What LTG does

LTG Aktiengesellschaft is a 100-year-old German air-technology manufacturer headquartered in Stuttgart with production in Weil der Stadt and a wholly-owned US subsidiary (LTG Incorporated) in Spartanburg, South Carolina. The company operates two divisions: Raumlufttechnik (room air technology) supplying air-water systems, air diffusers, and air distribution solutions for building climate control, and Prozesslufttechnik (process air technology) supplying fans (cross-flow, axial, and radial), modular filter and humidification systems, and airstream simulators for industrial applications. Its core engineering competencies include high-efficiency fan design (up to 89% efficiency), aerodynamic impeller and housing development for low-noise operation, and 300+ reference wind-tunnel airstream simulator installations serving WLTP, RDE, SC03, CFR §1066, and WMTC vehicle testing programs. The product portfolio is supported by in-house testing and development in Zuffenhausen and spans standardized series (VQS, VQC, VQ, VSR, VRS, VRK, VAN, VAR, VAH) as well as customized engineered systems.

The company serves industrial B2B customers across automotive (emissions/aerodynamic test labs and OEMs), printing and paper, textile/nonwoven, and commercial/residential building HVAC. Its go-to-market is sales-led: direct sales teams and technical consultants in Germany and the United States, complemented by 20 country representations through international sales partners. Revenue is generated primarily through one-time hardware sales of equipment and custom-engineered system solutions, with pricing handled via individual quotation on multi-year contracts rather than public list pricing. The company holds DIN EN ISO 9001:2015 certification (TÜV Süd, valid through November 15, 2027) and co-founded the 'Fan Replacement Makes It Efficient' industry initiative to promote energy-efficient fan retrofits.

LTG is structured as an independent German Aktiengesellschaft with no identified parent, venture capital, or private equity investors. Leadership is led by CEO Dipl.-Ing. Andreas Egelseder and Supervisory Board Chairman Dr. Franz Wimpffen. Across its three sites the company employs approximately 160 people (per scale commentary), operating as a stable, privately-held Mittelstand industrial manufacturer with multi-decade customer relationships and a regulated, project-driven revenue model.

Name

LTG

Legal name

LTG Aktiengesellschaft

Website

https://ltg.de

Company type

Private

Founded year

1924

Operating status

Operating

Headcount range

51–100 employees

Short description

LTG is a 100-year-old German air-technology manufacturer supplying fans, filters, humidification systems, and automotive airstream simulators to industrial B2B customers across automotive testing, printing, textile, and building-HVAC markets through direct sales and 20 country sales partners.

Ownership category

akta.pro rank

Product category

Industrial Ventilation Equipment

NAICS

Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415)

SIC

Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

Ventilation, Ducting & Air Distribution Equipment (IMAHAKAG)

akta.pro secondary industries

Fans, Blowers & Ventilation Units (Supply/Exhaust/Inline) (IMADANAB), Dampers, Louvers & Ventilation Controls (IMADANAD), HVAC & Industrial Ventilation (Chillers, AHUs, Exhaust, Filtration) (EUAEAFAE)

Keywords

• Industrial ventilation systems
• Process air technology
• Room air conditioning
• Airstream simulators
• Fan manufacturing

Headquarters

HQ city

Stuttgart

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Industrial ventilation equipment sales: Sale of air handling equipment including fans, filter systems, humidification technology, and airstream simulators. Products range from standard components to customized customer-specific solutions.
2. Custom system solutions: Engineering and delivery of complete wind test stands and specialized air systems for automotive, printing, textile and other industrial applications. Includes engineering services for system design.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

LTG manufactures and sells industrial air technology equipment organized in two divisions: Raumlufttechnik (room air technology) supplying air-water systems, air diffusers and air distribution components for commercial and residential buildings, and Prozesslufttechnik (process air technology) supplying cross-flow, axial and radial fans, modular filter and humidification systems, and airstream simulators for automotive wind tunnel and emissions-compliance testing. Products range from standard components to fully customized, customer-specific system solutions backed by in-house engineering, CFD simulation and commissioning services.

Product overview

LTG AG is a 100-year-old German air technology company offering two main product lines: Raumlufttechnik (room air technology) and Prozesslufttechnik (process air technology). The Raumlufttechnik division provides air-water systems, air diffusers, and air distribution solutions for building climate control. The Prozesslufttechnik division offers a comprehensive portfolio of fans (cross-flow, axial, and radial), filter and humidification systems, and airstream simulators for industrial applications. The company also provides engineering services including process analysis, CFD simulation, and commissioning support. Products are sold under various series designations (VQF, VAF, VRSF, VQS, VQC, VQ, VSR, VRS, VRK, VAN, VAR, VAH) and specific model numbers for different applications.

Differentiator

Problem solved

Functional benefit

Products and services

• LTG Raumlufttechnik (Room Air Technology) Room air technology product line including air-water systems, air diffusers and air distribution solutions for climate control in commercial and residential buildings.
• LTG Prozesslufttechnik (Process Air Technology) Process air technology product line including fans, filter and humidification systems, and airstream simulators for industrial applications across automotive, printing, textile and other process industries.
• Fahrtwind-Simulatoren (Airstream Simulators) Wind/airstream simulators for vehicle testing applications including WLTP, RDE, CFR §1066 and WMTC compliance tests, based on LTG's axial, radial or cross-flow fan technology.
• Windkanal Fahrtwind-Simulatoren VAF Wind tunnel airstream simulator for automotive industry testing, test laboratories and certification organizations such as TÜV, achieving efficiency up to 89% with low noise levels.
• SC03-Fahrzeugtest Fahrtwind-Simulatoren VRSF/VAF Airstream simulator for SC03 vehicle testing up to 60 mph (96 km/h) per CFR §1066, featuring homogeneous air distribution over 1.7 m² blowout area and operating temperatures down to -40°C.
• LTG Ventilatoren (Fans) Complete fan product range including cross-flow, axial and radial fans for all flow types and applications, with compact design, robust construction, high temperature and media resistance, and energy efficiency compliant with ErP directive.
• Filter- und Befeuchtungstechnik (Filter and Humidification Technology) Modular self-cleaning filtration and humidification systems for separating solids, particles, dusts, fibers and chips from industrial process air, and for maintaining constant humidity in industrial processes.
• Wascher DK (Air Washer DK) Air washer for humidification and adiabatic cooling of air with water, featuring integrated filter box, robust glass-fiber reinforced plastic housing, and multiple available sizes for various air volumes.
• CompactDrum Filter CDF Compact drum filter for continuous self-cleaning filtration of industrial process air.
• Axialventilatoren (Axial Fans) Axial fan series including VAN, VAR and VAH models for various industrial ventilation and process air applications.
• Radialventilatoren (Radial Fans) Radial fans including high-pressure VSR, medium-pressure VSR M and VRS, and low-pressure VRK models, plus conveying and exhaust fans for industrial applications.

Quantifiable outcome

• Fan efficiency up to 89%
• +1 more outcomes

Named customers3 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

Feature4 records

Partnerships

Two partnerships are on record, tiered core and minor.

• König & Bauer (KBA)coreStrategic or Co-development PartnerTraining partnership for apprenticeship programs. Through cooperation with KBA, LTG offers broader training insights to apprentices, utilizing synergies for optimal training. Apprentices in the first two years of construction mechanic training are trained in Stuttgart at KBA's learning workshop, then complete the third year at LTG's Weil der Stadt facility.
• Ventilatortausch macht's effizient InitiativeminorOthersLTG is a co-founder of the 'Fan Replacement Makes It Efficient' initiative, promoting energy-efficient fan technology and best practices in ventilation systems.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Greenheck Group: US-based manufacturer of commercial and industrial ventilation equipment including fans, dampers, louvers, and air handling solutions. Comparable to LTG in fan/HVAC equipment manufacturing with similar vertical segmentation strategy.
• Systemair: Swedish manufacturer and distributor of ventilation products including fans, air handling units, and HVAC components with operations across Europe, North America, and Asia. Comparable to LTG in commercial/industrial ventilation equipment manufacturing with broader geographic reach.
• Soler & Palau (S&P): Spanish manufacturer of industrial and commercial ventilation fans, blowers, and air movement equipment with global distribution. Comparable to LTG in fan manufacturing focus with broader residential/commercial market coverage.
• Ziehl-Abegg: German manufacturer of high-efficiency fans, blowers, and motors for HVAC, industrial process air, and ventilation applications. Directly comparable as a German Mittelstand fan specialist with overlapping product lines in axial/radial fans and a focus on energy efficiency similar to LTG.
• ebm-papst: German-based global market leader in fans and motors with a strong focus on energy-efficient EC technology for HVAC, industrial, and automotive applications. Closely comparable to LTG in fan technology focus and German engineering heritage, though larger in scale.
• TLT-Turbo: German manufacturer of industrial fans and ventilation systems for power plants, cement, mining, and process industries. Comparable to LTG as a German industrial fan specialist with similar engineering heritage and customer base.
• FläktGroup: European HVAC and air technology specialist offering fans, air handling units, and ventilation solutions for commercial and industrial buildings. Directly comparable to LTG's Raumlufttechnik division and process air portfolio.
• Nicotra Gebhardt: Manufacturer of industrial fans, blowers, and air handling units serving HVAC and process industries globally. Directly comparable as a focused fan/blower manufacturer targeting similar industrial customers and applications as LTG.

Broad incumbents

• Howden Group: Global leader in air and gas handling solutions including industrial fans, compressors, and turbo equipment for power generation, mining, and process industries. Comparable to LTG in industrial fan manufacturing but significantly larger and broader in scope.

Emerging players

• AVL List: Austrian specialist in powertrain and vehicle testing systems including wind tunnels and emissions test cells for automotive OEMs. Comparable to LTG specifically in automotive airstream simulator and testing equipment segment.

Market position

Strengths1 record

Weaknesses1 record

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

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Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries1 record

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 LTG