Rensa Filtration Announces Acquisition of Smith Filter

Rensa acquires a leader in metal air filters, expanding its product portfolio and manufacturing capabilities

AURORA, Ill.--()--Rensa Filtration, a manufacturer and distributor of consumable, mission-critical air filtration products, announced today that it recently completed the acquisition of Smith Filter, based in Moline, IL. This acquisition expands Rensa’s product portfolio into metal air filters. Smith’s metal filters help protect equipment and processes in commercial and industrial filtration applications involving high temperatures and harsh environments.

“I am pleased that Sharilyn, Jim and Matt Solis and the Smith Filter team decided to partner with Rensa to support the next phase of growth for their company,” said Brandon Ost, CEO and Founder of Rensa Filtration. “Smith Filter is an iconic brand known for high quality metal air filters. I want to thank Sharilyn and Jim for their leadership and commitment to the air filter industry and wish them well in their retirement.”

Matt Solis and his management team will continue to lead the Smith Filter business and manufacturing operations in Moline.

“This is an important milestone in the history of Smith Filter,” said Sharilyn Solis, co-owner of Smith Filter. “My grandfather and great-grandfather started Smith Filter 84 years ago here in Moline. We are pleased that we can continue to build on our family’s legacy and partner with Rensa as our customers will gain access to Rensa’s broad range of innovative air filters.”

Smith’s metal air filters represent another key category in Rensa’s growing offering of specialty air filters. In addition to pleated filters, bag filters, high capacity filters and high efficiency filters used across many applications, Smith metal filters will complement Rensa’s Permatron® brand of low-pressure drop intake filter screens and Rensa’s D-Mark® brand of activated carbon filters used in odor and pollution control applications.

Smith Filter represents Rensa’s tenth acquisition, and the fifth acquisition under Audax Private Equity since the firm’s investment in 2022.


Rensa is a leading manufacturer and distributor of air filtration products and now operates ten manufacturing sites and several distribution centers across North America. Rensa offers a wide range of standard and customized HVAC filtration products that provide best-in-class filtration performance and energy savings in education, healthcare and high-tech manufacturing facilities. Rensa also offers specialized air filtration solutions for data centers and activated carbon filters for removal of odors and molecular contamination in museums, airports, and healthcare facilities. For more information, visit and


Based in Boston and San Francisco, Audax Private Equity is a leading middle market investment firm with approximately $18 billion of assets under management, over 210 employees, and 100-plus investment professionals. Since its founding in 1999, the firm has invested in more than 165 platforms and 1,200 add-on acquisitions. Through our disciplined Buy & Build approach, across six core industry verticals, Audax helps portfolio companies execute organic and inorganic growth initiatives that fuel revenue expansion, optimize operations, and significantly increase equity value. For more information, visit or follow us on LinkedIn.


Tim Grafe, EVP of Strategy


Tim Grafe, EVP of Strategy