Rabmer Holding Gmbh

What Rabmer Holding Gmbh does

Rabmer Holding Gmbh (legally Rabmer Management & Beteiligungs GmbH; also trading as Rabmer Gruppe / Rabmer Group) is a second-generation, family-owned Austrian group founded in 1963 by Josef and Maria Rabmer in Upper Austria, with headquarters in Altenberg bei Linz and approximately 110 employees. The group operates through wholly-owned subsidiaries across three core business areas: environmental technology (Rabmer GreenTech GmbH for international distribution, Rabmer Bau & Umwelttechnik GmbH), construction and real estate (Rabmer Hochbau GmbH, R&R Holzbau GmbH, Rabmer Immobilien GmbH), and municipal services, with regional operations through Rabmer Espana SL in Spain. Leadership passed to Ulrike Rabmer-Koller in 2002.

The environmental technology product portfolio is anchored by AQUABION (galvanic zinc sacrificial anode limescale and corrosion protection with 500,000+ units sold across Europe and 15+ years of market presence), the Ecowaterjet water-saving shower insert (up to 50% water/energy reduction, Austrian Federal Ecolabel and TÜV Austria certified), Energy from Wastewater systems using heat exchangers and heat pumps (deployed at Tulln Town Hall, Vio Plaza Vienna Meidling, Vienna Canal Blumental, and E+E Electronics with up to 40% total energy reduction), APESS exhaust air energy recovery (up to 85% energy reduction in ventilation), the patented MHP-Mannesmann Hydrophysical Water Treatment (cavitation-based disinfection), Watersprint D4 UV-LED disinfection, OPTIFIL backwash filtration, the patented Vertiliner UV-cured glass fiber manhole rehabilitation system, and a family of trenchless pipe rehabilitation methods (tube liner, Primus-Line, Close-Fit, Burst lining). Patents and registered trademarks protect several of these offerings.

Rabmer generates revenue through four streams: project-based construction and building services (residential, commercial, agricultural, renovation, timber, painting, earthmoving), one-time product sales and installation of environmental technology hardware (B2B-dominant, including international distribution via Rabmer GreenTech), municipal services contracts under recurring arrangements (winter maintenance, ditch clearing, mowing, pipeline construction, fiber optic installation, dating to 1978), and real estate development (condominiums and houses for sale, e.g., EUR 245,300+ in Reichenau, EUR 529,000–585,000 near Pöstlingberg). A smaller recurring revenue line is Rabmer Workspace office rentals from EUR 250/month. The customer base spans named enterprise accounts (Siemens with ~450 AQUABION units, Procter & Gamble, E+E Electronics, Ritz-Carlton Berlin, Belmond La Residencia), mid-market commercial accounts (Starlim, BÄKO, Hotel Bayrischer Hof), and a long tail of regional construction and municipal clients across Austria.

Name

Rabmer Holding Gmbh

Legal name

Rabmer Management & Beteiligungs GmbH

Website

https://rabmer.at

Company type

Private

Founded year

1963

Operating status

Operating

Short description

Rabmer Holding Gmbh is a second-generation, family-owned Austrian group (founded 1963, ~110 employees) operating three businesses: environmental technology products (AQUABION limescale protection, Ecowaterjet shower inserts, wastewater energy recovery, trenchless pipe rehabilitation), regional construction and real estate development, and municipal services contracts for Upper Austrian municipalities.

Ownership category

akta.pro rank

Product category

Environmental Technology & Construction Services

NAICS

Remediation Services (562910), Remediation and Other Waste Management Services (5629), Soap and Cleaning Compound Manufacturing (32561), Environmental Consulting Services (541620)

SIC

Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564), Specialty Cleaning, Polishing And Sanitation Preparations (2842), Sanitary Services (4950)

akta.pro primary industry

Pipework, Calorifier & Heat Exchanger Descaling/Decontamination (BPABAJAI)

akta.pro secondary industries

Cooling Tower & Evaporative Condenser Water Treatment (BPABAJAC), System Cleaning, Flushing & Commissioning (Pre-commission/Refurb) (BPABAJAG), Emissions Controls & Environmental Retrofit Services (SCR/FGD/ESP, CEMS) (EUAEALAL)

Keywords

• Environmental technology solutions
• Construction services
• Trenchless pipe rehabilitation
• Water treatment systems
• Municipal infrastructure services

Headquarters

HQ city

Altenberg Bei Linz

HQ country

Austria

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Construction and Building Services: Regional house construction, commercial and agricultural building construction, renovation projects, timber construction, painting services, earthmoving and transportation. Revenue generated through project-based contracts and general contractor services.
2. Environmental Technology Products and Installation: Sale and installation of environmental technology products including AQUABION systems, Ecowaterjet shower inserts, water treatment systems, pipe rehabilitation services, and manhole renovation systems. Includes Rabmer GreenTech GmbH international sales operations.
3. Real Estate Development and Sales: Development and sale of residential properties including condominiums, terraced houses, and semi-detached houses. Both subsidized and privately financed projects.
4. Municipal Services Contracts: Ongoing municipal services including winter maintenance, ditch clearing, mowing work, transport services, pipeline construction, and fiber optic cable installation for municipalities.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels4 records

Core offering

Rabmer Holding Gmbh delivers environmental technology products and installation (AQUABION limescale protection, Ecowaterjet water-saving shower systems, energy recovery from wastewater and exhaust air, water treatment and disinfection, trenchless pipe and manhole rehabilitation, biological grease solvents), regional construction and real estate services (residential, commercial and agricultural buildings, renovation, timber construction, painting, earthmoving, real estate development), and municipal services (winter maintenance, mowing, ditch clearing, shaft frame renovation) across Austria and international markets through its Rabmer GreenTech subsidiary.

Product overview

Rabmer Holding Gmbh is an Austrian family-owned company (founded 1963) operating primarily in construction, environmental technology, and municipal services. The company operates as a group of subsidiary companies including Rabmer GreenTech GmbH for international environmental technology distribution. The product portfolio centers on three environmental technology offerings: (1) AQUABION limescale and corrosion protection using galvanic zinc sacrificial anode technology; (2) Ecowaterjet water-saving shower inserts that reduce water/energy consumption by 50%; and (3) Energy recovery systems from wastewater and exhaust air using heat exchangers and heat pumps. Additional environmental products include water treatment systems (reverse osmosis, UV disinfection, filtration), pipe/manhole rehabilitation technologies (Vertiliner, trenchless pipe renovation), and grease trap maintenance solutions. The construction division offers residential and commercial building services, timber construction, renovation, and real estate development. The company also operates Rabmer Workspace, a furnished office rental service. The overall offering combines hardware products (AQUABION, Ecowaterjet, rehabilitation systems) with engineering services and project implementation.

Differentiator

Problem solved

Functional benefit

Brands

• Ecowaterjet by rabmer: Water and energy-saving shower insert system that saves up to 50% water and energy
• AQUABION
• Vertiliner
• Rabmer Workspace
• MHP - Mannesmann Hydrophysical Water Treatment
• Watersprint D4
• OPTIFIL

Products and services

• AQUABION Limescale and Corrosion Protection Chemical-free limescale and corrosion protection system using zinc sacrificial anode (galvanic principle) for residential buildings, hotels, hospitals, and industrial facilities (e.g., Siemens AG water-cooled nuclear spinning tomographs, Procter & Gamble, Hotel Bayrischer Hof). Requires no salt, chemicals, electricity, or magnets. Achieves up to 20% flow rate increase in first year for calcified pipes and saves energy for hot water production (1 mm less limescale = 10% less energy). Package price from EUR 1,750 with replacement at half price after 6-8 years.
• Ecowaterjet Water-Saving Shower System Funnel-shaped shower insert that creates a turbulent water-air mixture via vacuum effect, saving up to 50% water and energy while maintaining full shower comfort. Saves approximately EUR 400/year for a 4-person household and EUR 13,000/year for a 100-room business hotel. Sold through ecowaterjet.com online shop and deployed at hospitality customers including Ritz-Carlton Berlin, Belmond La Residencia Mallorca, Hotel Enzian Hochsölden, GenoHotel Baunatal, and Boutiquehotel Stadthalle Wien.
• Energy from Wastewater Systems Wastewater heat recovery systems for heating, cooling, and hot water production using heat exchangers and heat pumps. Deployed at E+E Electronics (40% total energy consumption reduction, 1.4 million kWh/year savings), Tulln Town Hall (75 kW heating, 100 kW cooling), Vio Plaza Vienna Meidling (1.2 MW district heating, 6 MW cooling since 2024), Vienna Canal Blumental (161 kW heating, 530 kW cooling since 2021), Joh. Kepler University Hospital Linz (50 kW plate heat exchanger for canteen wastewater), and Stadtwerke GAV Amstetten (186 kW heating since 2014).
• APESS Energy from Exhaust Air Systems Heat and cold recovery systems from exhaust air using the APESS system, reducing energy consumption in ventilation systems by up to 85%.
• Water Treatment and Disinfection Systems Custom water treatment systems including filter systems for manganese, iron, and arsenic removal, reverse osmosis systems (up to 100 m³/h), ultra/nanofiltration, Watersprint D4 UV LED disinfection, OPTIFIL automatic backwash filtration, and MHP hydrophysical water treatment (cavitation/negative pressure bacteria destruction compliant with VDI 2047-2).
• Pipe Renovation and Testing Technology Trenchless pipe rehabilitation services covering tube liner, Primus-Line, Close-Fit Lining, Burst Lining, pipe relining, pressure pipe renovation (DN 150-1200mm), house connection renovation with milling robots, and pipe inspection/testing technology.
• Vertiliner Manhole and Tank Rehabilitation System Manhole and tank rehabilitation using ECR glass fiber sheets with light-curing polyester or vinyl ester resin for trenchless renovation; UV-cured installation with high chemical resistance and long service life.
• Biological Grease Trap Solvent Natural bacteria and vitamin-based solvent that breaks down fats and oils in grease separators and wastewater systems, reducing cleaning costs and eliminating odor issues.
• Construction and Real Estate Services Full-service construction delivery for residential, commercial, and agricultural buildings (single-family houses, semi-detached houses, residential buildings, office/commercial buildings, agricultural buildings, halls, extensions, and renovations); timber construction and carpentry; painting and floor coating; earthmoving and transportation; exterior design including stone retaining walls; and real estate development (subsidized and privately financed condominiums, terraced houses, semi-detached houses).
• Municipal Services Ongoing services for Austrian municipalities and road maintenance authorities including winter service, ditch clearing and verge maintenance, mowing work, shaft frame renovation, transport services, pipeline construction, and fiber optic cable installation.
• Rabmer Workspace Office Rental Furnished, flexible office space rental in Altenberg bei Linz with complete infrastructure, high-speed internet, meeting rooms, and parking. Individual offices available from EUR 250/month including operating costs (plus VAT).

Quantifiable outcome

• Up to 50% water and energy savings in shower applications
• +6 more outcomes

Named customers18 records

Segments3 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Five partnerships are on record, tiered core and minor.

• act4.energycoreStrategic or Co-development PartnerIndustry association membership for energy sector collaboration and market development in renewable energy and environmental technology
• Thermaflex Green Energy LabcoreStrategic or Co-development PartnerInnovation network for developing and promoting green energy solutions including wastewater energy recovery technologies
• Österreichischer Wasser- und Abfallwirtschaftsverband (ÖWAV)minorStrategic or Co-development PartnerAustrian Water and Waste Management Association for industry networking and best practice exchange
• Wärmepumpe AustriaminorStrategic or Co-development PartnerAustrian heat pump association for technology collaboration and market development in heat pump applications
• Österreichische Gesellschaft für Nachhaltige Immobilienwirtschaft (ÖGNI)minorStrategic or Co-development PartnerAustrian association for sustainable real estate economics and green building practices

Scale indicators9 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• Wavin N.V. Global provider of pipe and water-management solutions including drainage, sewer rehabilitation, and stormwater management. Comparable to Rabmer's pipe renovation and water-infrastructure business as part of a broader building-and-infrastructure portfolio.
• Xylem Inc. Global water-technology company providing wastewater treatment, transport, and energy-recovery solutions. Directly overlaps with Rabmer's wastewater energy recovery, pump, and treatment offerings at vastly greater scale, including municipal customers.
• Georg Fischer AG: Swiss industrial company manufacturing pipe systems, fittings, and water-flow solutions for building technology and infrastructure. Comparable to Rabmer's pipe rehabilitation, water distribution, and construction-related offerings at much larger scale.
• Veolia Water Technologies: Worldwide provider of municipal and industrial water and wastewater treatment systems. Comparable to Rabmer's water-treatment and wastewater energy-recovery businesses but as part of a much larger environmental-services portfolio.
• Watts Water Technologies: Global manufacturer of water quality, conservation, and limescale/corrosion-protection products including inline treatment devices. Comparable to Rabmer's AQUABION and water-treatment systems but operating at far larger scale across plumbing, HVAC, and industrial channels.
• Pentair plc: Global water-treatment company producing filtration, softening, and reverse-osmosis systems for residential, commercial, and industrial customers. Overlaps with Rabmer's water-treatment, disinfection, and filtration product family.
• Uponor Corporation: European leader in pipe systems for water, heating, and infrastructure, including trenchless pipe rehabilitation offerings. Comparable to Rabmer's pipe renovation, real-estate plumbing, and building-water-hygiene product lines.

Direct peers

• Caleffi S.p.A. Italian SME manufacturer of components for heating, plumbing, and water treatment including limescale-protection and hydraulic balancing devices. Closely comparable family-built European cleantech specialist with proprietary branded product lines sold internationally.
• ACO Group: European family-owned drainage and water-management specialist offering surface drainage, grease separation, and wastewater products. Comparable mid-sized family business with similar cleantech-product + construction-channel mix to Rabmer.
• JUDO Wasseraufbereitung GmbH: German SME specializing in building-scale water treatment, limescale protection, and filtration systems. Directly comparable niche competitor to Rabmer's AQUABION and water-treatment portfolio with similar scale and Central-European DACH focus.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/rabmer-bau-gruppe

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries6 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 Rabmer Holding Gmbh