Klaus Heuser Gmbh

What Klaus Heuser Gmbh does

Klaus Heuser GmbH is a German family-owned technical building equipment (TGA) contractor founded in 1977 and headquartered in Koblenz. The company designs, installs, and services five integrated disciplines: heating (Heizung), ventilation (Lüftung), refrigeration and air conditioning (Kälte Klima), measurement-control-regulation / building automation (MSR-Technik), and pipeline construction (Rohrleitungsbau). It operates as a unified specialist contractor rather than a product vendor, bundling these capabilities into integrated project deliveries for industrial firms, commercial customers, public institutions, and healthcare providers. The workforce exceeds 100, of which more than 70 are field technicians/mounters, with several employees having served the company for over 40 years.

The customer base spans a diversified logo list including industrial manufacturers (BOMAG, Stabilus, ZF, SGL Group, LTS, Lohmann, Niedax, Canyon), federal ministries and the Bundesrechnungshof, large commercial accounts (1&1, Debeka, H&M, Dorint), and multiple hospital systems. The company is DVGW-certified and pre-qualified for gas, water, drainage, air conditioning, and building automation — credentials that gate access to regulated German public-sector procurement. Geographic scope is concentrated in the greater Koblenz-Cologne/Bonn metropolitan area.

The business model is project-based B2B enterprise services: revenue is generated through quotations on installation, modernization, and maintenance projects, with multi-decade framework relationships functioning as recurring anchors. Pricing is not publicly disclosed. Following founder Klaus Heuser's death in late 2021, leadership passed to his daughter Silke Weltzien; Christoph Schmitz joined as co-Managing Director in September 2023, and four new partner-shareholders from the company's apprenticeship pipeline entered management in January 2025 — a succession structure that broadens internal ownership without external capital.

Name

Klaus Heuser Gmbh

Legal name

Klaus Heuser GmbH

Website

https://heuser-koblenz.de

Company type

Private

Founded year

1977

Operating status

Operating

Short description

Klaus Heuser GmbH is a family-owned German technical building equipment contractor in Koblenz, designing, installing, and servicing heating, ventilation, air conditioning, refrigeration, building automation, and pipeline systems for industrial, commercial, public-sector, and healthcare clients in the greater Koblenz-Cologne/Bonn region.

Ownership category

akta.pro rank

Product category

Technical Building Equipment (HVAC)

NAICS

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

akta.pro primary industry

HVAC & Refrigeration Contracting (IMAFALAB)

akta.pro secondary industries

HVAC Installation, Service & Repair (IMAIABAA), Commercial HVAC/R Installation (Rooftop Units, Split Systems) (HSAOAGAH)

Keywords

• HVAC services
• Building automation systems
• Industrial ventilation
• Heating installation
• Technical building equipment

Headquarters

HQ city

Koblenz

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

Revenue model

1. Project-based HVAC services: Revenue generated through large-scale installation and maintenance projects for industrial, commercial, public, and healthcare facilities. Services include heating, ventilation, air conditioning, refrigeration systems, and building automation.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Klaus Heuser GmbH plans, installs, and services technical building equipment for industrial, commercial, public-sector, and healthcare facilities across the greater Koblenz-Cologne/Bonn region. Its five integrated service lines are ventilation, heating, refrigeration/air conditioning, MSR (building automation), and pipeline construction, delivered by a workforce of over 70 technicians. The company is DVGW-certified and pre-qualified for gas, water, drainage, and air-conditioning/building automation work.

Product overview

Klaus Heuser GmbH is a family-owned HVAC (Heizung, Lüftung, Klima) company with over 45 years of experience in technical building equipment (technische Gebäudeausrüstung). The company operates as a unified service provider offering five integrated core services: Lüftung (ventilation), Heizung (heating), Kälte Klima (refrigeration/air conditioning), MSR-Technik (measurement, control and regulation/building automation), and Rohrleitungsbau (pipe construction). These services are offered as an integrated package for industrial, commercial, public, and healthcare clients in the Koblenz-Köln/Bonn region, with DVGW-certified gas and water technology capabilities.

Differentiator

Problem solved

Functional benefit

Products and services

• Lüftung (Ventilation)

Named customers21 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• EPG Baskets KoblenzminorGTM or Marketing Partner · 1 January 2021Klaus Heuser GmbH sponsors the EPG Baskets Koblenz basketball team on their 'Next level' mission. The partnership began in season 21/22 (2021/2022) and continues through season 25/26, providing regional brand visibility and community engagement.

Scale indicators4 records

Recent moves6 records

Expansion highlights3 records

Direct peers

• ROM Technik GmbH & Co. KG: German HVAC and building-services contractor covering heating, ventilation, refrigeration, building automation, and pipeline construction. Offers the same five-trade integration (Heizung, Lüftung, Klima, MSR, Rohrleitungsbau) for industrial, commercial, and public clients.
• Caverion Deutschland GmbH: German subsidiary of Nordic-listed Caverion, delivering TGA (heating, ventilation, cooling, plumbing, electrical, building automation) across industrial, public, and healthcare facilities. Same integrated-service TGA model and end markets as Klaus Heuser, but operating at significantly larger scale.
• GA-tec Gebäude- und Anlagentechnik GmbH: Mid-size German technical building services contractor offering HVAC, refrigeration, MSR/building automation, and piping for industrial, commercial, public, and healthcare clients. Closely comparable in size, service scope, and B2B project-based delivery model to Klaus Heuser.

Broad incumbents

• Apleona GmbH: German facility services and technical building management company with HVAC, refrigeration, MSR, and energy services for industrial, public, and healthcare clients. Overlaps with Klaus Heuser on integrated TGA installations and long-term maintenance contracts.
• Dussmann Group: Large German facility and technical building services provider covering HVAC, building automation, and energy management for industrial, public, and commercial clients. Same service profile and customer verticals as Klaus Heuser, but at multi-region scale.
• Gegenbauer Holding GmbH & Co. KG: German technical facility services group providing HVAC, refrigeration, electrical, and building-automation services across healthcare, public, and commercial real estate. Comparable end-market mix and service bundling to Klaus Heuser.
• ENGIE Deutschland GmbH: Major German energy and technical services provider offering HVAC/R, building automation, and facility management. Competes head-to-head with Klaus Heuser on hospital, industrial, and public-sector projects, especially around energy-efficiency retrofits.
• WISAG Gebäudetechnik GmbH: One of Germany's largest technical facility services and HVAC/MEP contractors, providing installation, service, and maintenance of heating, ventilation, refrigeration, and building automation across all sectors. Same service lines as Klaus Heuser, but multi-regional and substantially larger.

Others

• Viessmann Group: Major German/European manufacturer of heating, industrial, and refrigeration systems. Supplier-adjacent to Klaus Heuser on heating/Klima hardware, while increasingly competing via installer and service programs tied to climate-system sales.
• Stiebel Eltron GmbH: Leading German manufacturer of heat pumps, heating, ventilation, and hot-water systems. Acts as a key equipment supplier/installer network for HVAC contractors like Klaus Heuser and a vertical competitor for end-customer energy-transition projects.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/klaus-heuser-gmbh

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 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 Klaus Heuser Gmbh