy-Efficient Solutions
Details
  • Year established: 1990
Highlights and features
  • We offer 35 years of expertise in custom window and door manufacturing.
  • Our vertically integrated process ensures end-to-end quality control.
  • We provide energy-efficient solutions for residential and commercial projects.
  • Our team offers on-site installation training and project-specific support.
  • We operate five U.S. manufacturing facilities for reliable regional service.
Associations and certifications
  • American Institute of Architects
  • National Fenestration Rating Council
What people say
Award-winning designs On-site training provided Energy-efficient solutions Customizable options Experienced team
Services
Aluminum Windows
Sleek aluminum windows combine structural resilience with modern aesthetics. Ideal for mid- to high-rise projects, these lightweight yet durable frames meet evolving building codes and energy standards. Customizable designs ensure seamless integration with contemporary architectural visions.
Vinyl Replacement Windows
Durable vinyl replacement windows offer superior energy efficiency for low-rise buildings. Their cost-effective insulation and easy installation make them ideal for single-family homes. Customizable shapes and sizes accommodate diverse renovation requirements while maintaining long-term performance.
UPVC Passive Windows
Engineered for thermal efficiency, UPVC passive windows minimize heat transfer through precision-engineered frames. These low-maintenance solutions reduce energy consumption in residential and commercial spaces, supporting sustainable building initiatives without compromising structural integrity.
Custom Doors
Tailored door systems combine security with aesthetic appeal. Aluminum and vinyl options feature advanced insulation technology to lower utility costs. Architectural enhancements like transoms and sidelights create distinctive entrances for residential and commercial properties.
Energy-Efficient Solutions
Our product line meets ENERGY STAR certification standards through advanced glazing and insulating technologies. From argon gas fills to low-E coatings, these solutions optimize thermal performance while reducing environmental impact across new construction and retrofit projects.
People
Thomas Chen
Founder
Thomas Chen founded Crystal Window & Door Systems in 1990 with a vision to revolutionize fenestration manufacturing. Under his leadership, the company grew into a top 25 North American window manufacturer while maintaining its Queens, NY headquarters.
Questions
What types of windows do you manufacture?
We produce aluminum, vinyl, and UPVC windows in various configurations including double-hung, slider, casement, and fixed designs for residential and commercial applications.
Do you offer energy-efficient options?
Yes, our product line includes ENERGY STARĀ® certified windows and doors featuring low-E glass, argon gas fills, and advanced thermal break technologies to optimize energy performance.
How can homeowners purchase your products?
Homeowners should contact an authorized Crystal dealer or call our toll-free line to locate a local distributor for window and door purchases and installations.
Are custom sizes available?
We specialize in custom solutions, offering windows and doors in non-standard dimensions to meet specific architectural requirements across all product lines.
Do you provide installation support?
Yes, our team offers technical guidance and on-site training for proper product installation to ensure optimal performance and longevity of our window and door systems.
What sustainability initiatives do you support?
We partner with architects and developers on green building projects, offering energy-efficient products and manufacturing processes designed to minimize environmental impact through reduced material waste and energy consumption.