Aerzen

What Aerzen does

Aerzener Maschinenfabrik GmbH (AERZEN) is a privately held German industrial machinery manufacturer founded in 1864 and headquartered in Aerzen, Lower Saxony. The company specializes in the compression of gases and vacuum generation, producing four core hardware families: rotary lobe blowers (Drehkolbengebläse), screw compressors (Schraubenverdichter, both oil-free and oil-injected), rotary piston compressors/screw blowers (Drehkolbenverdichter), and turbo blowers (Turbogebläse), manufactured primarily in Germany and South Korea. These machines are sold into municipal and industrial water and wastewater treatment, pneumatic conveying, compressed air supply, process gas and refrigeration, biogas/biomethane, food and beverage, cement, chemical processing, maritime, vacuum, and mining applications.

AERZEN monetizes primarily through one-time capital equipment sales with quote-based pricing, complemented by a growing aftermarket ecosystem: AERZEN-branded original parts, oils, and service kits; long-tail service contracts, commissioning, inspections, and repairs; a rental solutions business via AERZEN INTERNATIONAL RENTAL B.V. offering pay-per-use and emergency capacity; and analysis/consulting services (acoustic investigations, machine diagnostics, training). A proprietary control technology stack, AERtronic, AERsmart, AERtronic Master, AERZEN WebView, and the AERprogress cloud platform, layers digital monitoring, cluster optimization, and data-based analytics on top of the installed base, beginning to extend the business model toward recurring software-style revenue.

The company distributes through more than 50 wholly-owned subsidiaries and additional channel partners across 100+ countries, supported by direct enterprise field sales, trade fair participation, and a customer portal. Its wholly-owned acquired brands, including RUDOLF MESSNER UMWELTTECHNIK (environmental technology), Suprafilt (filtration), and Specialty Treatment Solutions/Aquarius Technologies (water treatment), point to selective vertical and geographic tuck-in M&A alongside organic expansion. The business carries the profile of a long-established, founder-controlled mid-market industrial company with global reach but no public financial disclosure.

Name

Aerzen

Legal name

Aerzener Maschinenfabrik GmbH

Website

https://aerzen.ch

Company type

Private

Founded year

1864

Operating status

Operating

Headcount range

1–10 employees

Short description

Aerzener Maschinenfabrik GmbH (AERZEN) is a privately held German industrial OEM founded in 1864 that designs, manufactures, and services rotary lobe blowers, screw compressors, rotary piston compressors, and turbo blowers for industrial gas compression across 100+ countries.

Ownership category

akta.pro rank

Product category

Industrial Air & Gas Compressors and Blowers

NAICS

Air and Gas Compressor Manufacturing (333912), Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Pump and Compressor Manufacturing (33391), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334)

SIC

Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Refrigeration & Service Industry Machinery (3580), General Industrial Machinery & Equipment (3560)

akta.pro primary industry

Air & Gas Compressors (General Purpose) (IMAHANAE)

akta.pro secondary industries

Process Gas & High-Pressure Compressors (IMAHANAF), Pump & Compressor Packages (Skids, Booster Sets) (IMAHANAG), Refrigeration Compressor Oils (IMAEAMAH), Fans, Blowers & Ventilation Units (Supply/Exhaust/Inline) (IMADANAB)

Keywords

• Industrial compressors
• Rotary lobe blowers
• Turbo blowers
• Gas compression machinery
• Process gas equipment

Headquarters

HQ city

Frauenfeld

HQ country

Switzerland

HQ region

Europe

Offices44 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Industrial Compressor and Blower Sales: Sale of high-performance machines including rotary lobe blowers, screw compressors, rotary piston compressors, and turbo blowers. Products are customized solutions for specific industrial processes with long lifecycle equipment.
2. Rental Solutions: AERZEN Rental Solutions provides temporary equipment rental for compressed air, gas, and vacuum applications. Offers pay-per-use pricing models for event contingencies and emergency support.
3. Service and Maintenance: Comprehensive service offerings including commissioning, inspections, maintenance, repairs, and service contracts. Original AERZEN parts, service kits, and oils for ongoing maintenance.
4. Original Parts and Consumables: Sale of original AERZEN spare parts, service kits, replacement stages, relubrication equipment, and AERZEN oil products for maintenance and repairs.
5. Analysis and Consulting Services: Acoustic investigations, machine diagnostics, training programs, and machine registration services for process optimization.

Go-to-market motion3 records

Distribution channels4 records

Marketing channels5 records

Core offering

AERZEN designs, manufactures, and services industrial blowers and compressors for air, process gas, biogas, and vacuum applications. The core product families are rotary lobe blowers, screw compressors (oil-free and oil-injected), rotary piston compressors, and turbo blowers, complemented by proprietary digital control systems (AERtronic, AERsmart, AERprogress, WebView) and supported by rental solutions, original spare parts, and maintenance services.

Product overview

AERZEN (Aerzener Maschinenfabrik GmbH) is an industrial machinery manufacturer specializing in gas compression solutions since 1864. The company offers a comprehensive portfolio of four core product lines: rotary lobe blowers (Drehkolbengebläse), screw compressors (Schraubenverdichter), rotary piston/screw blowers (Drehkolbenverdichter), and turbo blowers (Turbogebläse). These are complemented by an advanced control technology ecosystem including AERtronic (unit control), AERsmart (cluster control), AERtronic Master (superordinate control), WebView (process monitoring), and AERprogress (cloud-based data solutions). The product portfolio serves diverse industrial applications including water/wastewater treatment, pneumatic conveying, process gas and refrigeration, food industry, cement/lime, chemical/processing, compressed air, maritime, biogas/biomethane, vacuum technology, and mining. AERZEN operates through over 50 subsidiaries across more than 100 countries with approximately 2,500 employees.

Differentiator

Problem solved

Functional benefit

Brands

• AERtronic: Control system for blower units
• AERsmart
• AERprogress
• AERZEN WebView

Products and services

• Rotary Lobe Blowers (Drehkolbengebläse) Robust continuous-duty rotary lobe blowers designed for air and neutral gas applications, vacuum applications, biogas applications, and process gas applications, serving industrial facilities across multiple sectors.
• Screw Compressors (Schraubenverdichter / Schraubenkompressoren) Oil-free and oil-injected screw compressors continuously optimized since 1943, including Serie SI (oil-injected with PM motor up to 13 bar) and Serie DS (2-stage oil-free up to 10.5 bar) for industrial compressed air and process gas applications.
• Rotary Piston Compressors / Screw Blowers (Drehkolbenverdichter / Schraubengebläse) Hybrid machines combining the advantages of blower and compressor technology in one unit, offering combined functionality for various industrial applications.
• Turbo Blowers (Turbogebläse) Oil-free turbo blowers known for high energy efficiency and advanced technology, serving industrial aeration and gas handling applications.
• Rental Solutions Rental machines and solutions for temporary capacity needs, emergency support, contingency planning, and pay-per-use options for compressed air, gas, and vacuum applications.
• Service and Maintenance (Kundendienst) Comprehensive service offerings including commissioning, inspections, maintenance, repairs, and service contracts for AERZEN blower and compressor equipment.
• Original AERZEN Parts and Consumables Sale of original AERZEN spare parts, service kits, replacement stages, relubrication equipment, and AERZEN oil products for maintenance and repair of AERZEN equipment.
• Analysis and Consulting Services Acoustic investigations, machine diagnostics, training programs, and machine registration services for process optimization of AERZEN equipment.

Quantifiable outcome

• Energy efficiency improvements through intelligent combination control with AERsmart
• +2 more outcomes

Segments11 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

One partnership is on record.

• DEWA Projekt OÜminorOthersLocal partner in Estonia providing AERZEN product representation and support in the Estonian market

Scale indicators4 records

Recent moves2 records

Expansion highlights6 records

Market position

Strengths1 record

Competitive moat5 records

Key risks1 record

Key highlights7 records

Customer concentration

• Xx.com/aerzenmachines
• LinkedInlinkedin.com/company/aerzen-schweiz-ag-

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries55 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 Aerzen