What Hilzinger does

Hilzinger GmbH is a German fenestration manufacturer founded in 1946 and headquartered in Willstätt, Baden-Württemberg. The company produces windows and doors in five frame material categories — PVC (Kunststoff), wood (Holz), aluminium, wood-aluminium, and PVC-aluminium — across 16 production sites in Germany, 4 in France, and 2 in the Czech Republic. All windows are manufactured to RAL-Gütezeichen quality standards, and the portfolio includes specialized product systems such as the patented dilatation-layer Exclusiv front door, Acrylcolor surface technology, solar-powered roller shutters, and the inoSmart smart door opening system. The company operates under the corporate group identity 'hilzinger Unternehmensgruppe' with multiple wholly-owned subsidiaries (BFH, Schenk, Rubo, Mittnacht, Walter Fenster + Türen, hilzinger Metallbau, and the recently acquired Müller Fenster + Fassaden).

The business operates a hybrid B2B2C and direct-to-consumer go-to-market model. Roughly 1,000 independent specialist trade partners (Fachhandelspartner) across Germany sell and install Hilzinger products, supported by field sales representatives serving the Wohnungswirtschaft (housing companies) and Planer (architects/planners) segments. Direct-to-consumer acquisition is enabled through the hilzinger24.de portal, the Online-Fensterberater, the hilzinger EXCLUSIV door configurator, and an annual online expert lecture ('Durchblick beim Fensterkauf'). Revenue is generated primarily through one-time sale of manufactured windows and doors across all materials, professional installation services bundled with quotes, and lead-routing from online configurators to regional partners. Pricing is bespoke and quote-based; products are eligible for German federal and state renovation subsidies of 5-45% or 20% tax refunds, which Hilzinger actively supports via the Fördermittelauskunft subsidy assistant.

The company is family-owned with a generational transition announced for 2026, has 1,001-5,000 employees, and is self-positioned as 'Deutschlands große Fenstermarke' (Germany's large window brand). Its competitive positioning rests on nationwide production scale, the 1,000-partner distribution network, RAL-certified quality, and a comprehensive multi-material product portfolio spanning windows, front doors, interior doors, sliding doors, balcony/terrace doors, roller shutters, insect screens, and accessories.

Name

Hilzinger

Legal name

hilzinger GmbH

Website

https://hilzinger.de

Company type

Private

Founded year

1946

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Hilzinger is a German family-owned fenestration manufacturer producing windows and doors in PVC, wood, aluminium, and composite materials across 22 European production sites. It sells primarily through a ~1,000-partner specialist trade network and direct online channels to homeowners, housing companies, architects, and trade partners across Germany, France, and the Czech Republic.

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

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

akta.pro primary industry

Interior Doors (IMADAIAB)

akta.pro secondary industries

Louvers, Vents & Architectural Grilles (IMADAIAM), Screens, Storm Doors/Windows & Insect Protection Systems (IMADAIAK), Doors, Windows & Millwork Retail (Interior/Exterior Doors, Windows, Moulding) (CRAIAEAI)

Keywords

• Window manufacturing
• Door manufacturing
• PVC windows
• Front doors
• Roller shutters

Headquarters

HQ city

Willstätt

HQ country

Germany

HQ region

Europe

Offices25 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Window and door product sales: Sale of manufactured windows and doors across all frame materials (PVC, wood, aluminium, wood-aluminium, PVC-aluminium) and related products (roller shutters, insect screens, door handles) directly to consumers and through the partner network.
2. Installation services: Provision of professional window and door installation including removal and disposal of old windows, delivered by trained installers. Installation services are offered as part of bundled quotes and are facilitated through the partner network.
3. Online configurator and quote services: The Online-Fensterberater and door configurator tools generate qualified leads that are routed to regional partner businesses for quote preparation, supporting the partner revenue model.

Pricing tiers

Go-to-market motion4 records

Distribution channels4 records

Marketing channels6 records

Core offering

Hilzinger manufactures and supplies windows, front doors, interior doors, sliding doors, balcony/terrace doors, roller shutters, insect screens, and window hardware in PVC, wood, aluminium, wood-aluminium, and PVC-aluminium frame materials. Products are produced to RAL-Gütezeichen quality standards across 16 German, 4 French, and 2 Czech production sites, and are sold via a network of approximately 1,000 specialist trade partners complemented by direct-to-consumer online portals and showrooms.

Product overview

Hilzinger is a German window and door manufacturer offering a comprehensive portfolio of fenestration products. The company produces windows in five frame material categories: Kunststoff (PVC), Holz (wood), Aluminium, and Holz-Aluminium (wood-aluminum), plus Kunststoff-Aluminium variants. The core plastic window lineup includes multiple series (Matura, Zenit, Master, Strato, Solid, Supertherm) with installation depths from 76mm to 88mm, each offering various surface options including white, Dekor foil, Acrylcolor, and AluClip aluminum cladding. The door portfolio encompasses front doors (Haustüren), interior doors (Innentüren), sliding doors (Schiebetüren), and balcony/terrace doors, with an online configurator (hilzinger EXCLUSIV) for custom front door design. Complementary products include roller shutters (with solar-powered options), insect screens, and window hardware. Supporting services include an online window advisor for quotes, a subsidy assistant for government funding programs, and professional installation through a network of over 1,000 partner businesses across Germany. The company operates 16 production facilities in Germany, 4 in France, and 2 in Czech Republic, with products manufactured under the RAL-Gütezeichen quality certification.

Differentiator

Problem solved

Functional benefit

Brands

• hilzinger EXCLUSIV: Premium aluminium entrance door series for new builds and renovation, featuring high thermal insulation, 5-point security locking, multiple color variants, and optional inoSmart fingerprint/app door opening system.

Products and services

• Kunststofffenster (PVC Windows) Plastic (PVC) windows for residential renovation and new construction, offered in multiple installation depths (76-88mm) and surface finishes (white, Dekor, Acrylcolor, AluClip aluminium-clad), achieving Uw values up to 0.73 W/(m²K). Targeted at homeowners, builders, and trade partners.
• Holzfenster (Wood Windows) Natural wood-frame windows in Natura series (Classic, Denkmal, Stil, Altbau variants) for residential applications, combining classic aesthetics with thermal performance.
• Holz-Aluminium Fenster (Wood-Aluminium Windows) Composite wood-aluminium windows combining a natural wood interior with aluminium exterior cladding for enhanced weather resistance and longevity.
• Aluminium Fenster (Schüco AWS 75.SI) Aluminium window system using Schüco AWS 75.SI profile with super-insulation (SI) thermal break technology for high-performance commercial and residential applications.
• Haustüren (Front Doors) Entry doors available in PVC, wood, aluminium, wood-aluminium, and PVC-aluminium materials for residential properties, with multiple security levels and optional smart lock integration.
• hilzinger EXCLUSIV Front Door Series Premium aluminium entrance door sub-brand with high thermal insulation, 5-point security locking, multiple colour variants, patented dilatation layer for thermal stability, and optional inoSmart fingerprint/smartphone-app door opening system.
• Nebeneingangstüren (Side Entrance Doors) Secondary/side entrance door systems for residential properties.
• Innentüren (Interior Doors) Interior door products for residential applications.
• Schiebetüren (Sliding Doors) Large-format sliding door systems connecting indoor and outdoor spaces with extensive glass surfaces.
• Balkon- und Terrassentüren (Balcony and Terrace Doors) Balcony and terrace door systems in turn or tilt-turn configurations, including two-leaf options reaching approximately 2,200mm width.
• Rollläden (Roller Shutters) Surface-mounted and built-in roller shutters (Aufsatzrollläden, Vorbaurollläden) and Raffstoren (external venetian blinds) for new construction and modernisation.
• Solarbetriebene Rollläden (Solar-Powered Roller Shutters) Solar-powered roller shutters for energy-efficient window renovation without requiring electrical wiring, combining solar energy with shutter functionality.
• Insektenschutz (Insect Protection Systems) ByeByeFly branded insect screen solutions to protect against mosquitoes, gnats, and other insects for windows and doors.
• Fenstergriffe (Window Handles) Window handle accessories and hardware for operating windows, including security handles such as SecuForte.
• hilzinger Metallbau GmbH Metal Construction Products Windows, doors, and metal construction products manufactured by the Fritzlar-based subsidiary hilzinger Metallbau GmbH.

Quantifiable outcome

• Government subsidies covering 5–45% of window renovation costs or 20% tax refund for qualifying projects
• +2 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• SC FreiburgcoreGTM or Marketing PartnerOfficial sponsor of SC Freiburg football club. Hilzinger is prominently featured as a sponsor at matches and receives brand visibility through club media and digital channels. The partnership reinforces hilzinger's regional identity as a Baden-based company and supports brand awareness among a broad audience.
• SiegeniacoreTechnology or IntegrationSiegenia is a key hardware supplier for hilzinger windows, providing high-quality window fittings (Pilzzapfen, Sicherheitsschließteile) that enable burglary resistance across security levels from base security through RC2. The partnership ensures consistent hardware quality across the product range.
• RotocoreTechnology or IntegrationRoto is a key hardware supplier for hilzinger windows, providing window fittings and locking systems for burglary resistance and functional durability.
• Rewindo (PVC window recycling)minorStrategic or Co-development PartnerRewindo is a PVC window and door recycling scheme that hilzinger participates in. Old PVC windows and production waste are recycled through Rewindo, and the recycled material is used to manufacture new PVC windows, supporting hilzinger's sustainability programme.
• GEALANcoreTechnology or IntegrationGEALAN is a profile system supplier for hilzinger's Strato 83 MD Kunststofffenster. The partnership provides the PVC profile systems that form the structural frame of hilzinger's windows.
• VEKAcoreTechnology or IntegrationVEKA is a profile system supplier for hilzinger's Solid 76 MD Kunststofffenster, providing PVC window profile systems.
• profine (Profine group / KBE)coreTechnology or Integrationprofine group (including KBE brand) is a profile system supplier for hilzinger's Matura 76 and Master 88 window systems.
• SchücocoreTechnology or IntegrationSchüco AWS 75.SI Aluminium is the aluminium window system used in hilzinger's aluminium window range.
• Fördermittelauskunft (foerdermittelauskunft.de)minorGTM or Marketing PartnerOnline subsidy assistant (foerdermittelauskunft.de) accessible through the partner portal, helping partners identify applicable federal and state subsidy programmes for customers' renovation projects.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Market position

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/hilzingerGmbH
• Facebookfacebook.com/hilzingerGmbH
• Instagraminstagram.com/hilzinger_fenster_und_tueren

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries7 records

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 Hilzinger