HVACR
Rensa Filtration Acquires Air Filters Northwest in Oregon
This is the 10th acquisition for Rensa Filtration since 2022.
Air filtration supplies manufacturer and distributor Rensa Filtration has acquired Air Filters Northwest and AFNW Services.
Terms of the deal were not disclosed.
Founded and headquartered in Portland, OR, AFNW has established air filter distribution and service teams in several locations across the U.S. Air Filters Northwest and AFNW Services provide air filtration solutions for applications including healthcare, semiconductor fabs and data centers.
Brandon Ost, CEO and Founder of Rensa Filtration, noted, “We’re excited to partner with Doug and Charlene Potter who founded the business together in 1993. Doug has been an innovator and forward-thinking business leader in the air filtration industry and he and his team helped develop and commercialize innovative solutions including InfiniPleat air filters which use Rensa’s fully synthetic IREMA-Filter media and proprietary pleating technologies. AFNW’s service teams provide comprehensive on-site support that ranges from filter installation and testing to used filter recycling. We look forward to partnering with the AFNW management team, employees and customers during this next phase of growth for the business.”
The acquisition marks the 10th air filtration acquisition since Audax Private Equity invested in Aurora, IL-based Rensa in 2022. Prior to the acquisition of ARNW, Rensa purchased IREMA-Filter and its U.S. subsidiary Aeolus Filter Corp in September 2025.
“In the last year, the Rensa team has organized its North American business into two divisions: Rensa Filter Manufacturing, which produces air filters for OEMs, distributors and major end-users, and Rensa Filter Distribution, which has filter distribution centers supported by sales and service teams in multiple locations across the U.S.,” noted Joe Rogers, a partner at Audax Private Equity.
“Rensa continues to try to enhance its value proposition for clients through expanding its air filter service offerings, growing its local distribution capabilities and presence and through leveraging its vertically integrated supply chain, which includes proprietary filter media, filter manufacturing, and filter installation and replacement services.”
