What HTS GmbH Ludwigshafen does

HTS GmbH Ludwigshafen (operating as Diehl GmbH / Diehl Apleona Wolfferts) is a German technical building systems (Technische Gebäudeausrüstung, TGA) specialist headquartered in Ludwigshafen with approximately 600 employees distributed across eight regional locations in Rheinland-Pfalz, Hessen, and Thüringen. Founded in 1930, the company delivers full-scope building services spanning heating, cooling, ventilation and air conditioning, sanitation, electrical engineering, and measurement-control-regulation (MSR/building automation) systems for both new construction and retrofit projects. Its customer base spans commercial and institutional segments — including industrial, healthcare, office, retail, logistics, infrastructure, hospitality, and education — alongside a private-customer (B2C) service book.

The business operates an integrated in-house workforce across multiple trades rather than subcontracting, which supports end-to-end project execution from planning and engineering through installation, commissioning, and after-sales service and maintenance. Differentiating technical credentials include GTGA and VDI certification, refrigeration certification, and PQ VOB prequalification for public-sector tenders. The company has positioned energy consulting, decarbonization, and renewable heating technologies (heat pumps, etc.) as a growing service line, aligning with Germany's building-energy transition (GEG/EnEfG) demand drivers. It also runs structured apprenticeship and dual-study ("Duales Studium") programs, signaling a deliberate talent-pipeline buildout.

Commercially, revenue is generated through three project types: (1) one-off new-build and retrofit installations contracted with general contractors, developers, and direct clients; (2) recurring service and maintenance contracts providing annuity-like cash flow; and (3) private-customer residential work. In April 2024, the company was acquired by Apleona (within the Apleona Wolfferts Gruppe), providing access to group-level resources, cross-selling into Apleona's facility-management client base, and capital for regional consolidation — most recently evidenced by the strengthening of its Bad Sobernheim branch in March 2026.

Name

HTS GmbH Ludwigshafen

Legal name

Diehl GmbH

Website

https://hts-gmbh.de

Company type

Private

Founded year

1930

Operating status

Operating

Headcount range

1–10 employees

Short description

HTS GmbH Ludwigshafen (Diehl/Apleona Wolfferts) is a German technical building systems specialist with ~600 employees across eight regional locations, delivering heating, cooling, ventilation, electrical, and building automation services to commercial, institutional, and residential clients.

Ownership category

akta.pro rank

Product category

Building Technical Services (TGA - Technische Gebäudesysteme)

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Plumbing, Heating, and Air-Conditioning Contractors (23822)

SIC

General Bldg Contractors - Nonresidential Bldgs (1540), Refrigeration & Service Industry Machinery (3580)

akta.pro primary industry

HVAC & Refrigeration Contracting (IMAFALAB)

akta.pro secondary industries

HVAC Installation, Service & Repair (IMAIABAA), HVAC Service, Maintenance & Repair (BPABACAA), Building Thermal Controls & Building Management Systems (HVAC BMS) (IMAHAKAK), HVAC System Replacement & Change-Outs (HSAOAGAB)

Keywords

• Technical building systems
• HVAC installation services
• Building automation
• Heating systems integration
• Energy consulting services

Headquarters

HQ city

Baumholder

HQ country

Germany

HQ region

Europe

Offices8 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Installation and Construction Services: Project-based installation services for new construction and renovation projects covering heating, cooling, ventilation, sanitation, electrical, and building automation systems
2. Service and Maintenance: Ongoing service and maintenance contracts for installed building technology systems
3. Planning and Consulting: Technical planning, project management, and energy consulting services

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

HTS GmbH Ludwigshafen operates as a regional branch of Diehl Apleona Wolfferts, providing technical building systems services (TGA - Technische Gebäudesysteme) covering heating, cooling, ventilation, sanitation, electrical, and building automation for both commercial and residential customers. The company delivers end-to-end project execution from planning and energy consulting through installation to ongoing service and maintenance, acting as a single point of contact for all building trades.

Product overview

Diehl Apleona Wolfferts (which includes HTS Ludwigshafen as one of eight locations) is a building technical systems provider offering comprehensive services for both business customers and private homeowners. The company delivers intelligent building technology from a single contact partner across all trades. The portfolio includes core service categories spanning heating systems (BHKW, fuel cells, solar thermal, heat pumps), ventilation and air conditioning, cooling/refrigeration, MSR/electrical systems, photovoltaics, sanitary and media systems, swimming pool technology, and fire protection/sprinkler systems. Additional services include project development, project management, energy consulting, and technical building equipment (TGA) planning. The company employs approximately 600 staff and serves customers across industries including industry, residential construction, healthcare, offices, retail, logistics, infrastructure, hotels and leisure, and education.

Differentiator

Problem solved

Functional benefit

Products and services

• Heating Systems (Heizung) Heating solutions including combined heat and power (BHKW), fuel cells, solar thermal, and heat pumps for residential and commercial buildings. Covers installation, commissioning, and service.
• Ventilation and Air Conditioning (Lüftung & Klima) Ventilation and climate control systems providing air quality management and temperature regulation for buildings.
• Refrigeration and Cooling (Kälte) Refrigeration and cooling systems for commercial and industrial applications.
• MSR and Electrical Systems (MSR / Elektro) Measurement, control, and regulation (MSR) systems and electrical installations for building automation, control, and intelligent networking.
• Photovoltaic Systems (Photovoltaik) Solar photovoltaic installations for on-site electricity generation, available for both business and residential customers.
• Sanitary and Media Systems (Sanitär / Medien) Sanitary installations and media supply systems for buildings.
• Swimming Pool Technology (Schwimmbadtechnik) Swimming pool, sauna, steam bath, and thermal facility systems for residential and commercial properties.
• Fire Protection and Sprinkler Systems (Brandschutz & Sprinkleranlagen) Fire protection systems and sprinkler installations for building safety and regulatory compliance.
• Project Development (Projektentwicklung) Development of construction projects from concept through planning phases.
• Project Management (Projektmanagement) Professional management of construction and renovation projects from planning to execution.
• Energy Consulting (Energie-Beratung) Energy consulting services to optimize energy efficiency and sustainability in buildings.
• TGA Planning (TGA-Planung) Technical building equipment (TGA) planning services covering all building systems.
• Service and Maintenance (Service & Wartung) Ongoing service and maintenance contracts for all installed building technical systems.
• Comfort and Smart Home (Komfort & Smart Home) Smart home integration and comfort controls for private residential customers.
• Bath and Wellness (Bad & Wellness) Bathroom, swimming pool, sauna, steam bath, and thermal installations for private residential customers.

Segments10 records

Ideal customer profiles2 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.

• Apleona Wolfferts Gruppeparent companyOthersDAW is an integral part of the Apleona Wolfferts Gruppe, providing regional coverage and corporate backing. The parent company acquired the Diehl Group in April 2024, strengthening capabilities in building technology and decarbonization with over 550 employees and 7 locations.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Caverion Deutschland: Pan-European HVAC, refrigeration, and building technical systems specialist with significant German operations. Directly comparable in multi-trade TGA service offering, recurring maintenance model, and B2B customer orientation.
• Caverion: Parent group of Caverion Deutschland. Northern European HVAC and building technology services specialist with multi-trade TGA capabilities. Directly comparable in service model, recurring service revenue mix, and integrated MEP delivery.
• S+B Gruppe: German MEP contractor offering HVAC, plumbing, electrical, and building automation services. Closely comparable in multi-trade TGA service offering, German mid-market focus, and project + recurring revenue model.
• Otto Building Technologies: German MEP contractor specializing in technical building equipment (TGA) including HVAC, refrigeration, and electrical. Closely comparable in service mix, project-based model, and operational scope to DAW.

Regional players

• Gegenbauer: Berlin-headquartered German facility and building services group with HVAC, electrical, and technical building services. Comparable in multi-trade TGA offering but with Berlin-based regional orientation vs. DAW's Rhineland-Palatinate core.

Broad incumbents

• Bilfinger: German industrial services provider with significant HVAC and mechanical services for industrial and commercial clients. Comparable in industrial HVAC, refrigeration, and building automation scope, though broader industrial services focus.
• Dussmann Group: German facility management and technical building services provider. Comparable in delivering heating, cooling, ventilation, and electrical services as part of integrated building operations, with substantially larger scale and broader service portfolio.
• ENGIE Deutschland: Major German energy and facility services provider with extensive HVAC, heating, and building technology services. Overlaps with DAW across heating, ventilation, and integrated facilities management but operates at much larger scale and across broader service portfolio.
• Wisag: Large German facility management and building services group offering HVAC, electrical, and technical building services. Comparable in service breadth and multi-trade capability, with broader geographic coverage and integrated FM offerings.

Others

• Stiebel Eltron: German manufacturer of heating, heat pump, and hot water systems. Adjacent rather than direct competitor — supplies equipment that DAW installs and services. Related via overlapping heat-pump and heating technology agenda.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/diehlapleonawolfferts
• LinkedInlinkedin.com/company/hts-gmbh-ludwigshafen
• Instagraminstagram.com/diehlapleonawolfferts

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

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 HTS GmbH Ludwigshafen