KSI Filtertechnik
KSI Filtertechnik is a family-owned German manufacturer (founded 1996, Willich) of compressed air filtration, drying, and condensate treatment systems, serving food & beverage, medical, and industrial customers via the compressed air trade channel across eight countries with three production sites.
- Company typePrivate
- Founded1996
- HeadquartersWillich, Germany
- Headcount101–250
- GTM typeB2B
- OfferingHardware or Manufacturing
What KSI Filtertechnik does
KSI Filtertechnik GmbH is a privately held, family-owned German industrial machinery manufacturer founded in 1996 and headquartered in Willich, North Rhine-Westphalia. The company designs and manufactures compressed air treatment and condensate management equipment — including pleated filtration elements (ECOCLEAN APF series), adsorption, refrigeration, and membrane dryers (ECOTROC family), activated carbon adsorbers, oil-water separators (KONTREC), condensate drains (KONDRAIN), N2/O2 generators, and medical compressed-air preparation systems — sold primarily through the compressed air specialist trade (Fachhandel) and direct regional subsidiaries.
Its business model is a hybrid of OEM equipment sales and a broad aftermarket: KSI produces 17,462 alternative filter elements compatible with housings from 307 original manufacturers, sold via its B2B webshop (shop.ksi.eu) and through wholly-owned entities in eight countries (Germany, Canada, USA, UK, Czech Republic, Netherlands, Kosovo, India). Manufacturing is split across three facilities — filter elements in Norwich (UK), steel/stainless/aluminum components in Rymarov (Czech Republic), and final assembly in Willich (Germany) — supplying compressed-air trade customers across food & beverage, breathing air / medical, and general industrial verticals under ISO 8573 purity standards.
KSI monetizes primarily through hardware sales of filtration, drying, and condensate management systems, complemented by recurring aftermarket revenue from replacement elements, service kits, and a growing measurement-technology line (TPK dew point monitors, oilguard III, particleguard II, airflow, leakguard). Commercial motion combines direct field sales (Außendienst) and inside sales (Innendienst) with a partner network and direct B2B e-commerce. The company is led by Managing Director Holger Krebs, has no external institutional investors, and has remained family-owned and family-run since founding.
KSI Filtertechnik firmographics
Firmographics- Name
- KSI Filtertechnik
- Legal name
- KSI Filtertechnik GmbH
- Website
- https://ksi.eu
- Company type
- Private
- Founded year
- 1996
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- KSI Filtertechnik is a family-owned German manufacturer (founded 1996, Willich) of compressed air filtration, drying, and condensate treatment systems, serving food & beverage, medical, and industrial customers via the compressed air trade channel across eight countries with three production sites.
- Ownership category
- akta.pro rank
KSI Filtertechnik industry classification
Industry- Product category
- Compressed Air Treatment Equipment
- NAICS
- Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341)
- SIC
- Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)
- akta.pro primary industry
- Air Quality & Filtration Equipment (IAQ) (IMAHAKAI)
- akta.pro secondary industries
- Dust Collection & Air Filtration Equipment (Industrial) (IMAHALAF), Pneumatic Air Preparation & Distribution (FRL assemblies, manifolds, air headers) (IMAHAGAD)
Keywords
Where KSI Filtertechnik is headquartered
LocationHeadquarters
- HQ city
- Willich
- HQ country
- Germany
- HQ region
- Europe
Offices8 records
Markets served
KSI Filtertechnik business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Product Sales (Hardware): Sale of compressed air filtration, drying, and condensate management equipment and components including filters, dryers, separators, controls, and monitoring systems. Also includes alternative/aftermarket filter elements compatible with other manufacturers' housings.
- After-sales Service & Spare Parts: Sales of replacement filter elements, service kits, and after-sales support for the installed base of KSI equipment and third-party compressed air systems.
- Web Shop Sales: Direct B2B sales through the shop.ksi.eu e-commerce platform offering filter elements, oil-water separators, condensate drains, and accessories for trade customers.
Go-to-market motion2 records
Distribution channels3 records
Marketing channels7 records
KSI Filtertechnik product offering
Product offeringCore offering
KSI Filtertechnik manufactures compressed air filtration, drying (adsorption, refrigeration, membrane), and condensate management equipment, plus ISO 8573 measurement and monitoring technology, sold primarily through the compressed air trade (Fachhandel) and direct subsidiaries across Europe, North America, and India. The company also produces aftermarket alternative filter elements compatible with 307 other manufacturers, N2/O2 generators, and complete compressed air treatment system solutions.
Product overview
KSI Filtertechnik is a family-owned company (since 1996) specializing in compressed air and condensate treatment as well as filtration technology. Their product portfolio centers on the ECOTROC® brand of dryers (adsorption dryers ATK/ATKN/ATK-APN/ATO-APN/ATON for dew points to -70°C, refrigeration dryers KT-H, membrane dryers MT-PLUS) and ECOTROC® activated carbon adsorbers (ATC/ATCN/ATC-APN) for oil vapor removal. The KSI ECOCLEAN® APF filter family provides comprehensive filtration including standard, activated carbon, cartridge (CAK/MSK/HC), dust, water separator, and medical sterile filters. The portfolio includes ECOTROC® ATM medical air preparation systems, N2/O2 generators, KONTREC® oil-water separators, KONDRAIN® condensate drains, and measurement technology (TPK dew point monitoring, particleguard II particle monitoring, oilguard III residual oil monitoring, airflow volumetric flow, leakguard leak detection, and ISO 8573 quality analyses). Online monitoring is enabled through KSI ECOCONTROL, while ECOMATIC 4.0 controls optimize system performance. The aftermarket business offers alternative filter elements compatible with competitor housings across three generations (FE/GTE/APE), ECOCOMP® compressor filters, and comprehensive service/aftersales support. Manufacturing is conducted in England, Czech Republic, and Germany, with final assembly in Willich, Germany.
Differentiator
Problem solved
Functional benefit
Products and services
- KSI ECOCLEAN APF Standard Filter Threaded-connection compressed air filter using proprietary high-density deep-bed pleating technology for general industrial compressed air filtration.
- KSI ECOCLEAN APF Activated Carbon Filter
Quantifiable outcome
- 55% less differential pressure compared to conventional filter elements
- +5 more outcomes
Companies that use KSI Filtertechnik
Customer profileNamed customers1 record
Segments3 records
Ideal customer profiles4 records
KSI Filtertechnik technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
KSI Filtertechnik partnerships and signals
Strategic signalScale indicators4 records
Recent moves6 records
Expansion highlights6 records
KSI Filtertechnik competitors and assessment
Company assessmentBroad incumbents
- Donaldson Company: US-headquartered global filtration conglomerate with a large industrial compressed air filtration business (Donaldson Ultrafilter). Competes with KSI across the same product categories but as part of a much broader filtration portfolio spanning many industries.
- Atlas Copco: Global compressor and air treatment leader offering integrated compressed air solutions including filtration, drying, and condensate management. Overlaps with KSI's portfolio but bundles these with the compressor sale as part of a much larger equipment ecosystem.
- SMC Corporation: Japanese pneumatics and air preparation equipment giant offering air filters, dryers, and FRL combinations for factory automation. Competes with KSI's air preparation products but from a global pneumatics incumbent position.
- Parker Hannifin: Global motion and control technologies leader whose Industrial Gas Filtration division (formerly Domnick Hunter/Zander-HIF) directly overlaps with KSI's compressed air filtration and drying portfolio, but as part of a vastly larger diversified industrial business.
- Festo: German-headquartered global pneumatics and automation specialist with overlapping air preparation products (filters, dryers). Comparable in German industrial heritage and trade-partner GTM, but operates as a much broader automation platform.
Direct peers
- Beko Technologies: German-headquartered specialist in compressed air treatment including filtration, drying, and condensate management. Closest direct competitor to KSI on product portfolio (filters, adsorption/refrigeration/membrane dryers, condensate drains) and on geographic focus (DACH region, Fachhandel channel).
- Mikropor: Turkey-based compressed air filtration manufacturer with global distribution. Comparable product portfolio (filters, dryers, condensate management) and similar mid-sized player profile competing on cross-manufacturer aftermarket compatibility.
- Hi-line Industries: UK manufacturer of compressed air filtration, drying, and condensate management equipment serving industrial and breathing-air markets. Closely comparable mid-sized European specialist competing in similar trade channels and verticals.
- Zander Group: German compressed air purification specialist offering filtration, adsorption drying, and activated carbon adsorption products. Direct competitor in the DACH compressed air trade with comparable product portfolio targeting similar food & beverage and industrial customers.
- Walker Filtration: UK-based manufacturer of compressed air filtration and drying equipment with strong presence in industrial and breathing-air applications. Direct comparable on product mix (filters, dryers, condensate management), regulatory verticals, and European manufacturing footprint.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
KSI Filtertechnik social profiles
Digital presenceKSI Filtertechnik financial estimates
Financial estimateRevenue estimate
Valuation estimate
KSI Filtertechnik leadership team
Management profileNumber of profiles
Profiles12 records
KSI Filtertechnik subsidiaries and ownership
Company hierarchySubsidiaries7 records
KSI Filtertechnik funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
KSI Filtertechnik M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about KSI Filtertechnik
What does KSI Filtertechnik do?
KSI Filtertechnik manufactures compressed air filtration, drying (adsorption, refrigeration, membrane), and condensate management equipment, plus ISO 8573 measurement and monitoring technology, sold primarily through the compressed air trade (Fachhandel) and direct subsidiaries across Europe, North America, and India. The company also produces aftermarket alternative filter elements compatible with 307 other manufacturers, N2/O2 generators, and complete compressed air treatment system solutions.
Is KSI Filtertechnik a public or private company?
KSI Filtertechnik is a private company. It is classified as family owned and is currently operating.
When was KSI Filtertechnik founded?
KSI Filtertechnik was founded in 1996. It employs 101 to 250 people.
Where is KSI Filtertechnik based?
KSI Filtertechnik is headquartered in Willich, Germany, in the Europe region.
How does KSI Filtertechnik make money?
Three revenue lines are on record. Product Sales (Hardware) is the primary driver. The others are after-sales Service & Spare Parts and web Shop Sales.
Who are KSI Filtertechnik's main competitors?
Broad incumbents on record are Donaldson Company, Atlas Copco, SMC Corporation, Parker Hannifin and Festo. Direct peers are Beko Technologies, Mikropor, Hi-line Industries, Zander Group and Walker Filtration.
Does KSI Filtertechnik have an API?
No public API is recorded for KSI Filtertechnik.
What industry is KSI Filtertechnik in?
KSI Filtertechnik's product category is Compressed Air Treatment Equipment. Its primary akta.pro industry code is IMAHAKAI, Air Quality & Filtration Equipment (IAQ), with a secondary code of IMAHALAF, Dust Collection & Air Filtration Equipment (Industrial). Its NAICS code is 333413 and its SIC code is 3564.