The first time I compared aluminum double hung windows, I felt frustrated. Every supplier promised durability and design, but the differences weren’t clear. It was hard to tell who was worth trusting.
That confusion pushed me to dig deeper.
Over time, I researched manufacturers, asked for feedback from builders, and paid attention to how windows performed in real projects. Those experiences taught me which suppliers live up to their claims.
That’s why I put this review together. It highlights 7 aluminum double hung window manufacturers, with a clear look at their strengths and differences.
By the end, you’ll have a reliable comparison you can actually use to find windows that balance quality, style, and long-term value.
So let’s get down to it!
Quick Comparison Chart
Here’s a glimpse at the essentials. A fast way to compare each manufacturer before you dive into the deeper breakdowns.
| Manufacturer | Location | Core Products | Certifications / Reputation | Limitation / Not Ideal For | Best For |
| YKK AP America | Georgia, USA | Aluminum double-hung, fixed, curtain wall, entrance doors | AW-50 rated, strong U.S. presence | Higher costs and longer lead times | Large commercial and institutional projects |
| Quaker Windows & Doors | Missouri, USA | K200, V250, E500 double-hung, M-Series commercial | NAFS ratings, FBC approvals | Not all lines are impact/AW rated | Versatility across residential to commercial |
| Vallisco | Shanghai, China | Double-hung, thermal-break, insulated, curtain wall | Export-ready, OEM customization | Certifications vary by project | Factory-direct customization and OEM |
| EFCO (Apogee) | Missouri, USA | HX45 double-hung, fixed, curtain wall, entrance systems | AW-rated, trusted for institutions | Mainly geared to large projects | Institutional, government, and healthcare builds |
| Kawneer (Arconic) | Georgia, USA | OptiQ series double-hung, fixed, curtain wall, storefront | AW-rated, hurricane/impact options | Catalog is vast, can overwhelm smaller buyers | Enterprise-scale and façade integration |
| Crystal Window & Door Systems | New York, USA | Series 2600 DH tilt, fixed, vinyl, curtain wall | AAMA CW, NFRC listed | Service quality varies by region | Mid-size projects needing U.S. plants |
| Winco Window Company | Missouri, USA | 4500 series double-hung, historic replication, fixed, specialty | AAMA, NFRC certified, historic expertise | Longer lead times due to customization | Historic and specialty projects |
Now that you’ve seen the quick snapshot, let’s move into each manufacturer’s story in detail.
1. YKK AP America
YKK AP America was founded in 1991 as the U.S. subsidiary of Japan’s YKK Group. The company is headquartered in Atlanta, Georgia, with a major manufacturing plant in Dublin, GA, and employs thousands across its operations.
Over the past three decades, YKK AP has grown into one of the most recognized aluminum system providers in North America. They are known for architectural-grade windows, curtain walls, and doors built for long-term reliability and performance.
Product Range
- Double-Hung Windows: The YVS 400 TU series comes in single- and double-hung options. These products integrate seamlessly with fixed frames and meet rigorous AW performance ratings.
- Fixed Windows: Designed to coordinate with operable units, these windows keep a consistent appearance across large openings. They also improve insulation by pairing with thermal-break technology.
- Curtain Wall Systems: Built for wide glass spans in commercial buildings, these systems maximize daylight and visual appeal. They also improve structural performance in high-rise and institutional projects.
- Entrance Doors: Heavy-duty aluminum doors designed to match window and façade systems. They are commonly used in commercial spaces requiring strength and durability.
Manufacturing & Supply Chain
YKK AP produces in Georgia and distributes across the United States. Many products feature thermal breaks plastic or resin barriers inside aluminum frames that reduce heat transfer and prevent condensation.
Customer Experience & Support
- Technical Assistance: Engineers and reps provide detailed design and specification help. They often work directly with project teams on performance requirements.
- Installation Resources: Documentation and manuals are comprehensive. This reduces guesswork for contractors and speeds up installation.
- System Integration: Support teams help align operable windows with fixed frames. This avoids mismatched aesthetics or uneven performance.
- Communication: In my experience, their response time is strong, though projects at this scale can involve longer lead times.
Final Thoughts
YKK AP America is a dependable choice for architectural-grade aluminum double-hung windows with proven durability and strong support. However, their pricing and delivery schedules are more in line with large commercial projects than quick-turn residential builds.
2. Quaker Windows & Doors
Quaker Windows & Doors was founded in 1949 and is headquartered in Freeburg, Missouri. Over the years, the company has grown from a small, family-owned operation into a national manufacturer with hundreds of employees and a broad distribution network.
With more than 70 years of industry history, Quaker has earned a reputation for blending craftsmanship with modern performance standards. They produce aluminum, wood, and vinyl systems, making them one of the few U.S. suppliers offering a truly diverse catalog under one roof.
Product Range
- K200 Double-Hung Series: Built for light commercial and residential use. These windows offer dependable performance at a more accessible price point.
- V250 Double-Hung Series: Designed as a mid-tier aluminum window line. They provide improved thermal efficiency and a sleeker profile.
- E500 Double-Hung Series: This series is aimed at higher-performance projects. It carries advanced ratings for strength and weather resistance.
- M-Series Aluminum: A commercial-grade family that includes double-hung options. These products meet rigorous AW ratings suitable for demanding applications.
Manufacturing & Supply Chain
Quaker operates out of Missouri, with a modern plant capable of producing large runs across multiple material types. Their supply chain is U.S.-focused, giving them the ability to offer shorter delivery times compared to import-reliant manufacturers. Some lines also carry Florida Building Code (FBC) approvals, an important standard for hurricane-prone regions.
Customer Experience & Support
- Technical Support: Quaker provides detailed specifications and architectural resources. I’ve found their documentation straightforward and easy to use.
- Installation Guides: Their manuals are clear, making contractor training smoother.
- Sales & Service Teams: Regional reps respond quickly to inquiries. This makes it easier when you’re narrowing down product options.
- After-Sales Service: They offer warranty coverage and troubleshooting help, though response times can vary by region.
Final Thoughts
Quaker Windows & Doors is a versatile option, offering multiple aluminum double-hung series to match different budgets and performance needs. However, not every series meets impact or AW ratings, so you’ll need to match the right product family to your project requirements.
3. Vallisco
When I first learned about Vallisco, what caught my attention wasn’t just their product list it was the way they positioned themselves. They don’t chase one-off sales; instead, they focus on supplying complete projects, which tells you they’re serious about long-term partnerships.
Vallisco was officially registered in 2024 as a subsidiary of Qeeka Home, but their history stretches back 24 years. Qeeka Home entered the doors and windows business in 2007, later acquiring a factory in 2019. Today, Vallisco operates independently from Shanghai, with its head office in Jiading District. Backed by its own manufacturing base, the company has grown into a name that serves both domestic and international projects.
Product Range
- Aluminum Double-Hung Windows: A two-sash design where both panels slide vertically. This gives better airflow and makes cleaning more convenient compared to single-hung windows.
- Thermal Break Aluminum Windows: Frames with insulating barriers that cut down on heat transfer. These are ideal for projects requiring stronger energy efficiency.
- Soundproof and Insulated Glass Windows: Windows designed to reduce outside noise and improve indoor comfort. Especially useful in busy or noisy environments.
- Curtain Wall and Commercial Windows: Large-scale aluminum framing systems for commercial buildings. They can be paired with residential products for a consistent look.
Manufacturing & Supply Chain
Vallisco owns its factory, giving them direct control over sourcing and production. Their main markets are Southeast Asia and Europe, and they also accept orders from other places. The company manages packaging, freight, and customs support, which makes international ordering easier for buyers.
Customer Experience & Support
- Communication Channels: Orders can be discussed through direct company contacts, and responses are usually prompt.
- Customization: Clients can request OEM (Original Equipment Manufacturer) services, meaning products are produced under the client’s brand.
- After-Sales Service: Vallisco provides support for product performance issues. In my experience, they respond quickly when technical clarifications are needed.
- Documentation: They supply standard product specs, with additional details available on request for larger projects.
Final Thoughts
Vallisco stands out for factory-direct customization and global shipping support, making them flexible for a wide range of projects. However, certification requirements can differ by market, so it’s important to confirm compliance before committing to large orders.
4. EFCO (an Apogee brand)
EFCO has been producing aluminum windows since 1951, with its headquarters and main plant in Monett, Missouri. The company is now part of Apogee Enterprises, a major name in architectural building products across North America.
Over the decades, EFCO has focused on serving schools, hospitals, government buildings, and commercial projects. Their reputation is built on providing windows and façade systems that can handle high performance requirements while meeting architectural standards .
Product Range
- HX45 Double-Hung Windows: Thermal-insulated and rated for architectural performance. These are designed for projects where energy efficiency and durability matter most.
- Fixed Windows: Engineered to match operable units, creating consistent design across façades. They also improve building envelope performance.
- Curtain Wall Systems: Structural aluminum framing for large glass spans. Often specified in commercial towers and institutional projects.
- Entrance and Specialty Doors: Heavy-duty doors that integrate with EFCO’s window systems. These create a unified façade package.
Manufacturing & Supply Chain
EFCO’s main production hub is in Missouri, supported by a national distribution network. Their windows often carry AW ratings, which indicate the highest level of testing for air leakage, water penetration, and structural load. From my perspective, that kind of certification gives confidence when projects demand reliability beyond residential-grade specs .
Customer Experience & Support
- Technical Support: Engineers work closely with architects to tailor product choices. I once saw how their rep walked a design team through multiple scenarios, which helped avoid costly mistakes.
- Documentation: Specifications and test data are detailed, reducing uncertainty during bidding.
- Integration Support: Staff ensure curtain walls and windows coordinate properly.
- Responsiveness: Communication is consistent, though larger projects may take longer to resolve.
Final Thoughts
EFCO is an excellent option for aluminum double-hung windows when architectural-grade performance is required. However, because they primarily serve institutional and government projects, smaller buyers may find it harder to access their products without going through formal bidding or approved distributors.
5. Kawneer (Arconic)
Kawneer has been part of the U.S. building industry since 1906, making it one of the oldest aluminum façade and window manufacturers. Headquartered in Norcross, Georgia, the company operates multiple plants across North America and is backed by Arconic, a global leader in lightweight metal engineering.
Through more than a century of operation, Kawneer has helped shape modern architecture, from high-rises to institutional projects. They are known for producing integrated systems—windows, curtain walls, and framing—that combine function with design flexibility for large-scale builds .
Product Range
- OptiQ AA®5450 Series: Offers both single- and double-hung aluminum windows. These units are engineered for energy efficiency while maintaining a slim, modern profile.
- Fixed and Projected Windows: Designed to match operable products for cohesive façades. These improve visual consistency and thermal performance.
- Curtain Wall Systems: Structural aluminum frameworks supporting wide glass spans. Often used in commercial and office towers for daylighting and exterior aesthetics.
- Storefront and Entrance Systems: Durable framing and door solutions that integrate with window products. Built for high-traffic use and long-term strength.
Manufacturing & Supply Chain
Kawneer’s U.S. operations include several regional manufacturing sites, which help shorten delivery times for domestic projects. Their systems frequently carry AW ratings (architectural-grade certification) and include impact-resistant designs for hurricane zones. I once reviewed a project where Kawneer’s regional supply made a noticeable difference the contractor got faster delivery compared to import-dependent competitors.
Customer Experience & Support
- Design Assistance: Kawneer’s technical team helps with system selection and specification.
- Documentation: Detailed product guides and test results are readily available.
- Integration: Their support ensures windows align with curtain walls and storefront systems.
- Communication: Regional offices improve responsiveness, though navigating such a large catalog can feel overwhelming at first.
Final Thoughts
Kawneer is a strong choice if you need aluminum double-hung windows that integrate into larger façade systems. However, because their catalog is vast and heavily commercial, smaller buyers may struggle to identify the right product line without technical guidance.
6. Crystal Window & Door Systems
Crystal Window & Door Systems was founded in 1990 in Queens, New York. From a small startup, the company has expanded into a national manufacturer with multiple plants in New York, Pennsylvania, Illinois, Missouri, and California .
With more than three decades of growth, Crystal now employs hundreds of staff and serves a wide range of commercial and residential projects. They’ve gained recognition for producing aluminum and vinyl windows that meet rigorous performance ratings while keeping production rooted in the U.S. .
Product Range
- Series 2600 Double-Hung Tilt Windows: A heavy commercial aluminum line with thermal-break technology. This design improves insulation and allows both sashes to tilt inward for easy cleaning .
- Fixed Windows: Built to complement operable units, these windows deliver consistent aesthetics across a building façade. They also strengthen the building envelope against air and water penetration.
- Vinyl Window Lines: Aimed at residential projects, these offer affordable performance and reduced maintenance. Their insulated frames make them energy-efficient.
- Curtain Wall and Commercial Frames: Structural framing systems for larger projects. These integrate with Crystal’s window products to provide complete building solutions.
Manufacturing & Supply Chain
Crystal manufactures across five U.S. states, which help shorten delivery times for regional projects. Many of their aluminum double-hung models carry AAMA CW ratings and are listed with the NFRC (National Fenestration Rating Council) for thermal performance .
Customer Experience & Support
- Technical Guidance: Engineers help contractors understand performance ratings and select the right models. I recall one case where their rep explained CW versus AW ratings in plain terms, making the decision much easier.
- Installation Resources: Manuals and drawings are detailed, helping reduce mistakes on site.
- Service & Warranty: Offers standard warranty coverage with follow-up service available.
- Responsiveness: Regional offices improve communication, though support levels can differ depending on location.
Final Thoughts
Crystal Window & Door Systems is a practical choice if you want aluminum double-hung windows backed by a strong U.S. manufacturing footprint. However, since service quality may vary by region, it’s worth checking local support before committing to a project.
7. Winco Window Company
Winco Window Company has been operating since 1935, with its headquarters in St. Louis, Missouri. From its early years, the company has focused on producing aluminum windows built for durability, gradually expanding to serve commercial, institutional, and restoration projects across the U.S. .
What I’ve always appreciated about Winco is how they manage to keep historic aesthetics intact without sacrificing performance. On one restoration project I reviewed, the windows looked like they had always belonged there, yet they carried modern certifications for energy efficiency and weather resistance. That balance of tradition and technology is where Winco stands out.
Product Range
- 4500 Series Double-Hung Windows: Heavy-duty aluminum windows designed for schools, offices, and hospitals. They combine strength with thermal performance for demanding environments.
- Historic Replication Windows: Custom aluminum products that replicate original window profiles. These allow older buildings to retain character while meeting code requirements.
- Fixed and Projected Units: Created to match operable systems for consistent design. These provide flexibility when you need both ventilation and sealed openings.
- Specialty Windows: Includes acoustic-rated and blast-resistant models. These are aimed at government and institutional projects requiring advanced safety features.
Manufacturing & Supply Chain
Winco designs and fabricates its products at its Missouri headquarters. Many of their models are tested and certified by AAMA and the NFRC, which means they meet strict standards for structural strength, air infiltration, water resistance, and thermal performance.
Customer Experience & Support
- Architectural Guidance: Specialists assist with design, engineering, and compliance.
- Documentation: Provides detailed CAD drawings and technical sheets for project planning.
- Historic Expertise: Their reps have deep knowledge of replication needs, which helps streamline approval processes.
- After-Sales Service: Warranty and follow-up support are available, tailored to project requirements.
Final Thoughts
Winco Window Company is an excellent fit for aluminum double-hung windows in historic or specialty projects. However, their emphasis on customization often results in longer lead times compared to manufacturers offering standard catalog models.
Conclusion
You’ve just seen seven of the strongest aluminum double-hung window manufacturers. Each one offers different strengths, from historic design to large-scale commercial solutions.
I remember how confused I felt when I first compared suppliers.
This guide is the list I wish I had back then. Now it’s in your hands. Start your project with confidence, and don’t let hesitation slow you down.
Which of these manufacturers do you see fitting your needs? Contact Vallisco today and let’s talk about your options.
