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Precision. Engineered. Perfection.

European-engineered windows and doors delivering uncompromising energy performance.
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uPVC and aluminum window systems for premium homes and residential projects. NFRC/AAMA certified. 5–8 week delivery. 30% cost advantage. Direct expert support.

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52 U.S. projects delivered

Completed installations in 2024

100+ certified assemblies

NFRC/AAMA tested systems

10x thermal performance

Compared to standard U.S. windows

200% sound insulation

Measured vs. typical construction

-27% project cost

Average savings over local premium

Certified European window systems

NFRC/AAMA/ASTM-certified uPVC and aluminum windows engineered for U.S. projects. Direct access to technical experts. Delivered door-to-door in 5–8 weeks.

uPVC Systems

Passive House thermal performance

Multi-chamber profiles maximize insulation, durability, and sound reduction. Designed for energy-focused homes and compliance-driven builds.

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Aluminum Systems

Structural integrity, minimal sightlines

High-strength frames, advanced security, and custom finishes. Optimized for large spans and modern architectural detail.

Direct access to engineers

Consult with a technical specialist from initial plans to delivery. On-site support available post-deposit.

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Precision windows. Certified performance.

Premium uPVC and aluminum window systems engineered for U.S. standards. NFRC/AAMA/ASTM certified, energy-efficient, and delivered direct from Europe with full project support.

NFRC certified

Advanced insulation and energy savings for all U.S. climate zones. Fully compliant with leading certification standards.

Direct access to engineers

Consult directly via WhatsApp with a technical specialist from design through delivery. No intermediaries or call centers.

5–8 week delivery, DDP included

Fast, insured shipping with customs clearance and door-to-door service for seamless project management.

Dominik Czerwiński
Founder & Chief Engineer, FENEDO
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As an engineer with windows in my blood, I was born into a family where the craft of window-making has been our legacy for generations. My entire family has been involved in the window industry, giving me a unique perspective that combines deep technical knowledge with hands-on experience from the factory floor to final installation.

After witnessing a fundamental flaw in building science—where European standards relentlessly pursued thermal perfection while conventional American windows remained a significant source of energy loss—I founded Fenedo with a mission. We don't just sell windows; we deliver complete building envelope solutions that bring the rigor of Polish engineering and proven performance principles to American homes.



#ZeroCompromise
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We don't build windows to meet the standard; we engineer them to set a new one. Your home's comfort and efficiency should never be a compromise.

Precision answers. Certified expertise.

Your technical questions, answered by engineers. Explore certifications, delivery, pricing, and direct support for high-performance window systems.

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Which certifications do your systems hold?

All window systems are independently tested and certified to NFRC, AAMA, and ASTM standards for U.S. compliance. Full documentation is provided for every project to support code approval and energy incentive eligibility.

What is your typical delivery time?

Standard lead time is 5–8 weeks from final sign-off to job site delivery, including customs and insurance. Door-to-door logistics are fully managed for reliable scheduling.

How do your prices compare locally?

Our direct export model provides up to 30% lower total cost than U.S. premium brands, with no resellers or middlemen. Clients work directly with our engineering team for maximum value.

Who will be my main point of contact?

Each project is assigned a dedicated technical specialist for direct communication from consultation to delivery. No call centers—just clear, expert guidance at every step.

NFRC-certified European window systems

Direct to site. Engineered for performance.

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