Keller Lufttechnik GmbH + Co. KG

Keller Lufttechnik develops and manufactures extraction systems and filtration technology for industrial air pollution control. Our mission: “Setting the benchmark for clean air” – with a strong focus on innovation, sustainability, and occupational safety. As a specialized provider of process-integrated air technology systems, we combine engineering expertise with application-specific filtration technology to deliver reliable solutions for demanding industrial environments.

About us

Keller Lufttechnik is a family-owned company (founded in 1903) headquartered in Kirchheim unter Teck (Baden-Württemberg, Germany). We support industrial companies in reliably capturing and separating airborne contaminants directly at the source – ensuring clean production air, protected machinery, and a healthy working environment. Keller Lufttechnik GmbH + Co. KG stands for individually engineered air pollution control systems and is not a supplier of standardized residential or general HVAC solutions.

During industrial processing operations, pollutants such as dust, chips, welding fumes, paint overspray, oil and emulsion mist, vapors, and other process emissions are generated. Our systems are designed to safely extract and filter these substances, tailored to the specific application, materials, particle characteristics, and thermal and chemical conditions.

Products & Solutions

• Extraction systems and dust collection systems for industrial processes
• Filtration and separation technologies (dry collectors, cartridge filters, bag filters, wet scrubbers – depending on application)
• Solutions for capturing dust, chips, welding fumes, paint overspray, oil mist, emulsion mist, vapors
• Ambient air and hall ventilation systems to improve air quality in production areas
• Engineering & project planning: system design, airflow management, integration into production lines, commissioning
• Explosion protection: system design in accordance with ATEX requirements (e.g. pressure relief, structural protection)
• Service & after-sales: maintenance, inspection, spare parts, retrofit, and system optimization

A key focus is on process-oriented system design: capture elements, air volumes, filtration stages, and energy consumption are systematically aligned to achieve maximum separation efficiency with high economic performance.

Typical Industries & Applications

• Metalworking and welding (welding fumes, grinding dust)
• Machining / CNC processing (oil and emulsion mist, aerosols)
• Surface treatment (e.g. paint overspray, particles)
• Wood and plastics processing (fine dust, chips)
• Mechanical and plant engineering as well as general industrial manufacturing
• Automotive and supplier industry (series production environments)

Customer Benefits

• Occupational safety & health: significantly reduced exposure to pollutants
• Process quality: stable production conditions and lower reject rates
• Protection of buildings & machinery: minimized deposits and corrosion
• Energy & resource efficiency: optimized airflow and recirculation concepts
• Customized solutions: precisely adapted to process, layout, and regulatory requirements

Why Keller Lufttechnik

• More than 120 years of experience in air technology and industrial air pollution control
• Specialization in customized, process-integrated systems instead of standard products
• Technically sound system design based on real production conditions
• Compliance with standards, safety requirements, and sustainability goals
• Reliable partner throughout the entire lifecycle of the system – from planning to optimization

Keller Lufttechnik is clearly positioned as an engineering-driven system provider for industrial air pollution control, offering deep application expertise and internationally deployable solutions.

MASTER DATA

• Business Areas: Plant engineering, mechanical engineering
• Managing Directors: Frank Keller, Ann-Cathrin Keller
• Number of Employees (Germany): 350
• Subsidiaries: USA, China, Switzerland + representatives in 17 countries worldwide
• Year of Foundation: 1903 by Albert Keller in Stuttgart-Uhlbach

Commercial Register Entry:

Keller Lufttechnik GmbH + Co. KG

HRA 230710 Stuttgart Local Court

Industry code: 29230

VAT ID: DE 145 913 063

D-U-N-S No.: 31-614-5945

Quality Certifications

• ISO 9001:2015
• Certified welders according to DIN EN ISO 9606-1
• Environmental Certifications
• ISO 14001:2015 and ISO 50001:2018

Additional Qualifications

• Welding specialist according to DVS guideline 1171
• Certified welding company with quality seal (GSI SLV) according to DIN EN ISO 3834-2:2021, EXC2
• Specialist company according to § 19 I WHG

Memberships

VDI, VDMA, bdguss, Südwestmetall, LVI, IHK, BDS, BME, DIN, DVS, GARP, GTS, Hochschulbund Nürtingen, IND EX, KKE-BW, MANUFUTURE-BW, Personalleiterkreis, AFBW, LBZ-BW, UKOM-BW

Keywords

Industrial air pollution control; extraction systems; dust collection systems; filtration technology; dust removal; welding fume extraction; oil mist separators; emulsion mist separators; paint mist extraction; process air systems; industrial air cleaners; hall ventilation production; occupational air safety; emission reduction; system service; filter system maintenance; spare parts filtration technology; mechanical and plant engineering air technology.