Krobath Group

What Krobath Group does

Krobath Group is a fifth-generation Austrian family enterprise headquartered in Feldbach, Styria, operating since 1880 through the holding company Krobath Beteiligungs- und Finanzierungsgesellschaft m.b.H. Following the 2017 management buyout of Krobath Gebäudetechnik und Service GmbH, the group is organized around three operating divisions: Krobath protech GmbH (moisture- and demand-controlled ventilation systems, ventilation cleaning, and civil-defense shelter technology), Energie-Contracting Krobath Ges.m.b.H. together with ECON Projektmanagement GmbH (energy contracting including heat and cold supply for residential, commercial, and municipal facilities, with the proprietary eGain weather-forecast-based heating regulation), and Krobath Immobilien GmbH with Allegro Immobilien GmbH and Aedes GmbH (real estate management). The group employs more than 200 people in its energy-services division alone and manages energy supply for approximately 150 objects covering 330,000+ m² of floor area.

Its technical core is a portfolio of sensor-driven building-technology products built around the proprietary HYGROSTAR humidity-controlled supply-and-exhaust ventilation system, complemented by Silvento ec single-room extractor fans, centralized and decentralized heat-recovery ventilation, basement ventilation, constant volume flow regulators, central vacuum systems (CAxpir), and ABC-protection shelter technology. These are delivered alongside AERECO demand-controlled ventilation components under a 20+ year exclusive partnership. Underlying mechanics include hygroscopic nylon-band sensors for passive humidity control, EC motor technology for low-wattage fans, silicone-membrane flow regulators, and GSM/3G-delivered weather forecasting for predictive heating regulation.

The business model combines project-based B2B installation revenue (ventilation systems sold directly to building contractors, architects, and developers) with multi-year managed-service revenue from energy contracting—often structured as a "Rund-um-Sorglos-Paket" covering planning, financing, construction, operation, maintenance, and billing, with 24/7 hotline service. Customers are predominantly Austrian social-housing cooperatives, institutional real-estate investors, private developers, and municipal clients such as Stadt Wien - Wiener Wohnen, Stadt Graz, ÖSW AG, Bank Austria Real Invest, VENTA Real Estate, STUWO, and BWST. Pricing is quote-based and not publicly disclosed; commercial activity is concentrated in Austria, with legacy historical subsidiaries in Central/Eastern Europe and Nigeria.

Name

Krobath Group

Legal name

Krobath Beteiligungs- und Finanzierungsgesellschaft m.b.H.

Website

https://krobath.com

Company type

Private

Founded year

1880

Operating status

Operating

Headcount range

1–10 employees

Short description

Krobath Group is a fifth-generation Austrian family enterprise (founded 1880, Feldbach) operating Krobath protech (demand-controlled ventilation), Energie-Contracting Krobath (managed heat/cold supply), and Krobath Immobilien (real estate management) for Austrian housing associations, developers, and municipalities.

Ownership category

akta.pro rank

Product category

Building Technology and Energy Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Real Estate Property Managers (53131)

SIC

Auto Controls For Regulating Residential & Comml Environments (3822), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

HVAC Zoning, Smart Dampers & Ventilation Control (HSAOANAB)

akta.pro secondary industry

HVAC Controls & Optimization (Smart Thermostats, VAV, Chillers/Boilers Controls) (BPABAGAB)

Keywords

• Building ventilation systems
• Energy contracting services
• HVAC systems
• Residential heat recovery
• Real estate management

Headquarters

HQ city

Feldbach

HQ country

Austria

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Energy Contracting: Energy-Contracting Krobath and ECON Projektmanagement provide complete energy services for buildings including planning, construction, operation and maintenance of building technology systems, and financing. Services are provided under long-term contracts with guaranteed proper functioning of installed systems.
2. Ventilation Systems Installation: Krobath protech sells and installs moisture-controlled ventilation systems for residential buildings including planning, construction, and installation services for new builds and renovations.
3. Real Estate Management: Krobath Immobilien, Allegro Immobilien, and Aedes manage the company's own real estate properties including rental and administration of commercial and residential buildings.
4. Ventilation Cleaning and Maintenance: Duct cleaning, inspection, and maintenance services for ventilation systems according to Austrian and German standards (ÖNORM H6021, VDI 6022).

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Krobath Group is a fifth-generation Austrian family enterprise operating three divisions: Krobath protech sells and installs moisture- and demand-controlled residential ventilation systems (including proprietary HYGROSTAR, Silvento ec, and heat recovery units); Energie-Contracting Krobath and ECON Projektmanagement provide full-service energy contracting (planning, construction, financing, operation, and maintenance of heating and cooling systems); and Krobath Immobilien, Allegro Immobilien, and Aedes manage the group's own commercial and residential real estate.

Product overview

Krobath Group operates as a diversified Austrian family enterprise (founded 1880) with three main divisions: Krobath protech GmbH specializes in moisture- and demand-controlled residential ventilation systems; Energie-Contracting Krobath Ges.m.b.H. (alongside ECON Projektmanagement GmbH) provides comprehensive energy services including heating, cooling, and weather-predictive control; and Krobath Immobilien GmbH manages real estate properties. The ventilation division's core product is the HYGROSTAR system—a humidity-controlled, demand-driven supply and exhaust air solution—complemented by the Silvento ec single-room extractor fan, centralized ventilation with heat recovery, basement ventilation, and decentralized heat recovery units (e², Nexxt). The energy services division offers eGain forecasting™ for weather-based heating control and complete HVAC contracting services. The portfolio also includes civil defense shelter technology (Schutzraumtechnik), constant volume flow regulators, and ventilation cleaning services.

Differentiator

Problem solved

Functional benefit

Brands

• Krobath protech: Specialized in moisture- and demand-controlled ventilation systems for residential buildings, ventilation cleaning, and civil protection technology.
• Krobath econ Energy Services
• ECK (Energie-Contracting Krobath)
• ECON Projektmanagement
• Krobath Immobilien
• Allegro Immobilien

Products and services

• HYGROSTAR Proprietary humidity- and demand-controlled central supply and exhaust ventilation system for residential buildings. Uses hygroscopic nylon band sensors that expand/contract based on relative humidity to mechanically control air valves without electricity, automatically adjusting fresh air supply based on moisture levels and number of occupants to prevent condensation and mold.
• Silvento ec Individual room extractor fan featuring humidity and temperature control, automatic summer-winter switching, LED filter monitoring, and EC motor technology delivering 1.8-6.2W at 15/60 m³/h flow rate with maximum pressure difference of 400 Pa. Used for moisture and mold prevention in individual rooms.
• Wohnraumlüftung mit Wärmerückgewinnung Centralized supply and exhaust ventilation system with heat recovery for residential buildings. Features high-efficiency heat exchangers, EC fans, and integrated air filters for energy-efficient ventilation in new builds and renovations.
• Kellerlüftung Basement ventilation system with humidity and temperature sensors that automatically control airflow to prevent moisture, condensation, mold, and radon exposure in residential basements.
• Zentralstaubsaugeranlagen (CAxpir) CAxpir Comfort central vacuum system for single and multi-family homes that collects dust in a central suction unit located outside living areas, eliminating fine microdust release into rooms and benefiting allergy sufferers.
• Schutzraumtechnik Civil defense shelter technology including planning, equipment, and installation of ABC protection rooms with combined HEPA and gas filter systems, blast doors, radiation shielding, and 2-week autonomous operation capability for nuclear, biological, and chemical defense applications.
• Volumenstromregler Constant volume flow controllers with self-regulating silicone membranes that stabilize exhaust air flow at desired levels without requiring electrical or pneumatic connections. Operates in pressure ranges of 50-200 Pa or 150-600 Pa.
• Dezentrale Wärmerückgewinnung (e², Nexxt) Decentralized ventilation units with heat recovery for wall installation. e² variant uses regenerative heat exchange; Nexxt uses counterflow or crossflow heat exchangers. Achieves up to 90.6% heat recovery efficiency for individual room or apartment ventilation.
• AERECO Lüftungssysteme Demand-controlled supply and exhaust air elements from AERECO (20+ year authorized partnership) meeting klimaaktiv criteria for minimum fresh air volume and individual humidity control in residential and commercial buildings.
• Lüftungsreinigung (Ventilation Duct Cleaning) Professional ventilation duct cleaning service using camera inspection, rotating brush system with vacuum suction, and documentation per ÖNORM H6021 and VDI 6022 standards for residential and commercial buildings.
• eGain forecasting™ Weather forecast-controlled heating regulation system that uses meteorological data from professional weather services to predict building thermal behavior and optimize heating. Transmits weather forecasts via GSM/3G to a forecast receiver that replaces conventional outdoor sensors, with real-time customer portal access.
• Wärme und Kälte (Heizung/Klima) Energy Contracting Complete heating and cooling energy solutions including planning, installation, operation, and maintenance of building HVAC systems with financing options and 24/7 hotline service (HOTLINE-COLDLINE). Offered as energy contracting packages under multi-year agreements with guaranteed system performance.
• Real Estate Management (Krobath Immobilien, Allegro Immobilien, Aedes) Real estate management services covering rental and administration of commercial and residential buildings owned by the Krobath Group, including the Allegro-Park development with commercial buildings, storage spaces, and newly constructed residential units.

Quantifiable outcome

• Over 330,000 m² of managed floor area worldwide
• +2 more outcomes

Named customers19 records

Segments5 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

One partnership is on record.

• AERECOcoreTechnology or IntegrationAERECO is a global leader in demand-controlled ventilation with headquarters and production in France (Marne la Vallée) and approximately 350 employees. Krobath protech and AERECO have maintained a partnership for over 20 years. AERECO supply and exhaust air components meet klimaaktiv criteria for energy savings and indoor air quality. Krobath protech integrates AERECO products into their HYGROSTAR systems and complete ventilation solutions.

Scale indicators5 records

Recent moves16 records

Expansion highlights5 records

Broad incumbents

• Wien Energie: Austria's largest regional energy utility and a major provider of heating/cooling contracting and building energy services in Vienna; competes with Energie-Contracting Krobath for municipal and large-housing-association contracts.
• Bosch Thermotechnik: Subsidiary of Bosch providing heating, hot water, and ventilation solutions across Europe; comparable as a broad-portfolio HVAC incumbent active in the same Austrian residential and commercial market segments.
• Vaillant Group: European HVAC incumbent (Vaillant, Saunier Duval, Bulex brands) active across heating, ventilation, and heat pumps; comparable in serving residential and commercial building customers in the DACH region and providing integrated climate-control solutions.
• Stiebel Eltron: German heating, ventilation, and heat-pump manufacturer with significant Austrian sales; comparable as a residential HVAC incumbent whose products overlap with Krobath's installation scope in new-build and renovation projects.
• Viessmann: Large German HVAC and heat-system manufacturer with strong Austrian market presence; competes with Krobath's heating and energy contracting offerings and serves overlapping residential and commercial customers, but operates as a broad portfolio incumbent rather than a specialist.
• Imtech (VINCI Energies): Major European building services and technical facility management provider, including HVAC installation and energy services; comparable as a broad incumbent with deeper scale that competes for larger Austrian and DACH building-technology contracts.

Regional players

• KELAG: Austrian regional energy utility providing heat supply, energy services, and contracting in southern Austria near Krobath's Feldbach base; comparable in offering building heating contracting and competing for the same regional municipal and commercial customers.

Others

• BUWOG Group: One of Austria's largest residential property developers and managers; comparable as an Austrian real estate operator that buys building services and energy contracting from suppliers like Krobath, making it a customer-side peer rather than a direct competitor.

Direct peers

• ENGIE Austria (formerly Cofely): Austrian arm of global energy services group ENGIE; directly comparable as a multi-site energy contracting and building technology operator serving commercial and municipal clients in Austria, competing with Energie-Contracting Krobath for the same long-term contracting deals.
• Aereco: French pioneer in demand-controlled ventilation and Krobath protech's 20+ year technology partner; operates in the same humidity-controlled ventilation category with overlapping product functionality (supply/exhaust elements, klimaaktiv-aligned systems).

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/Energie-Contracting-Krobath-GesmbH-399641997274103

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Krobath Group