Fensterbau Hartmann GmbH

What Fensterbau Hartmann GmbH does

Fensterbau Hartmann GmbH is a privately held, family-owned German window and door manufacturer founded in 1970 and headquartered in Schaafheim, Hesse. The company designs, produces, and installs custom windows and doors in PVC (Kunststoff), wood, and aluminum, primarily using Kömmerling profile systems, including the Kömmerling ReFrame line of 100% recycled plastic windows with proCoverTec surface technology. Its portfolio spans standard, energy-saving, security (RC-certified), soundproof, monument-protection, and comfort sliding windows, alongside PVC, aluminum, wood-aluminum, and interior front doors, sliding doors, and accessories including roller shutters, sun protection, insect screens, and smart-home controls.

The business operates from four locations in the Rhein-Main region — Schaafheim (HQ and production), Offenbach (showroom), Hanau, and a planned Darmstadt showroom — serving private homeowners as the primary segment and commercial or object builders as a secondary segment across Bayern, Hessen, and Baden-Württemberg. Its own certified installation teams execute over 1,000 installations per year under RAL- and GEG-compliant processes verified by ift Rosenheim, and a subscription-style maintenance service extends the factory warranty up to 30 years on fittings, seals, and glass. The firm is led by owner-managing director Willi Hartmann and operates as a classic German Mittelstand family business with no disclosed external funding, subsidiaries, or M&A activity.

The revenue model is project-based: one-time sales of made-to-order windows and doors bundled with professional installation, disposal, and (optionally) recurring maintenance contracts. Pricing is quote-driven and not publicly disclosed, emphasizing transparent binding offers without hidden costs. The go-to-market combines physical showrooms, in-home consultation, an online appointment-booking portal, social media presence on Facebook, Instagram, and YouTube, and customer-review platforms (Google, ProvenExpert), supplemented by word-of-mouth referrals in the regional market.

Name

Fensterbau Hartmann GmbH

Legal name

Fensterbau Hartmann GmbH

Website

https://fb-h.de

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

1–10 employees

Short description

Fensterbau Hartmann GmbH is a family-owned German window and door manufacturer founded in 1970 and headquartered in Schaafheim, Hesse. The company produces and installs custom PVC, wood, and aluminum windows and doors for private homeowners and commercial builders across the Rhein-Main region.

Ownership category

akta.pro rank

Product category

Window and Door Manufacturing

NAICS

Wood Window and Door Manufacturing (321911), Metal Window and Door Manufacturing (332321)

SIC

Millwood, Veneer, Plywood, & Structural Wood Members (2430), Metal Doors, Sash, Frames, Moldings & Trim (3442), Lumber & Wood Products (No Furniture) (2400)

akta.pro primary industry

Custom Window & Door Fabrication & Replacement (HSAPAJAI)

akta.pro secondary industries

Exterior Doors (IMADAIAA), Interior Doors (IMADAIAB), Window & Door Weatherproofing & Sealing (Caulking/Flashing) (HSAPAJAJ)

Keywords

• Custom window manufacturing
• PVC door fabrication
• Aluminum window installation
• Wood window production
• Fenestration renovation services

Headquarters

HQ city

Schaafheim

HQ country

Germany

HQ region

Europe

Offices4 records

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Marketing or Sales, Technology or R&D

Revenue model

1. Window and Door Sales: Sale of custom-manufactured windows and doors in PVC, wood, aluminum, and wood-aluminum combinations. Products include standard windows, energy-saving windows, security windows, soundproof windows, heritage/protection windows, residential doors (PVC, aluminum, wood-alu), interior doors, and sliding doors.
2. Installation Services: Professional installation services by certified own installation teams, including removal and environmentally compliant disposal/recycling of old windows.
3. Maintenance and Repair Services: Post-sale maintenance services and repair work. Includes preventive maintenance to ensure functionality and longevity, with warranty extension options up to 30 years through the Hartmann Maintenance Service.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Fensterbau Hartmann GmbH is a family-owned manufacturer of custom windows and doors in PVC, wood, and aluminum, based in Schaafheim, Germany. The company produces standard, energy-saving, security, soundproof, monument-preservation, and premium windows, plus front, interior, and sliding doors, and complements manufacturing with professional in-house installation, repair, and preventive maintenance services for residential and commercial customers in the Rhein-Main region.

Product overview

Fensterbau Hartmann GmbH is a traditional window and door manufacturer based in Schaafheim, Germany, operating since 1970. The company offers a comprehensive portfolio of windows and doors with material options including PVC (Kunststoff), wood (Holz), and aluminum (Aluminium), along with extensive accessories and installation services. The product range includes standard windows, specialized security and monument-protection windows, and the sustainable Kömmerling ReFrame line made from 100% recycled plastic. Door offerings encompass front doors (Haustüren), interior doors (Innentüren), and sliding doors (Schiebetüren) in various materials. Complementary products include sun protection systems (Rollläden, Sonnenschutz), insect protection, roller shutters, pleated blinds, and Smart Home integration. The company also provides installation, repair, and maintenance services, including warranty extensions up to 30 years, plus assistance with government subsidies (BAFA, 20% tax credits) for energy-efficient upgrades.

Differentiator

Problem solved

Functional benefit

Products and services

• Kunststofffenster (PVC Windows) High-quality plastic windows made from Kömmerling profiles for residential and commercial customers, offering durability, low maintenance, and excellent thermal insulation, available in various colors and textured surface finishes.
• Holzfenster (Wood Windows) Natural wood windows with excellent thermal insulation properties and warm aesthetic appeal, designed for residential customers seeking a comfortable indoor climate and traditional appearance.
• Aluminiumfenster (Aluminum Windows) Aluminum windows with exceptional durability, stability, and modern aesthetics featuring slim frame profiles that enable large glass surfaces, suitable for residential and commercial applications.
• Sicherheitsfenster (Security Windows) Specialized windows with certified burglary protection, featuring special security fittings, impact-resistant glazing, and robust locking systems, installed by RC-certified specialists for maximum burglary protection.
• Denkmalschutzfenster (Monument Preservation Windows) Specially designed windows for historic buildings and monument protection requirements, meeting specific heritage preservation standards applicable in German-listed property renovations.
• Komfort-Schiebefenster (Comfort Sliding Windows) Easy-to-operate sliding windows designed for enhanced user comfort and accessibility in residential settings.
• Förderfenster (Subsidized Energy-Efficient Windows) Energy-efficient windows eligible for BAFA subsidies and 20% tax credits, helping residential customers reduce heating costs with verified thermal performance.
• Premiumfenster (Premium Windows) Premium-quality windows with advanced features and superior performance characteristics for residential customers seeking the highest tier of thermal insulation and aesthetics.
• Kömmerling ReFrame (100% Recycled Plastic Windows) Sustainable PVC windows manufactured from 100% recycled plastic, featuring proCoverTec surface technology with UV resistance, excellent thermal insulation, and elegant matte finish, combining sustainability with quality and aesthetics.
• Kunststoff-Haustüren (PVC Front Doors) Front doors made from high-quality PVC, combining security, functionality, and attractive design with excellent thermal insulation for residential entrances.
• Aluminium-Haustüren (Aluminum Front Doors) Aluminum front doors with high weather resistance, modern design, and excellent thermal insulation properties for residential and commercial entrances.
• Holz/Alu-Haustüren (Wood-Aluminum Front Doors) Hybrid front doors combining natural wood interior aesthetics with aluminum exterior protection, offering both design appeal and weather resistance.
• Innentüren (Interior Doors) Interior doors in various styles and materials designed to complement residential interiors.
• Schiebetüren (Sliding Doors) Sliding doors including lift-and-slide systems (Hebe-Schiebetüren) providing generous views and seamless transitions between indoor and outdoor spaces.
• Montage-Service (Installation Service) Professional installation service delivered by certified in-house technicians performing over 1,000 installations annually, including RC-trained security window specialists, RAL-compliant mounting with quality sealing materials, and environmentally compliant disposal of old windows.
• Reparaturservice (Repair Service) Professional repair service for windows, doors, and accessories, available for order through an online form on the company website with subsequent confirmation and follow-up by Fensterbau Hartmann.
• Wartungs-Service (Maintenance Service) Preventive maintenance service extending the factory warranty by 3 years per maintenance visit, up to 30 years total, covering fittings, seals, and glass through the Hartmann maintenance program.
• Förderungen (Subsidies & Grants Assistance) Assistance service for customers applying for government subsidies and tax incentives, including BAFA funding and 20% tax credits for energy-efficient window and door replacements, with the company's energy advisor handling the application process.

Quantifiable outcome

• Energy cost savings of up to 40% with eligible premium windows
• +2 more outcomes

Named customers2 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Four partnerships are on record, tiered minor and core.

• HoltikonminorStrategic or Co-development PartnerFensterbau Hartmann partners with Holtikon for the Kenya school construction project (Mekaela Academies). The partnership involves Holtikon and other companies providing complete financing for building a school in Kenya, demonstrating shared commitment to corporate social responsibility and international development projects.
• Mekaela AcademiesminorOthersFensterbau Hartmann supports the Mekaela Academies school construction project in Kenya. The school is fully financed through a consortium of engaged companies. The project aims to provide children in disadvantaged regions not only a roof over their heads but a stable foundation for a self-determined life.
• KömmerlingcoreTechnology or IntegrationKömmerling is the primary profile supplier for Fensterbau Hartmann's PVC windows. The company uses high-quality Kömmerling profiles for plastic windows and offers the Kömmerling ReFrame product line made from 100% recycled materials. Kömmerling also awarded Fensterbau Hartmann the Tomorrow Award in Social Engagement.
• ift RosenheimminorOthersift Rosenheim is a testing and certification institute that regularly verifies Fensterbau Hartmann's installation work, ensuring compliance with RAL standards and the Building Energy Act (GEG) for optimal thermal protection, sound insulation, and burglary prevention.

Scale indicators4 records

Recent moves5 records

Expansion highlights6 records

Direct peers

• Weru Group: German manufacturer of premium PVC, wood, and wood-aluminum windows and front doors with strong brand recognition in Germany. Direct competitor to Fensterbau Hartmann in energy-efficient, security and premium residential windows, with a similar full-service, dealer/installer-led model.
• Internorm Fenster GmbH: Austria's largest and one of Europe's leading window manufacturers, selling PVC, wood-aluminum, and timber windows through partner dealers/installers. Comparable in go-to-market (dealer/installer network + premium windows + energy efficiency focus) and in product mix to Fensterbau Hartmann.
• Finstral AG: South-Tyrolean family-owned window and door manufacturer with vertically integrated production and direct sales/showrooms in multiple regions. Closely comparable to Fensterbau Hartmann in being a family Mittelstand window manufacturer with own showrooms, certified installation, and a strong regional brand.

Others

• Rehau Group (Building Solutions): Major polymer/profile supplier for PVC windows and doors. Comparable to the Kömmerling relationship Fensterbau Hartmann has: both are upstream system/profile vendors that the manufacturer depends on for PVC window and door solutions.
• Veka AG: One of the world's largest PVC profile extruders for windows and doors. Listed because Fensterbau Hartmann's PVC windows are profile-based, and Veka is a direct alternative to Kömmerling in the German fabricator supply chain.

Emerging players

• Solarlux GmbH: German specialist manufacturer of high-end sliding/lift-and-slide doors, winter gardens, and balcony glazing. Direct overlap with Fensterbau Hartmann's Schiebetüren (incl. Hebe-Schiebetüren) and premium window lines, with a similar premium positioning and object-builder channel.

Broad incumbents

• BAUHAUS GmbH & Co. KG: Pan-European big-box DIY/home-improvement retailer selling standardized windows, doors, and installation services. Not a like-for-like manufacturer, but a competitive destination for price-sensitive homeowners who might otherwise buy from a regional specialist like Fensterbau Hartmann.
• Hörmann Group: Germany's leading door manufacturer, especially for residential front doors and industrial/commercial doors. Comparable to Fensterbau Hartmann's front-door business (PVC, aluminum, wood-alu) but with a global manufacturing footprint and broader product portfolio.
• Schüco International KG: One of Germany's largest aluminum and PVC window/door system manufacturers. Overlaps with Fensterbau Hartmann on aluminum and PVC window/door systems and serves both residential and commercial builders, but operates at a national/European scale as a profile/system supplier rather than a regional installer.

Regional players

• Heroal GmbH & Co. KG: German family-owned manufacturer of aluminum window, door, roller-shutter, and sun-protection systems. Overlaps with Fensterbau Hartmann's aluminum window/door and sun-protection offering, especially for the commercial/object-builder segment, but is a system supplier rather than an installer.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/fbhartmann
• Facebookfacebook.com/fensterbauhartmanngmbh
• Instagraminstagram.com/fensterbau_hartmann
• LinkedInlinkedin.com/company/fensterbau-hartmann-gmbh

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Fensterbau Hartmann GmbH