Airflow

What Airflow does

Airflow Lufttechnik GmbH is a German manufacturer of ventilation systems and precision measurement devices, founded in 1965 and headquartered in Rheinbach, North Rhine-Westphalia. The company specializes in ventilation equipment with high-efficiency heat recovery for non-residential buildings, educational institutions, and multi-story residential construction, with airflow volumes spanning 100 to 150,000 m³/h across its portfolio.

The product portfolio centers on the DUPLEX family — including DUPLEXbase, DUPLEX Multi Eco, DUPLEX Multi Eco-N, DUPLEX Roto, DUPLEXhome, DUPLEX Vent, DUPLEX Vent X (a 3-in-1 ventilation/heating/cooling unit with integrated heat pump), DUPLEX Vent Easy plug-and-play units, and the DUPLEXmodular configurable platform launched in 2026. Adjacent lines include iCON small-room fans, SMART Box and EASY Box transfer modules, the RD-6 digital control system with cloud connectivity and a mobile app, and a measurement-instruments range covering pressure, flow, climate, indoor air quality, environmental, and noise — including the OmniWear Noise dosimeter introduced in 2025. A proprietary iris-closure patent protects iCON small-room fans, and the company holds ISO 9001:2015 certification.

Airflow operates a direct field-sales model through 14 regional sales representatives covering German postal code territories, supported by an inside-sales team and a network of authorized regional service partners for installation and maintenance. Revenue is generated through quote-based hardware sales, a manufacturer-independent calibration laboratory for measurement instruments, commissioning services, and digital system monitoring via the Airflow Service Cloud. The customer base spans municipal governments, non-profit housing providers, cooperatives, commercial real estate developers, schools, and entertainment venues, with no disclosed recurring SaaS revenue or geographic presence outside Germany.

Name

Airflow

Legal name

Airflow Lufttechnik GmbH

Website

https://airflow.de

Company type

Private

Founded year

1965

Operating status

Operating

Headcount range

51–100 employees

Short description

Airflow Lufttechnik GmbH is a German manufacturer, founded in 1965 and based in Rheinbach, producing high-efficiency heat-recovery ventilation systems and precision measurement devices for non-residential buildings, educational facilities, and multi-story residential projects across Germany.

Ownership category

akta.pro rank

Product category

HVAC Ventilation Equipment

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564), Auto Controls For Regulating Residential & Comml Environments (3822)

akta.pro primary industry

Ventilation, Ducting & Air Distribution Equipment (IMAHAKAG)

akta.pro secondary industries

Fans, Blowers & Ventilation Units (Supply/Exhaust/Inline) (IMADANAB), HVAC Zoning, Smart Dampers & Ventilation Control (HSAOANAB), Dampers, Louvers & Ventilation Controls (IMADANAD)

Keywords

• Ventilation systems manufacturing
• HVAC heat recovery units
• Decentralized ventilation equipment
• Building measurement instruments
• Controlled residential ventilation

Headquarters

HQ city

Rheinbach

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Ventilation Equipment Sales: Sale of central and decentralised ventilation units including DUPLEXmodular, DUPLEX Multi Eco, DUPLEX Vent series, and DUPLEXhome products. Products range from compact plug-and-play units to custom modular systems for large-scale projects.
2. Measurement Instruments: Precision measurement technology including pressure transmitters, flow meters, CO2 sensors, and environmental measurement devices for quality assurance and system optimization.
3. Service and Calibration: Commissioning services, digital system monitoring, and in-house calibration laboratory for measurement equipment. Manufacturer-independent calibration service for measurement technology.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Airflow Lufttechnik GmbH manufactures and sells ventilation equipment with high-efficiency heat recovery for non-residential buildings, educational institutions and multi-story residential construction (central compact units, modular systems and decentralized units covering 100 to 150,000 m³/h), complemented by small-room fans, air distribution modules and the RD6 digital control platform. The company also produces precision measurement instruments (pressure, flow, CO2, climate, environmental, sound) and operates a manufacturer-independent calibration laboratory, digital system-monitoring service and a nationwide field sales and service-partner network across Germany.

Product overview

Airflow Lufttechnik GmbH is a German manufacturer specializing in ventilation and measurement technology with over 55 years of experience. The product portfolio consists of three main pillars: (1) DUPLEX-series ventilation units — comprising central compact units (DUPLEXbase, DUPLEX Multi Eco, DUPLEX Multi Eco-N, DUPLEX Roto, DUPLEXhome), modular systems (DUPLEXmodular), and decentralized units (DUPLEX Vent, DUPLEX Vent X, DUPLEX Vent Easy) — forming the core of the offering; (2) iCON small-room fans (iCON/iCONstant and iCON SELV 12 VDC) for bathrooms and wet rooms; (3) measurement instruments (pressure transmitters including the PT-SXR 2, flow, climate, environmental, and noise measurement devices including OmniWear Noise™); and (4) supplementary products including SMART Box and EASY Box air distribution modules, the RD6 digital control system with mobile app, and services such as commissioning, digital system monitoring, and manufacturer-independent calibration laboratory. All products are supported by a nationwide sales network and service partners.

Differentiator

Problem solved

Functional benefit

Brands

• DUPLEX: Central and modular ventilation units with heat recovery for various building types and applications.
• iCON
• SMART Box
• PT-SXR 2
• RD6

Products and services

• DUPLEXbase Series (Zentrale Lüftung — Compact Central Ventilation Units) Versatile compact central ventilation unit for indoor and outdoor installation with plug-and-play design, available immediately from stock with volume flows from 100 to 6,000 m³/h. Targets non-residential buildings and commercial ventilation projects.
• DUPLEX Multi Eco Series (Central Ventilation Units with Counterflow Heat Recovery) Individually manufactured compact central ventilation units with extensive variant diversity, indoor and outdoor versions, intelligent control including app integration, volume flows 100 to 10,870 m³/h with counterflow heat recovery up to 93%. Targets commercial and residential projects.
• DUPLEX Roto Series (Rotary Heat Exchanger Ventilation Units) Central ventilation units with aluminum rotary heat exchanger delivering heat recovery up to 90%, available for indoor and outdoor installation with volume flows from 100 to 15,000 m³/h. Targets commercial buildings.
• DUPLEXhome Series (Controlled Residential Ventilation with Heat Recovery) Compact controlled residential ventilation with heat recovery up to 95%, energy efficiency class A+, volume flow up to 553 m³/h. Targets multi-story residential buildings and social-housing projects.
• DUPLEXmodular (Modular Ventilation System for Complex Applications) Modular ventilation system for complex applications; all common air treatment functions in one system; HVAC design software with over 100,000 configurable components and volume flows from 1,000 to 150,000 m³/h. Targets complex large-scale projects.
• DUPLEX Vent Series (Decentralized Ventilation Units) Decentralized ventilation units available as standing models or hanging wall/ceiling models with whisper-quiet operation at only 35 dB(A) and volume flow from 100 to 1,300 m³/h. Targets schools, kindergartens and offices.
• DUPLEX Vent X (3-in-1 Decentralized Ventilation, Heating and Cooling Unit) Decentralized ventilation unit combining ventilation, heating and cooling in a single device with integrated reversible air-to-air heat pump, volume flow up to 334 m³/h at 35 dB(A). Targets schools and modular buildings.
• DUPLEX Vent Easy (Plug-and-Play Decentralized Ventilation from Stock) Standard decentralized ventilation units with included CO2 sensor, plug-and-play design, immediately available from stock, volume flow up to 900 m³/h at 35 dB(A), with EN54-27 smoke detector. Targets schools, kindergartens and offices.
• iCON / iCONstant (Small-Room Ventilation Fans for Wet Rooms) Small-room ventilation fans for showers, bathrooms and toilets. Available as demand-controlled ventilation (iCON) or permanent ventilation with basic and power modes (iCONstant), installed in wall or ceiling. Targets residential and small commercial wet rooms.
• iCON SELV 12 VDC (Low-Voltage Small-Room Ventilation Fans) 12 V low-voltage ventilation fans for installation in wet rooms, with brushless DC motors for energy savings; iCON 15 SELV (up to 77 m³/h) and iCON 30 SELV (up to 132 m³/h); under-cabinet and surface mounting options.
• SMART Box Series (Intelligent Transfer Modules for Multi-Story Buildings) Intelligent transfer modules for independent supply/exhaust air control in multi-story residential buildings; individual regulation with mobile device via web or cloud server; precise consumption measurement and per-apartment billing. Sizes 125/160/200/250/400 covering 20–2,600 m³/h.
• EASY Box Series (Comfortable Volume-Flow Controllers for Central Ventilation Systems) Comfortable volume-flow controllers for central ventilation systems with simple operation and volume flows from 125 to 5,500 m³/h. Targets residential and commercial air distribution.
• Messgeräte (Measurement Instruments Portfolio) Comprehensive portfolio of precision measurement technology for quality assurance and system optimization in HVAC applications, covering flow, pressure, CO2, climate, environmental and sound/noise measurement devices. Targets HVAC commissioning engineers and quality assurance buyers.
• Druckmessumformer PT-SXR 2 (Differential Pressure Transmitter) Microprocessor-controlled differential pressure transmitter with temperature and pressure compensation for precision volume-flow measurement in industrial and cleanroom applications; scalable measurement range, automatic zero-point calibration, USB-C interface. Targets industrial QA and cleanroom operators.
• Luftprobenahmepumpen (Air Sampling Pumps) Air sampling pumps for precise detection of pollutant loads and sustainable safety design of work environments; part of Airflow's environmental measurement device portfolio. Targets occupational health & safety and environmental monitoring buyers.
• OmniWear Noise™ (Personal Wearable Noise Dosimeter) Portable personal noise dosimeter for occupational noise exposure measurement. Compact, intuitive, and networked. Targets workplace safety officers and occupational health buyers.
• RD6 Digital Control System (Digitales Regelungssystem) Digital control system for central DUPLEX ventilation units. Modular hardware concept with flexible software logic; integrated web server, Modbus, optional BACnet/KNX, remote diagnostics via Airflow Service Cloud, and programmable user profiles. Targets operators of central DUPLEX ventilation equipment.
• Kalibrierlabor (Calibration Laboratory Service) Manufacturer-independent calibration service for measurement instruments, including calibration, maintenance and rental services, performed at Airflow's in-house Kalibrierlabor. Targets industrial QA labs and HVAC commissioning engineers.

Quantifiable outcome

• Heat recovery efficiency up to 95% for residential (DUPLEXhome) and 93% for commercial (DUPLEX Multi Eco-N)
• +4 more outcomes

Named customers7 records

Segments4 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature7 records

Partnerships

Five partnerships are on record, tiered regional.

• Löschner GmbH LüftungstechnikregionalImplementation/ SI/ Consulting PartnerAuthorised service partner for Hamburg and Schleswig-Holstein region, providing installation, commissioning and maintenance services for Airflow ventilation equipment.
• SKG Gebäudetechnik GmbHregionalImplementation/ SI/ Consulting PartnerAuthorised service partner for Bremen and Lower Saxony region, providing installation and maintenance services for Airflow ventilation systems.
• HLK-ElektrotechnikregionalImplementation/ SI/ Consulting PartnerAuthorised service partner for Baden-Württemberg region.
• Benkelmann Kälte – Klima – LuftregionalImplementation/ SI/ Consulting PartnerAuthorised service partner for Baden-Württemberg (Westhausen location).
• Schmidbaur Elektroservice GmbHregionalImplementation/ SI/ Consulting PartnerAuthorised service partner for Bavaria region.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Systemair AB: Listed Swedish manufacturer of ventilation, air-handling, and heating products with a pan-European and global footprint. Directly comparable to Airflow as a competing supplier of central and decentralised heat-recovery ventilation units to commercial, educational, and residential customers, but operating at materially larger scale.
• Swegon Group AB: European indoor-climate specialist offering energy-efficient ventilation, heating/cooling, and acoustic solutions for commercial buildings. Comparable to Airflow's DUPLEX Multi Eco and DUPLEXmodular lines for non-residential IAQ and heat-recovery applications, though broader and larger.
• Zehnder Group AG: Swiss indoor-climate group with a strong German residential ventilation business alongside radiators. Comparable on DUPLEXhome-style residential heat-recovery units and increasingly on commercial indoor-air-quality solutions, but a larger, more diversified incumbent.
• Lindab AB: Swedish-listed supplier of ventilation ductwork, fans, and air-handling components for commercial buildings. Overlaps with Airflow on ducted ventilation distribution and air-handling unit segments, especially for multi-story residential and commercial projects.
• Vaillant Group: German heating, ventilation, and heat-pump manufacturer serving residential and light-commercial markets. Adjacent competitor on integrated heat-pump-plus-ventilation propositions and a key reference point for the German HVAC regulatory and product landscape.
• Dantherm Group A/S: Danish manufacturer of mobile and fixed heating, cooling, dehumidification, and ventilation solutions. Comparable on decentralised and semi-mobile ventilation/air-quality equipment for commercial and institutional customers, though stronger in mobile/temporary deployment than Airflow.

Direct peers

• Pluggit GmbH: German manufacturer of decentralised and central residential/commercial ventilation units with heat recovery, headquartered in Munich. Closest direct peer to Airflow's DUPLEXhome and DUPLEX Vent ranges, competing in the same German mid-market for residential and small-commercial projects.
• Helios Ventilatoren GmbH + Co. KG: German family-owned ventilation manufacturer offering small-room fans, decentralised units, and central heat-recovery systems. Directly comparable to Airflow on iCON small-room fans and decentralised DUPLEX Vent products for the German market.
• Testo SE & Co. KGaA: German measurement-instrument specialist (flow, pressure, IAQ, emissions). Directly comparable to Airflow's measurement-instruments portfolio (PT-SXR 2, flow meters, CO2 sensors, environmental devices, OmniWear Noise) and a strong reference point for in-house calibration services.

Regional players

• Stiebel Eltron GmbH & Co. KG: German heat-pump and hot-water specialist with growing integrated HVAC offerings. Comparable on the heating/cooling side of the DUPLEX Vent X 3-in-1 proposition (heat pump + ventilation), though Stiebel's core is heat generation rather than ventilation manufacturing.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/airflow-lufttechnik-gmbh

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 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 Airflow