Atmus Filtration Technologies announced that it has entered into a definitive agreement to acquire Koch Filter for $450 million in cash, a move that will expand its presence in industrial and commercial air filtration across several high-growth end markets. The deal, subject to customary closing conditions, is expected to close in the first quarter of 2026 and will be financed with a combination of cash on hand and borrowings under Atmus’ credit facility.
The acquisition gives Atmus direct access to Koch Filter’s established customer network across commercial and industrial HVAC, data centers, and power generation. Koch Filter generated $156 million in revenue for the fiscal year ended September 30, 2025. Atmus expects the deal to be accretive to Adjusted EPS and Adjusted EBITDA margin in 2026 and to achieve a high single-digit return on invested capital by 2028. The purchase price reflects a 13.9x multiple on Koch Filter’s Adjusted EBITDA, or 10.9x when accounting for expected tax benefits and cost savings.
Founded in 1966 and headquartered in Louisville, Kentucky, Koch Filter produces a wide range of HVAC, HEPA, carbon, and specialty filtration systems designed to enhance indoor air quality and system performance. The company operates from multiple U.S. locations and serves customers seeking reliability, contamination control, and operational efficiency.
Atmus believes integrating Koch Filter’s mission-critical consumable products with its own global footprint and filtration media expertise will expand growth opportunities while strengthening its position across the industrial and infrastructure sectors. The company plans to enhance its product portfolio and scale its offerings to meet rising demand for advanced filtration solutions in fast-growing applications such as data centers and distributed power.
Support: The company’s advisors on the transaction include Benesch as legal advisor and Jefferies as financial advisor. Lincoln International advised Air Distribution Technologies and Truelink Capital.
KEY QUOTE:
“The acquisition of Koch Filter will accelerate Atmus’ growth by expanding into the industrial air filtration market, including the growing industrial and commercial HVAC, data center and power generation end-markets. The Koch Filter team brings to Atmus deep, established customer relationships, extensive industry experience and a leading portfolio of consumable mission-critical products. Combining these strengths with our global footprint and expertise in media design positions our company to unlock growth opportunities.”
Steph Disher, Chief Executive Officer of Atmus
