Aerotechnology Siegwart

What Aerotechnology Siegwart does

Aerotechnik E. Siegwart GmbH, operating as Aerotechnik Siegwart, is a German manufacturer of components for ventilation and air conditioning systems, headquartered in Friedrichsthal, Saarland. Founded in 1975 by Emil Siegwart, the company has spent five decades building a specialty product portfolio that includes shut-off and throttle valves (Absperrklappen, Drosselklappen, Bypassklappen), duct fittings (Formstücke) such as elbows, reducers, T-pieces, flanges, and connectors, louver and smoke protection dampers (Jalousieklappen, Rauchschutzklappen), spiral-wound, flexible, and smooth pipes (Wickelfalzrohre, Flexible Rohre, Glattrohre), a family of mechanical and electronic/pneumatic volume flow controllers (Volumenstromregler) in round and rectangular configurations, weather protection grilles (Wetterschutzgitter), silencers (Schalldämpfer), installation accessories (Zubehör), and the proprietary Lipstar double-lip rubber sealing system (Lipstar Dichtungssystem) for leak-proof duct connections.

The company's underlying technology centers on precision sheet-metal forming for HVAC ductwork and traditional mechanical/electro-pneumatic airflow control, with its only clearly proprietary element being the branded Lipstar sealing system. It operates a sales-led go-to-market targeting four horizontal B2B segments — Anlagenbauer (plant engineers), Gerätehersteller (equipment manufacturers), Fachgroßhandel (specialized wholesale distributors), and Planungsbüros (planning offices) — and serves them through direct sales and regional channel partners. The company is family-controlled, structured as a German GmbH (HRB Nr. 498 at Amtsgericht Saarbrücken), with current Managing Directors Wolfgang Siegwart and Andreas Schiekofer, and maintains industry presence through membership in Fachverband Gebäude-Klima e.V. and Herstellerverband für Luftleitungen e.V. It also offers a customer login portal and downloadable technical design documentation, and operates a trilingual (German, English, French) website reflecting its footprint in Germany and other European markets including France.

Name

Aerotechnology Siegwart

Legal name

Aerotechnik E. Siegwart GmbH

Website

https://aerotechnik.de

Company type

Private

Founded year

1975

Operating status

Operating

Headcount range

51–100 employees

Short description

Aerotechnik Siegwart is a German manufacturer, founded in 1975 and headquartered in Friedrichsthal, Saarland, producing ventilation and air conditioning components — damper valves, duct fittings, volume flow controllers, pipes, silencers, and the proprietary Lipstar sealing system — sold to plant engineers, equipment manufacturers, wholesale distributors, and planning offices.

Ownership category

akta.pro rank

Product category

HVAC Components

NAICS

Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564), Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050)

akta.pro primary industry

Dampers, Louvers & Ventilation Controls (IMADANAD)

akta.pro secondary industries

Ventilation & Smoke Control Systems (Smoke Exhaust/Pressurization) (IMADANAI), Ventilation, Ducting & Air Distribution Equipment (IMAHAKAG)

Keywords

• HVAC components
• Ventilation ductwork
• Volume flow controllers
• Smoke protection dampers
• Air handling systems

Headquarters

HQ city

Friedrichsthal

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. HVAC Components Sales: Aerotechnik Siegwart generates revenue through the manufacture and sale of standardized and custom ventilation components including damper valves, pipe fittings, volume flow controllers, and weather protection products. The company serves plant engineers, equipment manufacturers, specialized wholesale distributors, and planning offices with both standard products and customer-specific solutions from inquiry through to delivery.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Aerotechnik Siegwart manufactures standardized and customer-specific components for ventilation and air conditioning systems, including shut-off and throttle valves, duct fittings, louver and smoke protection dampers, spiral-wound and flexible pipes, volume flow controllers, weather protection grilles, silencers, and the proprietary Lipstar double-lip rubber sealing system. Products are delivered to plant engineers, equipment manufacturers, specialized HVAC wholesalers, and engineering planning offices from inquiry through to on-time delivery.

Product overview

Aerotechnik Siegwart is a manufacturer of components for ventilation and air conditioning systems based in Friedrichsthal, Germany. The company's product portfolio is organized into core product categories: (1) Absperrklappen und Drosselklappen (shut-off and throttle valves including combined variants and bypass valves) for air flow control; (2) Formstücke (duct fittings) including elbows, reducers, T-pieces, crosses, flanges, connectors, and specialty pieces for building complete duct systems; (3) Jalousieklappen und Rauchschutzklappen (louver valves and smoke protection valves) in standard and air-tight variants for air regulation and fire safety; (4) Rohre (pipes) encompassing Wickelfalzrohre (spiral wound ducts), flexible pipes, and smooth pipes; (5) Volumenstromregler (volume flow controllers) available in mechanical (constant self-regulating) and electronic/pneumatic (variable) models in both round and rectangular configurations, along with measurement nozzles and boxes; (6) Wetterschutzgitter (weather protection grilles) in square and round forms; (7) Schalldämpfer (sound absorbers/silencers) for noise reduction; (8) Lipstar Dichtungssystem, a proprietary roll rubber sealing system for leak-proof duct connections; and (9) Zubehör (accessories) such as pipe clamps and sealing materials. The company also offers painted components and provides technical design software and catalogs for engineering calculations. All products serve HVAC applications in ventilation and air conditioning plants, technical buildings, and industrial applications.

Differentiator

Problem solved

Functional benefit

Brands

• Lipstar Dichtungssystem: A double-lip rubber sealing system for duct connections, representing the company's proprietary sealing technology.

Products and services

• Absperrklappen und Drosselklappen (Shut-off and Throttle Valves) Shut-off valves and throttle valves (including combined and bypass variants) for controlling airflow in ventilation and air conditioning systems, sold to plant engineers, equipment manufacturers, and HVAC installers.
• Formstücke (Duct Fittings) Duct fittings and formed pieces including elbows, reducers, T-pieces, crosses, flanges, connectors, end caps, roof hoods, and other specialty pieces for assembling complete air duct systems in HVAC installations.
• Jalousieklappen und Rauchschutzklappen (Louver Dampers and Smoke Protection Dampers) Louver valves (standard and air-tight variants) for air regulation and smoke protection valves designed to prevent smoke spread during fire emergencies in ventilation systems, supplied for building services and fire safety applications.
• Rohre (Pipes) Pipes and tubing for air distribution including spiral wound ducts (Wickelfalzrohre), flexible pipes (Flexible Rohre), and smooth pipes (Glattrohre) for HVAC ducting installations.
• Volumenstromregler (Volume Flow Controllers) Volume flow controllers for constant or variable air volume regulation, available in mechanical (constant self-regulating) and electronic/pneumatic (variable) variants in both round and rectangular configurations, plus measurement nozzles, rods, and boxes, for maintaining precise airflow in HVAC systems.
• Wetterschutzgitter (Weather Protection Grilles) Weather protection grilles in square (eckig) and round (rund) configurations for protecting ventilation openings and outdoor air intakes from weather elements.
• Schalldämpfer (Sound Absorbers / Silencers) Sound absorbers and silencers for reducing noise in ventilation and air conditioning systems, supplied to HVAC installers and plant engineers.
• Zubehör (Accessories) Accessories including pipe clamps (Rohrschellen), sealing tape (Abdichtklebeband), sealing compounds (Abdichtmasse), and Dichtmasse for installation of ventilation ductwork systems.
• Lipstar Dichtungssystem (Lipstar Sealing System) Proprietary double-lip rubber sealing system using roll rubber gasket technology for leak-proof duct connections with easy assembly and disassembly, supplied as the company's signature in-house developed sealing technology for HVAC ductwork.
• Lackierte Formstücke und Rohre (Painted Duct Fittings and Pipes) Painted duct fittings and pipes offered for applications requiring specific surface finishes or color coding, supplied as finished custom-finished components.

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Two partnerships are on record, tiered minor.

• Fachverband Gebäude-Klima e.V.minorOthersAerotechnik Siegwart is a member of the Building Climate Association (Fachverband Gebäude-Klima e.V.), an industry trade organization for building climate and ventilation professionals in Germany.
• Herstellerverband für Luftleitungen e.V.minorOthersAerotechnik Siegwart is a member of the Manufacturers Association for Air Ducts (Herstellerverband für Luftleitungen e.V.), an industry association representing manufacturers of air duct components in Germany.

Scale indicators1 record

Recent moves4 records

Expansion highlights3 records

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/297540440682214

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 Aerotechnology Siegwart