Thielmann Energietechnik

What Thielmann Energietechnik does

Thielmann Energietechnik GmbH is a German manufacturer of industrial gas processing equipment, founded in 1981 and headquartered in Kassel. The company designs and builds custom-engineered gas filters, dust/liquid separators, shell-and-tube heat exchangers, pressure vessels, and supporting instrumentation for high-pressure (6 to 300 bar) and high-temperature (up to 500°C) applications. Its core technologies include counterflow tube-bundle heat exchangers (VEV/VEV-L series), a proprietary quick-release closure construction for maintenance simplification, DVGW-certified cell gas filters, and certified pressure-vessel fabrication performed exclusively in Germany.

The company sells primarily to natural gas network operators, gas storage operators, power plant operators, plant constructors, chemical and process industry players, and biogas producers. Customer concentration sits with a roster of large energy and industrial operators including Siemens Energy, Uniper, RWE, BASF, Saudi Aramco, Petrobras, OGE, Gascade, Gasunie, Fluxys, Sasol, Westnetz, and MAPNA. Revenue is generated through one-time project sales of custom-engineered equipment plus a recurring tail of spare parts and replacement filter elements. The company pursues a direct enterprise sales model supplemented by seven regional distribution partners across Europe, the Nordics, Iberia, Southern Africa, South America, and Asia-Pacific, and holds international certifications (AD2000, ASME, NACE, TEMA, PD5500, DVGW, CE, AEO-C) plus approved-supplier status at multiple global operators.

Ownership transitioned through a Management-Buy-Out in 2024, with Stefan Sperhake, a former sales engineer, acquiring the company and assuming the role of Managing Director, securing succession after a prior 2015 MBO that separated the business from the Itron/Actaris/Schlumberger corporate lineage. The company maintains a 30+ language website, an active reference base spanning 50+ countries and 1,500+ projects, and a forward-looking positioning around hydrogen and future-energy gas applications.

Name

Thielmann Energietechnik

Legal name

Thielmann Energietechnik GmbH

Website

https://gts-thielmann.de

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

11–50 employees

Short description

Thielmann Energietechnik GmbH is a Kassel, Germany-based manufacturer of custom-engineered high-pressure gas filters, dust-liquid separators, shell-and-tube heat exchangers, and pressure vessels (6–300 bar, up to 500°C), serving natural gas utilities, power plants, oil & gas majors, and process industries worldwide.

Ownership category

akta.pro rank

Product category

Industrial Gas Processing Equipment

NAICS

Power Boiler and Heat Exchanger Manufacturing (332410), Other General Purpose Machinery Manufacturing (3339)

SIC

Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564)

akta.pro primary industry

Gas Handling Equipment & Storage (Cylinders/Tanks/Valves) (IMAEACAL)

akta.pro secondary industry

Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC)

Keywords

• Industrial gas filtration
• High-pressure heat exchangers
• Dust liquid separators
• Natural gas processing equipment
• Pressure vessels manufacturing

Headquarters

HQ city

Kassel

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom equipment manufacturing: Design, manufacturing, and delivery of customized gas filtration, separation, and heat transfer equipment. Services include process engineering design, strength calculations per codes, 3D model provision for plant planning, special calculations (nozzle loads, seismic analysis), manufacturing in certified welding shops, customer documentation, and delivery.
2. Spare parts and replacement components: Supply of replacement filter elements, spare parts, and components for existing installations.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Thielmann Energietechnik GmbH designs, manufactures, and supplies customized gas filtration equipment, dust and liquid separators, shell-and-tube heat exchangers, and pressure vessels for the natural gas and technical gases industry. All equipment is engineered for high-pressure applications ranging from 6 to 300 bar and temperatures up to 500°C, with manufacturing performed exclusively in Germany. The company delivers complete solutions from process engineering design and certification through to fabrication, documentation, and global delivery.

Product overview

Thielmann Energietechnik is a manufacturer of industrial gas processing equipment based in Kassel, Germany, operating since 1981. The company produces a comprehensive portfolio of products for gas filtration, separation, heating, and pressure vessel applications. The core product lines include: (1) Dust filters and gas filters including start-up screens, filter elements, cartridge filters, and cell gas filters; (2) Dust-liquid separators including VSFA separators, VZA/VMZA cyclone separators, and VKOD knock-out drums; (3) Shell and tube heat exchangers including VEV vertical/horizontal units, VEV-Ex electric preheaters, VEV-DR safety heat exchangers, VEV-LS fuel gas heaters, and VH water bath heaters; (4) Pressure vessels including VSD absorption silencers, VGM gas mixers, VKAB condensate tanks, and VEDB expansion/buffer tanks; (5) Instrumentation and accessories including DSV lid pivoting devices, VSV quick-release fasteners, and DP900 differential pressure gauges. All products are designed for high-pressure gas applications (6 to 300 bar) and high temperatures (up to 500°C), serving the natural gas industry, gas storage facilities, power plants, and chemical/process industries worldwide.

Differentiator

Problem solved

Functional benefit

Products and services

• Dust filters and gas filters (Staubfilter, Gasfilter) Filters for removing dust particles from gas streams in natural gas and technical gas systems, designed for high-pressure applications from 6 to 300 bar. Product line includes start-up screens (Anfahrsiebe), filter elements tested to SAE Fine Test standards, cartridge filters (VPF/VSF), and DVGW-certified cell gas filters (VZF/ZFG). Used by energy utilities, network operators, and plant constructors worldwide.
• Dust and liquid separators (Staubflüssigkeitsabscheider) Separators that remove dust, liquids, and oil mist from gas streams in natural gas and process gas applications. Line includes VSFA dust-liquid separators (multiple sizes and pressure ratings), VZA/VMZA single and multi cyclone separators, and VKOD knock-out drums for liquid and solid separation. Designed for high-pressure gas service and used in pipeline and processing plant applications.
• Shell and tube heat exchangers (Rohrbündelwärmetauscher) Counterflow shell-and-tube heat exchangers for gas preheating and cooling, increasing system efficiency in natural gas and process gas installations. Range includes VEV-Ex electric preheaters for explosive environments, VEV vertical tube bundle heat exchangers, VEV-DR safety heat exchangers for critical service, VEV-LS fuel gas performance heaters, and VH water bath heaters using water or saturated steam as the heating medium. Operating envelope up to 500°C and 6–300 bar.
• Pressure vessels (Druckbehälter) Custom-built pressure vessels for natural gas and technical gas applications, manufactured in Germany per international codes (AD2000, ASME, PD5500, EN13445, EAC/TR, China-Stamp). Range includes VSD absorption silencers for noise reduction, VGM gas mixers for blending gas streams, VKAB condensate tanks, and VEDB multi-purpose expansion/buffer tanks. Designed for high-pressure gas service.
• Instrumentation and accessories (Instrumentierung und Zubehör) Supporting instrumentation and accessories for gas processing systems, including DSV lid pivoting devices for maintenance access, VSV quick-release fasteners for rapid internal access, and DP900 differential pressure gauges for monitoring filter condition. The line also covers spare parts and replacement filter elements for existing installations.

Named customers14 records

Segments6 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Seven partnerships are on record, tiered regional.

• Stendhal, s.r.o.regionalChannel Partner/ Reseller/ DistributorRegional distribution partner for Slovakia and Czech Republic. Located in Bratislava, Slovakia. Contact: [email protected], Tel: +421 (0)2 4920 8040.
• Oy Konwell AbregionalChannel Partner/ Reseller/ DistributorRegional distribution partner for Finland. Located at Ruosilantie 10, 00390 Helsinki, Finland. Contact: [email protected], Tel: +358 9 8946 480.
• AtlasGas Pty. Ltd.regionalChannel Partner/ Reseller/ DistributorRegional distribution partner for Australia and New Zealand. Located at 70 Williams Road, Dandenong South VIC 3175, Australia. Contact: [email protected], Tel: +61403268515.
• PULSO Action Plan, LdaregionalChannel Partner/ Reseller/ DistributorRegional distribution partner for Portugal. Located at Rua Doutor Felizardo Prezado dos Santos, 8, 2400-702 Leiria, Portugal. Contact: [email protected], Tel: +351 244 208 011.
• Energas Technologies (Pty) Ltd.regionalChannel Partner/ Reseller/ DistributorRegional distribution partner for South Africa. Contact: [email protected], Tel: +27-011 397 6805/9.
• Morgana Arruda Dias da Silva MEregionalChannel Partner/ Reseller/ DistributorRegional distribution partner for Brazil. Located at R Sete de Setembro - Centro, 37.190-000 Três Pontas MG, Brazil. Contact: [email protected], Tel: +55(35)92002-0073.
• BNF Engineering (S) Pte LtdregionalChannel Partner/ Reseller/ DistributorRegional distribution partner for Asia/Singapore. Located at Singapore 486781. Contact: [email protected], Tel: +65 6383 6118.

Scale indicators6 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• MAN Energy Solutions: Large German manufacturer of large-bore diesel engines, turbomachinery, and heat exchangers for power, oil & gas, and marine. Overlaps with Thielmann in heat exchangers and gas processing equipment for power plants and gas infrastructure, but operates at vastly greater scale and product breadth.
• Alfa Laval: Swedish global leader in heat transfer, separation, and fluid handling equipment serving energy, petrochemical, and process industries. Overlapping portfolio in heat exchangers and gas/liquid separation equipment, and competes in similar tenders with operators Thielmann serves.
• SPX Technologies (Heat Transfer): Global industrial equipment manufacturer whose Heat Transfer segment (including Balcke-Dürr and SPX Heat Transfer) supplies heat exchangers and air-cooled condensers to power, petrochemical, and industrial gas customers. Direct overlap in heat-exchange equipment for power and gas processing.
• Chart Industries: US-based supplier of cryogenic and process equipment for the gas industry, including heat exchangers, cold boxes, and gas processing skids. Competes in gas processing and heat transfer for LNG, natural gas, and industrial gas customers — adjacent but higher-volume cryogenic focus.
• Kelvion: Global manufacturer of industrial heat exchangers (formerly GEA Heat Exchangers), serving chemical, petrochemical, power, and oil & gas customers. Directly comparable product overlap in shell-and-tube heat exchangers for gas applications, though at significantly larger scale.
• GEA Group: German global engineering group supplying separation, homogenization, and heat transfer equipment for food, chemical, and energy customers. Competes with Thielmann in separation and heat-exchange equipment for industrial gas and chemical process applications.

Direct peers

• Hamon: Belgian-based specialist in heat exchangers, air-cooled condensers, and cooling systems for power, oil & gas, and industrial markets. Directly comparable as a focused heat-transfer specialist serving similar utility and refinery customers with engineering-intensive custom equipment.
• BORSIG GmbH: Berlin-based manufacturer of pressure vessels, heat exchangers, and process equipment for gas, chemical, and energy industries. Highly comparable as a German Mittelstand engineering firm with similar customer base in gas processing and overlapping product portfolio in pressure equipment and heat transfer.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xxing.com/pages/thielmann-energietechnik-gmbh
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Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Thielmann Energietechnik