KLU Klima-Lüftungs-Umwelt-Technik KG

What KLU Klima-Lüftungs-Umwelt-Technik KG does

KLU Klima-Lüftungs-Umwelttechnik GmbH & Co. KG is a German mid-sized HVAC, refrigeration, and building automation service provider founded in 1973 in Berlin and now headquartered in Oberkrämer OT Vehlefanz. The company delivers four integrated service lines: consulting and planning for building owners and architects; design and installation of room air technology (RLT) systems; installation of refrigeration and air conditioning systems (split units, chillers, VRV, free cooling); and ongoing maintenance and service of installed systems. Technical scope spans heating, ventilation, air conditioning, refrigeration, and measurement/control/regulation (MSR) building automation, with VDI 6022-certified hygiene personnel and a 24-hour fault service offering a 2-hour response time for critical facilities.

The company employs more than 60 engineers, technicians, draftspersons, and skilled tradespeople, all working in-house (no subcontracting), of which 19 are dedicated to the maintenance and service department. Projects are pursued across Germany and select European neighboring countries with individual contract values reaching up to €5 million. Notable enterprise customers include Jüdisches Krankenhaus Berlin, DRK Kliniken Westend Berlin, Berliner Wasserbetriebe (served since 1992), Max-Planck-Institut, Physikalisch-Technische Bundesanstalt, Vattenfall, Storck Schokoladen, McDonald's franchise locations, and NH Hotels.

KLU operates a hybrid revenue model combining project-based plant construction (one-time installation revenue) with recurring maintenance and service contracts, supported by professional consulting fees. The firm is family-owned and currently in its second generation of Stücken family management alongside managing director Daniel Ulbrich. The company has diversified into renewable energy installations, having received a non-repayable EU EFRE (RENplus 2014-2020) grant co-funded by the State of Brandenburg for a PV system with battery storage.

Name

KLU Klima-Lüftungs-Umwelt-Technik KG

Legal name

KLU Klima-Lüftungs-Umwelttechnik GmbH & Co. KG

Website

https://klu-klima.de

Company type

Private

Founded year

1973

Operating status

Operating

Headcount range

11–50 employees

Short description

KLU is a family-owned German mid-sized HVAC, refrigeration, and building automation service provider, delivering consulting, plant construction, and maintenance for healthcare, pharmaceutical, data center, and commercial facility clients across Germany and neighboring European countries.

Ownership category

akta.pro rank

Product category

Building Climate Control Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (23822)

SIC

Auto Controls For Regulating Residential & Comml Environments (3822), Steam & Air-Conditioning Supply (4961)

akta.pro industry

PRIMARYIMAFALAB

HVAC & Refrigeration Contracting

Industrials, Manufacturing & Construction/Construction & Civil Engineering/Specialty Trade Contractors (MEP, HVAC, Plumbing, Electrical)

SECONDARYBPABACAA

HVAC Service, Maintenance & Repair

Business & Public Services/Facilities Management & Building Services/Building Engineering & Technical Maintenance (MEP/HVAC)

SECONDARYHSAOAGAJ

HVAC Controls, Thermostats & Building Automation Installation

Home & Personal Services/Plumbing, Electrical & HVAC Services/HVAC Installation & Replacement

SECONDARYIMADANAH

Controls, Thermostats, Sensors & Building Automation (HVAC Controls)

Industrials, Manufacturing & Construction/Building Materials & Products/HVAC Components & Building Ventilation Products

Keywords

• HVAC systems installation
• Refrigeration system services
• Building automation MSR
• Ventilation maintenance services
• Cleanroom climate control

Headquarters

HQ city

Oberkrämer OT Vehlefanz

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Plant construction and installation: Design, planning, and installation of HVAC systems for new construction and renovations. Projects include hospital systems, pharmaceutical facilities, hotels, restaurants, and commercial buildings. Project-based revenue with individual project values up to €5 million.
2. Maintenance and service contracts: Ongoing maintenance, inspection, and repair services for climate and cooling systems. Includes 24-hour emergency services. Service department employs 19 staff members. Recurring revenue through service agreements.
3. Consultation and planning services: Technical consulting and planning services for building owners and architects from project inception. Includes energy-efficient solutions and regulatory compliance.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

KLU is a medium-sized service company providing complete HVAC, refrigeration, and building automation services across four areas: (1) consulting and planning for building owners and architects, (2) design and construction of room air technology (RLT) systems, (3) installation of refrigeration and air conditioning systems including chillers, VRV, split and free cooling systems, and (4) ongoing maintenance with 24-hour emergency service. All work is performed by in-house engineers, technicians and skilled workers serving hospitals, pharmaceutical facilities, data centers, hotels, cultural institutions and commercial buildings in Germany and neighboring European countries.

Product overview

KLU is a medium-sized service company providing comprehensive climate, refrigeration, and control technology services. The company operates as a unified service organization with four main offerings: (1) Beratung und Planung – consulting and planning for building owners and architects; (2) Anlagenbau von Raumlufttechnischen Anlagen – design and installation of ventilation and air handling systems for hospitals, pharmaceutical facilities, hotels, and special buildings; (3) Installation von Kälteanlagen – installation of refrigeration and air conditioning systems including chillers, VRV systems, and split units; and (4) Instandhaltung – maintenance and service with 24-hour emergency support. All work is performed by the company's own staff of over 60 employees including engineers, technicians, and skilled workers.

Differentiator

Problem solved

Functional benefit

Products and services

• Beratung und Planung (Consulting and Planning) Technical, economic and pricing consultation for building owners and architects covering HVAC, refrigeration and control systems from project conception through to completion.
• Anlagenbau von Raumlufttechnischen Anlagen (HVAC Plant Construction) Design, planning and installation of room air technology (RLT) systems for hospitals, pharmaceutical facilities, hotels, restaurants, museums, studios and other commercial buildings, with individual project values up to €5 million.
• Installation von Kälteanlagen (Refrigeration and Air Conditioning Installation) Installation of refrigeration and air conditioning systems including split units, liquid chillers, VRV systems, and free cooling systems for data centers, commercial buildings and residential applications.
• Instandhaltung von Raumlufttechnischen Anlagen (HVAC Maintenance and Service) Ongoing maintenance, inspection and repair services for climate and cooling systems with 19 service staff, VDI 6022 certified personnel for hygiene regulations, refrigerant handling and fire protection damper testing, and an optional 24-hour emergency service with 2-hour response time.

Quantifiable outcome

• Service since 1992 for Berliner Wasserbetriebe central data center
• +2 more outcomes

Named customers15 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators7 records

Recent moves1 record

Expansion highlights5 records

Direct peers

• Gegenbauer: Berlin-headquartered building and technical services provider offering HVAC, refrigeration, and facility management across Germany — same regional base and comparable service portfolio to KLU.
• ENGIE Deutschland: Large German subsidiary of ENGIE providing HVAC, refrigeration, and building services to commercial and public-sector customers, including hospitals and data centers; competes with KLU for similar regulated-environment service contracts.
• WISAG: Major German facility-services and HVAC contractor delivering installation, service, and energy solutions for industrial, commercial, and healthcare clients — directly comparable to KLU's HVAC contracting, refrigeration, and 24-hour service model at a much larger scale.
• Caverion Deutschland: Nordic-origin building solutions and HVAC contractor with German operations covering design, installation, and lifecycle service of climate, cooling, and automation systems — direct overlap with KLU's RLT, Kälte, and MSR offering.
• Apleona Germany: One of Germany's largest facility-management and technical-building-services groups (formerly Bilfinger), providing HVAC and energy services to hospitals, industry, and commercial real estate — comparable end markets and service scope.

Broad incumbents

• Daikin Germany: German arm of the global HVAC OEM, increasingly offering direct installation and service of its refrigeration and air-conditioning systems — competes with KLU on equipment and increasingly on service agreements.
• VINCI Facilities Deutschland: Facility-management arm of VINCI in Germany, bundling HVAC, electrical, and energy services under multi-year contracts; competes with KLU for hospital and commercial service agreements as part of a broader FM portfolio.
• Bosch Thermotechnik / Bosch Service: Manufacturer and service provider of heating, cooling, and ventilation systems with a German service network; overlaps with KLU in commercial HVAC, building automation, and energy-efficient heating retrofits.
• Sodexo Facility Services: Global facility services group with HVAC and technical-maintenance offerings in Germany, primarily competing on integrated FM contracts rather than standalone HVAC projects — broader portfolio but overlapping customer base.

Emerging players

• Stiebel Eltron: German heat-pump and HVAC manufacturer expanding into commercial and project business; relevant as an adjacent player whose growing service and installation network intersects KLU's market for efficient heating and ventilation.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/klu-klima-l%C3%BCftungs-umwelt-technik-kg

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 KLU Klima-Lüftungs-Umwelt-Technik KG