Alois Muller

What Alois Muller does

Alois Müller GmbH (Alois-Müller-Gruppe) is a privately held, family-owned German Mittelstand company specializing in energy and building technology. Founded in 1973 in Ungerhausen, Bavaria, the company has grown to roughly 1,100 employees operating across 13 branch locations in Germany. Its service and product offering spans the full technical building equipment (Technische Gebäudeausrüstung, TGA) stack — heating, ventilation, plumbing, refrigeration, and electrical systems — alongside industrial plant construction. On the residential side it delivers heat pumps, pellet heating, boilers, photovoltaic systems, e-mobility charging infrastructure, bathroom/sanitary installation, climate technology, and well/irrigation systems. For industrial and municipal customers it provides integrated energy solutions including its proprietary Energy Unit, Mobile Energy, and Salzero Water product lines, plus conception, planning, and energy contracting services. The company also operates a CO2-neutral Green Factory initiative and runs the Energy Academy training program.

Revenue is generated through four streams: building technology services (installation, service, maintenance), industrial plant construction (engineering and construction for commercial customers), energy solutions hardware sales (heat pumps, PV, pellet systems, Mobile Energy units), and contracting services (long-term energy management and operation of building/industrial systems). The go-to-market motion is sales-led and direct, with field service delivered through the 13 branches covering Bavaria and other German regions; pricing is project-based with custom quotations rather than published price lists. The customer base is hybrid B2B/B2C, segmented across private homeowners (residential installations), industry and trade customers (enterprise TGA projects), and municipalities (public-sector energy infrastructure). The company is managed by three Geschäftsführer (Andreas Müller, Steffen Müller, Markus Schramm), with a layered corporate structure comprising Alois Müller Holding GmbH & Co. KG as the intermediate holding, Alois Müller GmbH as the operating company, and Müller Service GmbH as a wholly owned service subsidiary.

The competitive positioning combines traditional trade craftsmanship (Handwerk) with industrial-scale engineering execution, a hybrid model that has supported 50+ years of continuous operation. The firm sources its technology stack from established enterprise vendors (SAP, Microsoft, Google Cloud, Brevo, Friendly Captcha) and operates standard digital channels via its corporate website, LinkedIn, and Instagram. No venture capital, private equity, or institutional investor involvement is evident, and the company has not disclosed revenue, funding events, or M&A activity in the input data.

Name

Alois Muller

Legal name

Alois Müller GmbH

Website

https://alois-mueller.com

Company type

Private

Founded year

1973

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Alois Müller is a German family-owned energy and building technology company with ~1,100 employees and 13 branches, delivering HVAC, electrical, photovoltaic, and industrial TGA solutions to private homeowners, commercial/industrial customers, and municipalities across Germany.

Ownership category

akta.pro rank

Product category

Energy & Building Technology Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Refrigeration & Service Industry Machinery (3580), Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430)

akta.pro primary industry

HVAC & Industrial Ventilation (Chillers, AHUs, Exhaust, Filtration) (EUAEAFAE)

akta.pro secondary industries

Commercial HVAC/R Installation (Rooftop Units, Split Systems) (HSAOAGAH), HVAC Service, Maintenance & Repair (BPABACAA), Onsite Low-Carbon Heat & CHP (Electrified CHP, Fuel Cells, Renewable CHP) (EUABAJAI), Microgrid, DER & Building Electrification Energy Controls (Solar/Storage/EV Load Orchestration) (BPABAGAJ)

Keywords

• Building technology services
• Industrial plant construction
• HVAC installation
• Photovoltaic solutions
• Energy contracting

Headquarters

HQ city

Ungerhausen

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Building Technology Services: Comprehensive energy and building technology services including installation, service, and maintenance for heating, ventilation, air conditioning, plumbing, refrigeration, and electrical systems
2. Industrial Plant Construction: Industrial plant engineering and construction services for commercial and industrial customers
3. Energy Solutions: Innovative energy solutions including heat pumps, pellet heating, solar PV systems, energy units, mobile energy, and Salzero Water technology
4. Contracting Services: Conception, planning and energy contracting services for buildings and industrial facilities

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Alois Müller provides comprehensive energy and building technology (Technische Gebäudeausrüstung, TGA) services covering heating, ventilation, sanitation, refrigeration, and electrical systems (Heizung, Lüftung, Sanitär, Kälte, Elektro) for private homeowners, as well as industrial plant construction and energy contracting for commercial, industrial, and municipal customers. The company sells and installs renewable energy solutions including heat pumps, pellet heating, photovoltaic systems, and e-mobility infrastructure, and offers proprietary solutions such as Energy Unit, Mobile Energy, and Salzero Water treatment technology.

Product overview

Alois-Müller-Gruppe is a medium-sized, family-owned company (founded 1973) with approximately 1,100 employees and 13 branches, specializing in energy and building technology services as well as industrial plant engineering. The company operates under the motto 'Energie im Fokus' (Energy in Focus) providing heating, ventilation, sanitation, refrigeration, and electrical systems (Heizung, Lüftung, Sanitär, Kälte, Elektro). The product portfolio includes residential services (Wärmepumpen, Pelletheizungen, Kessel- und Energiesysteme, E-Mobilität Infrastruktur, Photovoltaik-Lösungen, Bad & Sanitär, Klimatechnik, Brunnen- und Bewässerungstechnik) and business/industrial offerings (Technische Gebäudeausrüstung/TGA, Energy Unit, Mobile Energy, Salzero Water, Konzeption/Planung/Contracting). The company also operates a CO2-neutral Green Factory initiative.

Differentiator

Problem solved

Functional benefit

Brands

• Energy Unit: Business division for energy solutions
• Mobile Energy
• Salzero Water
• Green Factory
• Energy Academy

Products and services

• Heat Pumps (Wärmepumpen)

Named customers3 records

Segments2 records

Ideal customer profiles2 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.

• Allianz Deutschland AGminorOthersAllianz Deutschland AG provides professional liability insurance for Alois Müller. Coverage is worldwide excluding USA and Canada.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Emerging players

• Stiebel Eltron: German heat pump and hot water technology manufacturer. While Alois Müller installs Stiebel Eltron-branded products, both firms serve the same residential and commercial decarbonization buyers, creating channel overlap rather than direct service competition.
• Vaillant Group: German heating and heat pump manufacturer with strong residential installer network. Alois Müller is a likely installer-channel partner; both address the same residential Heizungstausch buyer and Energiewende regulation-driven demand.
• Viessmann (Carrier Climate Solutions EMEA): Global heating and heat pump manufacturer (now part of Carrier) with deep German installer channels. Comparable end-customer overlap in residential and commercial heating markets, though operates as product manufacturer rather than installer.

Direct peers

• ENGIE Deutschland: German subsidiary of French utility ENGIE offering technical building services, energy contracting, and decarbonization solutions to industrial and municipal customers. Direct overlap with Alois Müller's Konzeption, Planung & Contracting and Energy Unit offerings.
• SPIE Deutschland & Zentraleuropa: German arm of French SPIE S.A., providing multi-technical building services (HVAC, electrical, plumbing) and industrial services across Germany. Closest large-scale analog to Alois Müller's TGA and industrial plant engineering model with multi-trade technical services and recurring maintenance.
• WISAG Industrie Service: Major German technical facility services provider covering HVAC, electrical, plumbing, refrigeration and industrial maintenance with national branch footprint. Competes with Alois Müller for industrial and commercial TGA contracts and recurring service revenue.
• Gegenbauer Holding: Berlin-based building and technical facility services group operating across Germany with HVAC, electrical, plumbing, and integrated facility management. Comparable mid-to-large German TGA/FM player focused on commercial and industrial clients.

Broad incumbents

• Bosch Thermotechnik (Buderus / Bosch Home Comfort): German heating and hot water solutions manufacturer including Buderus brand. Alois Müller likely installs Bosch/Buderus equipment; both serve the same German residential and commercial heating replacement market driven by Energiewende regulation.
• Remondis Maintenance & Services: German circular economy and facility services group providing building, HVAC, and industrial maintenance. Larger and broader portfolio than Alois Müller but competes for industrial and municipal technical service contracts.
• Dalkia GmbH: German subsidiary of EDF focused on energy services, district heating, CHP, and industrial energy efficiency. Overlaps with Alois Müller's Energy Unit, Mobile Energy, and Contracting offerings but at a larger industrial utility scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/alois-m%C3%BCller-gmbh/?originalSubdomain=de
• Instagraminstagram.com/aloismuellergmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries2 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 Alois Muller