Gustav Blenk

What Gustav Blenk does

Gustav Blenk GmbH is a third-generation, family-owned technical building-services company headquartered in Berlin, founded in 1929. It plans, installs, and maintains ventilation and room-air systems (RLT), refrigeration and air-conditioning systems including heat pumps, mechanical smoke-extraction and fire-protection systems (mRWA/RDA), humidification/dehumidification systems, and measurement/control plus building-automation (MSR/GLT) solutions for commercial, industrial, institutional, gastronomy, and private-residential clients in Berlin and Brandenburg. The company holds German construction pre-qualification (PQ-Nr. 101.000172), performs F-Gas regulation leak testing, and conducts VDI 6022 hygiene-compliant maintenance, making it eligible for regulated public-sector and safety-critical work.

The business is organized into three integrated teams — Büro (office/planning), Service (maintenance and 365-day emergency response), and Anlagenbau (plant construction and commissioning). Operations are delivered exclusively through direct field engagement; the company operates no e-commerce or self-serve channel and routes all commercial engagement through dedicated web inquiry forms. It trains approximately 60 apprentices per year across two trades (Anlagenmechaniker SHK and Mechatroniker für Kältetechnik), operates a Notdienst emergency hotline available outside business hours, and executes more than 700 maintenance visits per year across Berlin & Brandenburg. Marketing is web- and referral-led, supplemented by Instagram/Facebook presence and memberships in the Gesamtverband Gebäudetechnik (VGT) and Innung SHK trade associations.

Revenue is generated through two streams: one-time project-based installation and commissioning of new HVAC, refrigeration, and smoke-extraction systems, and recurring maintenance/service contracts on the installed base. The company does not disclose financial figures publicly. No proprietary software platform, AI/ML capability, external funding, or acquisition activity is indicated in the source material; the firm is led by Managing Director Andreas Mainert (B.Eng), Operations Manager Andreas Blenk (Dipl. Ing, third generation), and Prokurist/Service Manager Kai Petzold, and is incorporated as Gustav Blenk Gesellschaft für gewerbehygienische und lüftungstechnische Anlagen m.b.H. (HRB 32520).

Name

Gustav Blenk

Legal name

Gustav Blenk Gesellschaft für gewerbehygienische und lüftungstechnische Anlagen m.b.H.

Website

https://blenk-berlin.de

Company type

Private

Founded year

1929

Operating status

Operating

Short description

Gustav Blenk GmbH is a third-generation, family-owned HVAC specialist founded in 1929 in Berlin. It plans, installs, and maintains ventilation, refrigeration, air-conditioning, smoke-extraction, and building-automation systems for commercial, industrial, public-sector, and residential clients across Berlin and Brandenburg.

Ownership category

akta.pro rank

Product category

HVAC and Building Technical Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Auto Controls For Regulating Residential & Comml Environments (3822), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Steam & Air-Conditioning Supply (4961)

akta.pro primary industry

HVAC Installation, Service & Repair (IMAIABAA)

akta.pro secondary industries

Commercial HVAC Maintenance Agreements & PM Programs (HSAOAHAJ), HVAC Controls & Optimization (Smart Thermostats, VAV, Chillers/Boilers Controls) (BPABAGAB), Chillers, Boilers & Central Plant Operations (BPABACAG)

Keywords

• Ventilation system installation
• Air conditioning services
• Refrigeration technology
• Smoke extraction systems
• Building automation MSR

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Project-based installation and construction: One-time revenue from planning, constructing, and commissioning new ventilation, air conditioning, refrigeration, smoke extraction, humidification, and MSR systems for commercial, industrial, and public clients. Projects range from small exhaust systems to complex RLT full air conditioning systems with heat recovery.
2. Recurring maintenance and service contracts: Ongoing revenue from regular maintenance of installed systems. The company performs over 700 annual maintenance visits across Berlin and Brandenburg, covering ventilation systems, RLT, VRF and chilled water systems, heat pumps, smoke extraction systems, underground car park ventilation, exhaust systems, MSR/GLT control technology, and VDI 6022 hygiene inspections. An emergency hotline operates 7–21 hours for maintenance customers.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Gustav Blenk plans, installs, and maintains technical building equipment — ventilation systems (RLT), air conditioning and refrigeration including heat pumps, mechanical smoke extraction (mRWA/RDA), humidification/dehumidification systems, and measurement, control and regulation (MSR/GLT) building automation — for commercial, industrial, public-sector, gastronomy, and residential customers across Berlin and Brandenburg. The company also provides recurring preventive maintenance (over 700 visits annually) and a 365-day emergency service for installed systems.

Product overview

Gustav Blenk is a third-generation family-owned HVAC (heating, ventilation, air conditioning) service company offering an integrated portfolio of technical building services. The company provides six core service areas: Lüftungstechnik (RLT) for ventilation and room air technology, Kälte- & Klimatechnik mit Wärmepumpen for refrigeration and air conditioning including heat pumps, Entrauchung & Brandschutz (mRWA/RDA) for smoke extraction and fire protection, Be- & Entfeuchtung for humidification and dehumidification, MSR/Regeltechnik for measurement/control systems and building automation, and Wartung & Service for ongoing maintenance. Services span planning, installation, construction, commissioning, and long-term maintenance for commercial, industrial, and residential clients across Berlin and Brandenburg.

Differentiator

Problem solved

Functional benefit

Products and services

• Lüftungstechnik (RLT) Planning, installation, construction, and maintenance of ventilation (RLT) systems — from small exhaust systems to complex full air conditioning systems with heat recovery (WRG) — for residential spaces, offices, commercial buildings, commercial kitchens, schools, underground garages, and industrial facilities across Berlin and Brandenburg.
• Kälte- & Klimatechnik, Wärmepumpen Professional refrigeration and air conditioning solutions ranging from split units to VRF systems and chilled water systems, including heat pump installations, along with F-Gas Regulation-compliant leak testing and ongoing maintenance for commercial, industrial, and residential clients.
• Entrauchung & Brandschutz (mRWA / RDA) Planning, construction, and maintenance of mechanical smoke extraction systems (mRWA/RDA) for underground car parks, commercial buildings, and public facilities, including pressure ventilation systems, emergency escape route systems, and standards-compliant function testing.
• Be- & Entfeuchtung Installation and maintenance of humidification and dehumidification systems for industry, museums, technical rooms, offices, and sensitive production areas, ensuring optimal air humidity to protect materials, machinery, and personnel.
• MSR / Regeltechnik Custom-developed measurement, control, and regulation (MSR) and building management system (GLT) solutions that monitor, control, and optimize HVAC and refrigeration plant operating points for maximum efficiency, energy savings, and operational safety.
• Wartung & Service Comprehensive maintenance and emergency service for installed ventilation, climate, refrigeration, and MSR/GLT systems across Berlin and Brandenburg, including over 700 annual maintenance visits and a 7–21 hours emergency hotline for maintenance customers covering RLT, VRF and chilled water systems, heat pumps, smoke extraction systems, underground garage ventilation, exhaust systems, MSR/GLT, and VDI 6022 hygiene inspections.

Quantifiable outcome

• Over 700 annual maintenance visits across Berlin & Brandenburg
• +1 more outcomes

Named customers1 record

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Three partnerships are on record, tiered minor.

• Gesamtverband Gebäudetechnik e.V. (VGT)minorOthersIndustry trade association membership providing networking, industry representation, and credibility within the German building technology sector. The association's website is vgt-az.de.
• Innung SHK (Sanitär-Heizung-Klima)minorOthersMembership in the local trades association for sanitary, heating, and climate technology. Provides access to apprenticeship standards, training frameworks, and industry representation in Berlin.
• CreditreformminorOthersCredit information and business reporting service membership, used for credit assessment of customers and business partners.

Scale indicators5 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• Caverion Deutschland: German subsidiary of the Nordic Caverion Group, providing technical building services including HVAC, refrigeration, and building automation across multiple regions. Comparable because it competes for the same commercial, industrial, and public-sector HVAC installation and maintenance work, but at a much larger national scale.
• WISAG: One of Germany's largest technical facility-management and building-services groups, with dedicated HVAC, refrigeration, and building-automation capabilities. Comparable because it offers the same integrated install-plus-maintenance HVAC service model to commercial and industrial clients, albeit as part of a much broader national FM portfolio.
• ENGIE Deutschland: German arm of the global ENGIE Group, providing technical building services, HVAC, energy, and facility-management solutions. Comparable in that it delivers HVAC installation, refrigeration, and energy-efficiency services to commercial and public-sector customers, but with substantially broader geographic reach and a wider service portfolio than Gustav Blenk.
• Gegenbauer Gruppe: Berlin-headquartered building-services and facility-management group with HVAC, technical building services, and energy-optimization offerings. Comparable because it serves the same Berlin/Brandenburg commercial and public-sector market with overlapping technical building services, though at a much larger corporate scale.
• Dussmann Group: International facility-services group with a German technical-building-services arm covering HVAC, refrigeration, and building automation. Comparable in delivering integrated HVAC and refrigeration services to commercial clients, but with a national and international footprint that Gustav Blenk lacks.
• Stiebel Eltron: Major German manufacturer of heat pumps, ventilation, and hot-water systems with associated installer and service networks. Comparable as a dominant supplier-side player in the same heat-pump and ventilation categories Gustav Blenk installs and services, though focused on equipment rather than regional contracting.
• Vaillant Deutschland: Leading German heating and heat-pump manufacturer with a nationwide installer partner network. Comparable in that it drives a large share of the same heat-pump and HVAC equipment Gustav Blenk installs and maintains, but operates as an equipment OEM and brand-led partner program rather than a regional service contractor.
• Bosch Home Comfort (Bosch Thermotechnik): German arm of Bosch's heating, ventilation, and hot-water division, producing HVAC and heat-pump equipment and managing an installer/service partner ecosystem. Comparable as a major incumbent shaping the same HVAC and heat-pump equipment landscape Gustav Blenk services, though primarily as an OEM and brand owner rather than a direct installation contractor.

Emerging players

• Thermondo: Berlin-based scale-up specializing in standardized heat-pump and heating installations for residential and small commercial customers. Comparable because it directly overlaps with Gustav Blenk's heat-pump and climate-control offering, but competes on a digital, standardized installation model versus Gustav Blenk's traditional project-and-service approach.
• 1Komma5°: German energy-services scale-up focused on heat pumps, solar, and energy-management systems with proprietary software. Comparable because it targets the same heat-pump and energy-efficiency opportunity as Gustav Blenk, but pairs it with a digital platform and national rollout model that the incumbent lacks.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/people/Gustav-Blenk-GmbH/100064160645144
• Instagraminstagram.com/blenk.lueftung.berlin

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Gustav Blenk