NESS Heat Technology

What NESS Heat Technology does

NESS Wärmetechnik GmbH (trading as NESS Heat Technology) is a German, family-owned industrial engineering firm founded in 1964 in Remshalden near Stuttgart, now in its second generation of family management under Dr. Andreas J. Ness and Dietmar B. Ness. The company designs, manufactures, and commissions custom industrial process heat systems for enterprise customers, with core offerings spanning thermal oil heating systems (Wärmeträgerölanlagen), gas/oil/biomass-fired heaters, electric heaters, steam and hot water plants, biomass-fired heating plants, heat recovery, heat exchangers, secondary circuits, special installations, and industrial piping. Its technology centers on thermal fluid (Wärmeträgeröl) heat transfer, in which it self-identifies as a pioneer, and the company bundles its own engineered components (expansion tanks, pump stations, economizers, air preheaters, emergency coolers, control cabinets) into integrated turnkey packages. Supporting the main systems is the proprietary 'NESSessities' accessories line covering filtration, light-ends removal, VOC removal, nitrogen blanketing and on-site generation, pump monitoring and venting, water-mist fire suppression, and mobile testing/cooling equipment, plus an in-house electrical engineering capability that has begun to ship SPS function blocks for plant instrumentation.

The business model is project-based B2B enterprise sales with no retail or e-commerce channel; NESS engages customers from feasibility and 3D-scanning through engineering, manufacturing, installation, and commissioning, and monetizes one-time equipment sales together with recurring engineering, modernization, operator training, oil analysis, rental, and maintenance services. Revenue streams are therefore a mix of capital equipment (one-time license-style) and professional services. The customer base is concentrated in wood-based panels manufacturing (EGGER Group, Sonae Arauco, ARAUCO USA, Unilin Panels), district heating (Stadtwerk Tauberfranken biomass heat and power for over a decade), and other medium-sized industrial combustion plant operators affected by the German 44. BImSchV emissions and efficiency regime, with documented project delivery across Germany, Austria, France, and the United States and stated reach across all continents. Go-to-market combines direct enterprise field sales with active participation at major industry trade fairs (LIGNA, ACHEMA), a multilingual content and social presence (German, English, Russian, French website; LinkedIn, YouTube, Instagram, Facebook, Xing; newsletter with whitepapers), and a partnership ecosystem spanning DECHEMA, TÜV SÜD, Siemens, KSB, Ari-Armaturen, Allweiler, Syntegon, Eastman, KRAHN Chemie, IPCO, Küchner Wärmetauscher, and VAIS. The company holds ISO 9001 quality certification (renewed 2018 and 2021), ASME pressure equipment approval (held continuously since 2001), IITR data protection certification, and has received the German Brand Award 2025, Fair Company 2026, and kununu TOP COMPANY recognition for five consecutive years.

Name

NESS Heat Technology

Legal name

NESS Wärmetechnik GmbH

Website

https://ness.de

Company type

Private

Founded year

1964

Operating status

Operating

Headcount range

101–250 employees

Short description

NESS Wärmetechnik GmbH is a family-owned German industrial engineering firm, founded 1964, that designs and commissions custom thermal oil, biomass, fired, and electric process heat systems plus lifecycle accessories for enterprise customers in wood-based panels, district heating, and other industrial sectors, with project delivery across Europe and the United States.

Ownership category

akta.pro rank

Product category

Industrial Process Heating Equipment

NAICS

Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Power Boiler and Heat Exchanger Manufacturing (33241), Industrial Process Furnace and Oven Manufacturing (333994)

SIC

Heating Equipment, Except Electric & Warm Air Furnaces (3433), Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430)

akta.pro primary industry

Boilers, Furnaces & Process Heating Equipment (IMAHAKAD)

akta.pro secondary industries

Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC), Chillers, Boilers & Central Plant Operations (BPABACAG)

Keywords

• Industrial process heat
• Thermal oil systems
• Biomass heating plants
• Heat transfer technology
• Industrial heating equipment

Headquarters

HQ city

Denzlingen

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Industrial Process Heat Equipment Sales: Design, manufacture, and sale of complete thermal oil heating systems, biomass plants, fired heaters, electric heaters, steam/hot water systems, heat exchangers, and special installations. Equipment is customized for each customer's specific industrial process requirements.
2. Engineering and Project Services: Complete engineering services including plant planning (Anlagenplanung), electrical engineering (Elektroengineering), and technical project management from concept through commissioning. Includes feasibility studies, 3D scanning of existing facilities, and investment budget determination.
3. Plant Optimization and Modernization: Upgrading and modernizing existing process heat installations. Services include operator training (Betreiberschulungen), energy efficiency optimization, and conversion projects (e.g., from gas to biomass).
4. Service and Maintenance: Oil analysis (Ölanalyse) services, rental equipment (Mietanlagen), and ongoing technical support for installed systems.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels7 records

Core offering

NESS Wärmetechnik designs, manufactures, and commissions industrial process heat systems, with thermal oil (Wärmeträgeröl) heating plants, biomass-fired heating plants, fired heaters, electric heaters, steam/hot water systems, heat exchangers, heat recovery systems, secondary circuits, and custom special installations at the core. The offering is delivered as turnkey projects from plant planning and electrical engineering through installation, commissioning, optimization, and ongoing service, supplemented by a 'NESSessities' line of system accessories (fine filtration, light-ends removal, VOC removal, nitrogen blanketing, pump monitoring, fire suppression, and mobile testing equipment).

Product overview

NESS Wärmetechnik is a full-service provider of industrial process heat solutions, offering a comprehensive portfolio of thermal systems and accessories. The core product line centers on thermal oil heating systems (Wärmeträgerölanlagen), fired heaters (gas/oil/biomass), electric heaters, biomass plants, and combined heating/cooling systems, complemented by steam/hot water systems, heat recovery, heat exchangers, and custom special installations. The company also provides complete engineering, plant planning, electrical engineering, plant optimization, operator training, and energy efficiency services. Supporting the main systems is the 'NESSessities' line of accessories including fine filter stations (FF500), light-ends removal (NALD250), VOC removers, nitrogen blankets/generators, pump monitoring/venting, fire extinguishing systems, and mobile testing/cooling equipment. Founded in 1964, the company has over 50 years of experience in heat transfer technology for industrial processes across all continents.

Differentiator

Problem solved

Functional benefit

Products and services

• Wärmeträgerölanlagen (Thermal Oil Systems) Thermal oil heating systems for industrial process heat applications, integrating expansion and collection tanks, pump stations, heat exchangers, economizers, air preheaters, emergency coolers, control cabinets and complete regulation systems; offered to industrial manufacturers requiring custom-engineered process heat plants.
• Befeuerte Erhitzer (Fired Heaters) Gas, oil or biomass-fired heaters for generating process heat in industrial applications, sold to manufacturers needing reliable direct-fired heating capacity.
• Elektrische Erhitzer (Electric Heaters) Electrically powered heaters for process heat generation, used where direct or indirect electric heating is the preferred approach for industrial customers.
• Biomasseanlagen (Biomass Plants) Biomass-fired heating plants utilizing wood chips, sawdust, waste wood, or landscape maintenance materials for sustainable process heat, sold to industrial customers transitioning from fossil fuels to renewable energy sources.
• Heiz-Kühlanlagen (Heating and Cooling Systems) Combined heating and cooling systems for industrial processes that require both thermal input and active cooling, delivered as engineered installations to manufacturing customers.
• Dampfanlagen / Heißwasseranlagen (Steam Systems / Hot Water Systems) Steam generation and hot water systems for process heat and industrial applications, supplied as engineered plants to industrial customers.
• Sekundärkreise (Secondary Circuits) Secondary circuit systems for distributing thermal energy from primary heat sources to multiple consumers within industrial process heat installations.
• Wärmerückgewinnung (Heat Recovery)

Quantifiable outcome

• 10,000 tonnes of fossil CO2 saved annually per installation (e.g., EGGER Unterradlberg biomass conversion)
• +3 more outcomes

Named customers5 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Twelve partnerships are on record, tiered core and minor.

• VAIS (Verband für Angewandte Innovationsforschung e.V.)coreStrategic or Co-development Partner · 1 December 2025NESS is an active member of VAIS and participated in the VAIS Year-End Event 2025 in Düsseldorf. Dominik Weidler presented on fast-response biomass systems. VAIS focuses on innovation and competitiveness for German industry.
• DECHEMAcoreStrategic or Co-development Partner · 1 August 2024NESS participated at ACHEMA 2024 and conducted expert interviews with DECHEMA representatives. DECHEMA is the German society for chemical engineering and the biotech industry, organizing the leading ACHEMA trade fair.
• Kühner Wärmetauscher GmbH & Co. KGcoreStrategic or Co-development Partner · 1 August 2024Heat exchanger supplier for NESS projects, specifically mentioned for biomass emergency cooler applications. NESS relies on Kühner heat exchangers for customized cooling solutions.
• TÜV SÜDminorImplementation/ SI/ Consulting Partner · 1 August 2024NESS conducted expert interview with TÜV SÜD representatives at ACHEMA 2024. TÜV SÜD provides testing, inspection, and certification services for industrial equipment.
• KSB CompanyminorStrategic or Co-development Partner · 1 August 2024Pump manufacturer partner interviewed at ACHEMA 2024. KSB provides industrial pumps and valve systems used in process heat installations.
• EGGER GroupcoreStrategic or Co-development Partner · 1 August 2024Long-term customer partner for process heat solutions. Joint project for thermal oil heating with biomass at Unterradlberg site saves 10,000 tonnes of fossil CO2 annually. EGGER is committed to Net Zero mission.
• Ari-Armaturen Albert Richter GmbH & Co. KGminorStrategic or Co-development Partner · 1 August 2024Armature manufacturer interviewed at ACHEMA 2024. ARI provides industrial valve and control solutions for process engineering applications.
• AllweilerminorStrategic or Co-development Partner · 1 August 2024Pump manufacturer interviewed at ACHEMA 2024. Allweiler specializes in industrial pumping solutions for various process applications.
• SyntegonminorStrategic or Co-development Partner · 1 August 2024Process technology company interviewed at ACHEMA 2024. Syntegon provides packaging and processing technology solutions.
• IPCO ABminorStrategic or Co-development Partner · 1 August 2024Industrial equipment manufacturer interviewed at ACHEMA 2024. IPCO provides processing equipment for various industrial applications.
• KRAHN Chemie GroupminorStrategic or Co-development Partner · 1 August 2024Chemical distributor interviewed at ACHEMA 2024. KRAHN specializes in specialty chemicals for industrial applications.
• EastmanminorStrategic or Co-development Partner · 1 August 2024Chemical company interviewed at ACHEMA 2024. Eastman produces specialty chemicals and advanced materials for industrial applications.

Scale indicators5 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Fulton Companies: Global manufacturer of industrial boilers and heat transfer equipment including thermal fluid heaters. Comparable to NESS in thermal fluid heating and industrial boiler technology, with a broader multi-product portfolio.
• Cleaver-Brooks: North American manufacturer of boiler and heat transfer products serving industrial and commercial customers. Comparable to NESS in industrial boiler and heat exchanger manufacturing, with full system integration at larger scale.
• Weishaupt: German manufacturer of industrial burners, heating systems, and heat pumps serving industrial and commercial process heat customers. Comparable to NESS in burner-based process heat and industrial heating, with a stronger incumbent position in burner tech.
• Bosch Industriekessel: Bosch's industrial boiler division manufactures industrial heating systems and process steam boilers for industrial and commercial customers. Directly comparable to NESS in manufacturing industrial boilers and heat-transfer equipment, though at substantially larger scale and broader geographic reach.
• Viessmann Industrial Solutions: A large German-headquartered industrial heat and boiler manufacturer operating globally across commercial and industrial heat. Comparable to NESS as a German industrial heating equipment OEM serving process heat customers, but with materially larger scale and a broader portfolio.

Direct peers

• SAACKE: German-headquartered specialist in industrial burners, combustion systems, and process heat equipment for industrial customers. Closely comparable to NESS as a specialized German industrial process heat equipment manufacturer with international project delivery.
• VYNCKE: Belgian-based designer and manufacturer of biomass-fired energy and heat plants for industrial customers. Directly comparable to NESS in biomass-fired thermal oil/heating plants, particularly for wood-based panels and process industries.
• Sigma Thermal: US-based provider of industrial process heating solutions including thermal fluid heaters, fired heaters, and waste heat recovery. Directly comparable to NESS in thermal oil systems, fired heaters, and process heat engineering services.
• Wanson Company: European thermal engineering specialist in thermal oil heaters, hot water and steam boilers. Directly comparable to NESS as a niche thermal oil system manufacturer with industrial process heat focus.
• Polytechnik: Austrian manufacturer of biomass combustion plants and thermal oil systems for industrial process heat. Directly comparable to NESS in biomass thermal oil heating, especially for wood-based materials and MDF production.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCDhnohU-u-vr6G2SDUw0dbQ/featured
• Facebookfacebook.com/Ness-W%C3%A4rmetechnik-Gmbh-249899805090354
• LinkedInlinkedin.com/company/ness-wärmetechnik-gmbh
• Instagraminstagram.com/ness_waermetechnik

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 NESS Heat Technology