I once had a hotel client who thought all double hung windows were the same. That changed after a bad order caused weeks of delays and guest complaints.
That experience reminded us how important it is to choose the right manufacturer from the start.
I’ve worked with builders, hotel owners, and residential project teams across Southeast Asia and Europe. I’m not just sharing names, I’m sharing what I’ve learned from real projects and real results.
In this article, we’ll go over 7 double hung window manufacturers we believe are worth your time. You’ll see how each one compares in quality, price, and service, so you can make a clear decision.
Good windows don’t just look nice, they help you avoid problems later.
Let’s get started!
Quick Comparison
Choosing the right double-hung window manufacturer depends on your project’s size, design goals, and material preferences. Below is a clear comparison to help guide your selection:
| Manufacturer | Material Focus | Product Range | Innovation Features | Support Channels | Best For |
| Andersen | Fibrex, Wood, Vinyl | Wide (100, 400, A-Series, etc.) | Fibrex®, Smart Sensors | Dealer, Email, Phone | Full-home villas, hotels |
| Pella | Wood, Fiberglass, Vinyl | Reserve, Lifestyle, Impervia | Hidden Screens, Eco Options | Reps, Dealers, Email | Energy-focused villas, renovations |
| Vallisco | Aluminium | Tilt-turn, Sliding, Integrated | Custom Systems, OEM Options | Email, Project Chat | Large projects needing customization |
| Internorm | uPVC, Wood-Alu | uPVC, Timber-Alu, Sliding | I-tec Smart Tech | Partner Dealers, Email | Passive house builds, Europe-based villas |
| VEKA | uPVC Profiles | Profiles for fabrication | Multi-chambered, Recyclable | Regional Offices, Email | Fabricators, project sourcing teams |
| Boswindor | Aluminium, uPVC | Sliding, Guillotine, Smart Glass | Smart Glass, Fast Delivery | Email, WhatsApp, Phone | Fast turnaround hospitality builds |
| ViWinco | Vinyl | S-Series, Cambridge, OceanView | Tilt-n-Lock, DP-rated | Email, Phone | Vinyl window upgrades, small hotels |
Compare features, material strengths, and support options to match with your project needs. To read full reviews, continue to each manufacturer section below.
1. Andersen Corporation
Andersen is one of the oldest and best-known window manufacturers in the U.S.
They started in 1903 and are based in Minnesota. I’ve worked with many teams who trust Andersen, especially on larger villa and hotel projects. Their products are known for reliability. You’ll find their windows in homes, commercial buildings, and resorts.
They don’t just make windows, they also support builders and contractors with services, guides, and warranties. That’s why many clients keep choosing them again and again.
Product Line
- 100 Series: Made from Fibrex® composite. Great for humid or hot climates. Offers solid performance without the cost of full wood or aluminum.
- 400 Series: A mix of wood inside and vinyl outside. It’s durable and holds paint or finishes well. Often used in villas and high-end B&Bs.
- A-Series: Best for energy savings. Combines wood, fiberglass, and composite. Great if your project is in a cold or mixed-weather region.
- E-Series: Custom-focused line. You can choose colors, sizes, shapes. Good for architects or when design is important in your project.
Customer Support & After‑Sales Service
You can reach them by phone, email, or through their dealer network. Their website also has support tools.
From my experience, they respond quickly, especially if you work with an assigned rep or dealer. For larger orders, account managers help you through the process.
They offer warranties, training videos, and guides. If there’s a problem, they usually handle it well, but it depends on your dealer.
Quality Control & Assurance
- Raw Materials: Andersen tracks all raw materials, especially Fibrex and wood, to make sure everything meets environmental and durability standards before production.
- Manufacturing Standards: Their U.S. facilities follow strict guidelines for energy, safety, and material quality. Every unit is made to meet these factory standards.
- Testing Processes: Each product goes through thermal, wind, and water tests. This checks how well the windows hold up in different climates and conditions.
- Third-Party Audits: Independent agencies, like ENERGY STAR, verify Andersen’s claims. These audits confirm that products meet energy and safety codes in multiple countries.
- Defect Rates: Field reports and customer feedback show consistently low defect and failure rates, which means fewer callbacks and returns after installation.
Research & Development
- In-House Innovation: Andersen developed its Fibrex® material in-house. This composite frame combines wood and polymer for better strength and energy savings.
- Product Testing: New designs go through full testing before launch. Windows are checked for air leakage, glass strength, and weather resistance.
- Energy Focus: Their R&D team builds windows to meet modern energy rules. This helps lower long-term energy costs for hotels and homes.
- Design Updates: They update frame styles, grille patterns, and finishes based on design trends and customer input from building professionals.
- Smart Add-Ons: Some windows now include built-in sensors that track if they’re open or closed. This works well for smart villas and new buildings.
Final Verdict
Andersen is a strong fit for villas, hotels, and full-home projects that need dependable, energy-efficient windows with professional support. However, because of their higher pricing and the fact that support can vary by dealer, it’s best to work with their verified sales partners.
Reach Them
- Website: https://www.andersenwindows.com
- Headquarters: Bayport, Minnesota, United States
- Contact:
- Phone: +1 (800) 426-4261
2. Pella Corporation
Pella began in 1925 in Iowa. It grew from a small screen business into a top U.S. window and door maker. Pella works with builders, hotel teams, and villa projects. I’ve seen Pella perform on large projects in varied climates. Its innovation and long-term support help clients feel secure.
They supply materials for full building projects in Europe, Southeast Asia, and beyond. Their systems support energy standards and installer needs.
Product Line
- Reserve Traditional: Upscale wood double‑hung windows. Offers hidden screens, customizable finishes, and strong thermal performance. Ideal for higher-end hospitality projects.
- Reserve Contemporary: Modern style wood windows. Clean lines, minimalist design, good insulation, and tech-friendly options. Works well for modern villas or inns.
- Lifestyle Series: Popular line in vinyl and wood. Offers hidden screens, energy efficiency, and mid-tier cost. Favored by remodeling teams and boutique hotels.
- Impervia Series: Solid fiberglass double-hung window. Durable in harsh climates. Good for coastal or humid regions with less maintenance.
- 250 Series & Encompass: Vinyl-based, cost‑effective models. Hidden screens and hurricane and impact options available. Practical for volume or new construction orders.
Customer Support & After‑Sales Service
You can contact Pella by phone, email, or via their Pella and Lowe’s showrooms. They usually respond within two business days. That is what they promise on their support portals.
From my experience, they assign trade reps to business clients. These reps help track orders and resolve issues. For large projects, you may get a dedicated project liaison.
They offer training programs and installation guides for contractors. If something goes wrong, the warranty and dealer network help manage repairs or replacements.
Quality Control & Assurance
- Raw Materials Sourcing: Pella uses recycled wood, aluminum, and glass in several lines. They track materials via internal sourcing systems.
- Manufacturing Standards: Production sites follow Kaizen methods and U.S. building codes. Each facility is regularly evaluated for quality.
- Testing & Verification: New models go through tests for air, water, impact, and thermal performance. This helps ensure durability in different climates.
- Third‑Party Audits: Programs like ENERGY STAR and local energy agencies verify performance claims. They audit performance to meet codes in global markets.
- Defect Rates and Recalls: Some past product lawsuits existed, such as for water infiltration in older lines. Public reports now show fewer issues in current double‑hung ranges.
Research & Development
- In‑House Innovation: Pella invented the retractable Rolscreen and Steady Set installation system in their labs. Over 150 patents support product advances.
- Product Testing: The R&D team simulates real-world conditions. They test new hardware, hidden screens, and weather resistance before rollout.
- Market Trends Adaptation: Pella updates hidden screens, modern operators, and energy options based on project needs in varied regions.
- Design Development Process: Customer input and trade feedback guide product revisions. That keeps style and function aligned with project needs.
- Proprietary Patents: Technologies include hidden screens and interior installation tools not found in other brands. They help reduce installation time and issues.
Final Verdict
Pella suits hotels, villas, and full building upgrades seeking energy‑efficient and eco‑friendly windows with project support. However, given occasional service inconsistency and past product issues, working through trusted trade reps is preferred to avoid delays.
Reach Them
- Website: https://www.pella.com
- Headquarters: Pella, Iowa, USA
- Contact:
- Phone: 877‑473‑5527 (New York Post, Pella)
- Email: via contact or PR form: pr@pella.com
3. Vallisco
Vallisco is a new brand launched in 2024 under the Qeeka Home group. I’ve seen their rapid rise in Southeast Asia and Europe where clients like developers, hotel teams, and villa projects use them.
Although new under the Vallisco name, their roots go back to Qeeka’s 13+ years in door and window production. They offer factory‑direct systems with high customisation and solid logistics support.
They focus on aluminium tilt‑turn, sliding, swing, and integrated windows and doors. Their factory has direct export lines and clear process flows.
Product Line
- Tilt‑Turn Windows: Custom sizes, thermal breaks and tight seals. Good for villas or hotels needing ventilation and security.
- Slim‑Frame Sliding Windows: Thin aluminium frames and large glass. Ideal for modern villas and greenhouses.
- Swing and Pivot Windows: Strong hardware and smooth rotation. Used in boutique hotels and upscale residences.
- System‑Integrated Full Walls: Aluminium panels integrated into doors, windows, and walls. Streamlined for large scale projects.
- Customized Systems (OEM/ODM): White‑label supply options. Full branding, packaging, and tailored logistics for developers and architects.
Customer Support & After‑Sales Service
You can reach Vallisco via email or their website form. They promise a typical response within 6 hours.
From my view, they offer remote support and can send technical staff to large projects. They provide installation manuals, remote guidance, and training for your installers. Factory visits or video inspections are available on request.
They also provide prototypes, color swatches, and sample windows for review. Complaints are handled with photo documentation and quick turnaround replacements if needed.
Quality Control & Assurance
- Raw Material Traceability: Tracks aluminium alloy and glass sources. Each batch is labeled and mapped to client orders.
- Manufacturing Standards: Follows CE, ISO, and European building codes in a factory-controlled process.
- Testing Processes: Internal tests for thermal break, acoustic performance, and structural resilience before delivery.
- Third‑Party Verification: Audited to CE and international export thresholds for energy and durability assurance.
- Defect Tracking: Uses policies from Qeeka. Photo-based issue reporting leads to fast correction or replacement strategies.
Research & Development
- In‑House R&D Labs: R&D led by Qeeka’s engineering team. New aluminium system prototypes tested before mass production.
- Product Trials: They build prototype frames and test them for thermal, sound, and wind loading under real-world conditions.
- Market Adaptation: Designs adapt quickly to climate needs in tropical Southeast Asia and varied European zones.
- Customer-Driven Iterations: Feedback from architects and developers drives refinement of frames, seals, and finishes.
- Proprietary Design: Holds internal designs for slim-frame hardware and system integration across product lines.
Final Verdict
Vallisco is ideal for your hotel, villa, or B&B project needing custom aluminium systems with fast, factory-direct service. That said, as a new brand, it may lack the long-term performance history that established names offer.
Reach Them
- Website: https://vallisco.com
- Headquarters: No. 1926, Cao An Highway, Jiading District, Shanghai, China
- Contact:
- Phone: +86 185‐0213‐6587
- Email: customerservice@vallisco.com
4. Internorm International GmbH
Internorm is a family‑run company from Austria. It began in 1931 with a small workshop.
Today they make premium windows and doors in three Austrian factories. They export to over 1,300 partners in 22 countries (Wikipedia).
I’ve met builders and architects who value Internorm’s tight quality control and energy‑focused products. Their systems suit hotel, villa, and B&B projects where insulation and precision matter.
They handle everything in‑house so every part aligns with high standards. They also support you through trade partners trained on their systems (Spectrum Architectural Glazing).
Product Line
- uPVC Windows: Custom built uPVC windows. Easy to care for, strong thermal performance, many colours. Well suited for hotel and villa use.
- uPVC / Aluminium Windows: uPVC inside, aluminium cladding outside. Low maintenance, weather‑proof, colour stable. Good in humid climates.
- Timber / Aluminium Windows: Wood inside, aluminium outside. Elegant interior look plus durable exterior. Popular for luxury villas.
- Sliding & Lift‑Slide Doors: Large glass systems. Frameless corners, panorama options. Great for greenhouses or modern buildings.
- I‑tec Innovations: Integrated shading, invisible locks, smart glass control. Energy‑efficient and modern system upgrades.
Customer Support & After‑Sales Service
You can contact Internorm via email or phone through regional or local offices. They route inquiries to trained distribution partners in your region.
From what I’ve seen, responses vary. Some clients report strong service through trained partners. Others report slow replies or support lapses on complex issues.
They provide trade training, technical guides, and installation tools via their portal. But actual support quality can depend on which partner you use.
Quality Control & Assurance
- Raw Materials: They use certified uPVC, glass, timber, and aluminium. All sources are fully traceable and inspected.
- Manufacturing Standards: All production sites follow ISO 9001 and CE rules. Their plants in Traun, Sarleinsbach, and Lannach fully control output.
- Testing Processes: Internorm tests each window for air leakage, thermal insulation, wind, and sound. They run climate chamber and water penetration tests.
- Third‑Party Audits: Verified by agencies like Passive House institutes and ENERGY STAR standards. Independent audits confirm claims.
- Defect Rates: Public data and trade feedback show very low defect levels. Most issues related to fitting or installation, not product failures.
Research & Development
- In‑House R&D: Internorm runs its own labs. They develop profiles, coatings, and hardware in Austria. Vertical integration supports fast innovation.
- Prototype Testing: New window types are trialled under real conditions. Climate, thermal, security, and acoustic tests are standard.
- Adaptive Design: Products evolve via feedback from architects and builders. Styles match trends in Europe and upscale hotel markets.
- I‑tec Platform: Offers ventilation systems, shading, and locking tech built in. Innovations meet Passivhaus and smart home needs.
- Sustainability Focus: Ongoing investment supports low-emission production and energy-efficient glazing above standard regulations.
Final Verdict
Internorm is a prime fit for B2B clients in Europe and Southeast Asia needing top insulation and certified performance in hotels, villas, or B&Bs.
However, because support comes through distribution partners, service quality may vary depending on local dealer competence and responsiveness.
Reach Them
- Website: https://www.internorm.com
- Headquarters: Ganglgutstraße 131, 4050 Traun, Upper Austria, Austria
- Contact:
- Phone: +43 (0)7229 770‑0
- Email: office@internorm.com
5. VEKA AG
VEKA AG is a German family company. It started in 1967 in Sendenhorst, Germany. I’ve seen fabricators around the world use VEKA uPVC profiles for double-hung window systems. VEKA makes the raw frames that many window makers build into finished windows.
Today, VEKA operates in 23 production plants and 46 locations. They serve Europe, Asia, North and South America. They lead in PVC profile systems for windows and doors.
If you work with fabricators or suppliers, VEKA delivers profiles that meet tight quality, insulation, and design requirements. They support global projects from villas to hotels.
Product Line
- Classic uPVC Profiles: Multi-chambered profiles. Strong thermal insulation and sound reduction. Lead-free compound suited to various climates.
- Co‑extruded Gasket Systems: Profiles with integrated TPV gaskets. Seal welds at corners for better water and air tightness.
- Tilt & Turn & Vertical Slider Systems: Designed for inward opening sliders and vertical sash. Suited to builders in Europe and Asia with space and ventilation needs.
- Mixed Systems with Laminated Finishes: Profiles laminated to mimic wood or textured finishes. Custom colours for facade design continuity.
- Recycling & Compound Materials: Recycled PVC content in profiles. Supports sustainability and reduces environmental impact in building projects.
Customer Support & After‑Sales Service
You contact them by email or phone using their email or the global VEKA website. They also operate regional subsidiaries who support fabricators.
From what I’ve learned, VEKA offers technical guidance to fabricators and trained partners. They host VEKA Academy training for fabricators in many regions. Queries flow through local offices with consistent response paths.
They help trade professionals in material choice, fabrication standards, and quality checks across project stages. This support ensures that B2B clients know what to expect on custom window systems.
Quality Control & Assurance
- Raw Material Traceability: Every batch of PVC resin and additives is labeled and linked to production orders for tracking and quality audits.
- Manufacturing Standards: Factories operate under ISO 9001 and CE certification. VEKA opened the first certified site in 1992.
- Testing Protocols: Profiles are tested for UV resistance, thermal efficiency, and impact per EN standards before release.
- Third‑Party Audits: External verification agencies test against European norms and recycling targets.
- Defect Rate Monitoring: Feedback loops from fabricators help track defect trends. VEKA adjusts production to limit profile faults.
Research & Development
- In‑House R&D Labs: VEKA runs its own labs in Germany. Engineers refine profiles, gaskets, and surface tech for global market fits.
- Prototype Testing: New profile shapes and finishes are tested under climate chambers and mechanical stress testing.
- Innovation in Material Blend: VEKA recycles >25% PVC in product compounds. It also drives weather durability and sustainability.
- Customer‑Led Design: Fabricator feedback guides design changes, surface finishes, colours, and gasket types for project needs.
- Patents & Proprietary Solutions: VEKA holds hundreds of patents covering profile geometry, compound formulas, and surface technologies.
Final Verdict
VEKA is ideal for B2B clients aiming to collaborate with trusted fabricators using world-class PVC profiles for custom double-hung windows. However, as VEKA only supplies profiles, not finished windows, you rely on local fabricators for final window quality and installation consistency.
Reach Them
- Website: https://www.veka.com
- Headquarters: Dieselstraße 8, 48324 Sendenhorst, NRW, Germany
- Contact:
- Phone: +49 2526 29‑0
- Email: info@veka.com
6. Boswindor
Boswindor is among China’s top window and door manufacturers. It began in 2000 in Foshan, Guangdong. I’ve seen their systems used in villa, hotel, and greenhouse projects across Asia and Europe. The company runs a 60,000 m² smart factory with around 1,700 staff. They deliver customized aluminium or uPVC systems quickly and directly to project teams.
Their clients appreciate fast delivery, modern designs, and energy-efficient performance. In my work, I found they can process large orders with consistent quality. Many builders use Boswindor for complete aluminium system solutions.
In my view, Boswindor combines competitive pricing with global export capability. Their focus is practical support for architects and construction teams.
Product Line
- Aluminium Double-Hung (Guillotine): Slim-frame vertical sliders built in aluminium. Great for modern villas and tall windows. Strong in coastal or humid climates.
- uPVC Double-Hung: High-insulation uPVC single or double-glazing models. Cost-effective and durable. Ideal for villa or hotel interiors.
- Smart Glass Windows: Switchable glass that changes from transparent to opaque. Offers energy saving and privacy control. Suited to upscale guest rooms or offices.
- Custom Aluminium Systems: Full wall assemblies with integrated doors, windows, sliding and guillotine systems. Branded OEM/ODM options for developers.
- Awning / Casement Windows: Hinged aluminium units offering ventilation with rain protection. Good for kitchens and bathrooms in humid zones.
Customer Support & After‑Sales Service
You can contact Boswindor via email, phone, website form, or WhatsApp. They also operate service centers in China, Dubai, and California.(Boswindor)
They respond quickly, average delivery lead time is around 9 days and complaint rate is under 0.2 %. That shows strong service for B2B clients.(Boswindor)
For large orders, they assign dedicated project managers. You get sample units, prototypes, and installation guides before delivery. Complaints are handled via photo feedback and fast replacements.
Quality Control & Assurance
- Raw Material Traceability: Uses certified 6063‑T5/T6 aluminium and tempered glass. Each lot is tracked to client orders.
- Manufacturing Standards: Operates under ISO 9001 and CE certification. Surface finish uses AkzoNobel powder coating.
- Testing Procedures: Factory lab tests include thermal resistance, wind pressure, salt spray, sound, and durability cycles.
- Third‑Party Verification: Provides international test reports and certification for export-grade quality assurances.
- Defect Monitoring: Complaint rate below 0.2 % in 2023 means few issues. Rapid feedback loops lead to corrections.
Research & Development
- In-House R&D Labs: Boswindor runs its own testing labs in the factory. Engineers refine frame geometry, thermal breaks, and finishes.
- Prototype Testing: New window designs are trialled for thermal, acoustic, and durability under real conditions.
- Technology Integration: Offers smart glass and integrated window control tech. Responds to modern building trends.
- Design Customisation: Works closely with architects and developers to tune sightlines, sizes, finishes per project.
- Sustainability Focus: Uses recyclable aluminium alloy and long-life coatings to reduce environmental footprint.
Final Verdict
Boswindor is well suited for hotel, villa, or greenhouse projects seeking modern aluminium systems with fast delivery and competitive pricing. However, as a relatively newer player in global export, long-term reputation is still being built.
Reach Them
- Website: https://boswindor.com
- Headquarters: Songxia Industrial Park, Nanhai District, Foshan, Guangdong, China
- Contact:
- Phone/WhatsApp: +86 188‑2593‑8997
- Email: info@boswindor.com
7. ViWinco Inc.
ViWinco is a U.S.-based vinyl window maker. It focuses on double-hung systems for new construction and replacement markets. I’ve seen it used in villa, hotel, and B&B projects worldwide. Their products ship from Morgantown, Pennsylvania, USA. They combine ease of use, energy performance, and clean design.
Their tilt‑and‑lock hardware makes single-handed operation simple. Clients appreciate their quick documentation and technical guides. They are a solid partner for export projects into Southeast Asia or Europe.
Product Line
- S‑Series Double‑Hung: Custom vinyl windows with patented Tilt‑n‑Lock hardware, argon-filled insulated glass, and fusion‑welded frame for strength and insulation.
- Cambridge Double‑Hung: Energy-efficient sash operation with hidden hardware. Good for replacement or architectural upgrades.
- OceanView Impact Double‑Hung: Designed for high-impact zones. Includes Tilt‑n‑Lock hardware and clear sightlines even after impact testing.
- Edgemont Double‑Hung: Standard double-hung units with Cam-style lock and tilt latches. Easy to maintain and operate.
- Accessories & Grids: Add-on options like trim casing, screen track, grids, and jamb extensions to match design and installation needs.
Customer Support & After‑Sales Service
You can reach ViWinco by email, phone, or through their website form. They also host a document library and video guides to assist your installer.
My experience shows fast responses and clear answers. They offer trade support and warranty guidance tailored to B2B clients. They assist with installation documentation and performance data.
Quality Control & Assurance
- Raw Materials Sourcing: ViWinco uses chambered vinyl and tempered glass. Sourcing is tracked per order for consistency in quality and supply.
- Manufacturing Standards: Frames are fusion‑welded, with stainless steel balance systems. Units meet NFRC and AAMA/WDMA/CSA standards.
- Testing Processes: Units undergo air and water infiltration tests. Impact and wind resistance are measured per NFRC and industry tests.
- Third‑Party Verification: Performance data is certified by labs under NFRC 100 and CSA/AAMA protocols. Impact ratings verified for coastal and hurricane zones.
- Defect Rates: ViWinco earns positive feedback in multiple customer reviews. Their products show low defects and issue reports over years of use.
Research & Development
- In‑House Innovation: ViWinco designs its Tilt‑n‑Lock mechanism. The engineering team refines hardware for ease and sightline clarity.
- Product Testing: All new lines undergo climate, structural, and seal testing. Balance springs and tilt mechanisms are validated under usage cycles.
- Market Trends Adaptation: They offer laminate finishes, grid styles, and glass packages to match local design norms in Asia and Europe.
- Customer‑Led Design: Feedback from architects and contractors helps refine installation features, profile sightlines, and accessory fits.
- Performance Focus: Windows are rated for DP50 wind exposure and meet Florida hurricane codes if required for project locations.
Final Verdict
ViWinco is a strong pick for hotel, villa, or B&B projects needing vinyl double‑hung windows with clean design, energy efficiency, and ease of use. However, since they focus on vinyl and newer in the global export scene, long-term brand trust may take time to build.
Reach Them
- Website: https://www.viwinco.com
- Headquarters: Morgantown Business Park, Morgantown, Pennsylvania, USA
- Contact:
- Phone: (610) 286‑8884
Conclusion
That hotel owner I mentioned at the start? The one stuck with delays and poor windows? He now uses reliable suppliers and has no more window problems.
The 7 manufacturers we covered offer solid choices for villas, hotels, and full-home upgrades. Each one has its own strengths.
Go back through the list. Find the one that fits your build best.
If you want a flexible and efficient partner for your next project, Vallisco can help. Their custom systems and fast support work well for growing businesses.
Contact us today to discuss your window and door needs.
