Silhouetted figures of a family with luggage walking in an airport terminal, with a plane taking off against a vibrant sunset in the background.Silhouetted figures of a family with luggage walking in an airport terminal, with a plane taking off against a vibrant sunset in the background.Abstract geometric design with a black background and white lines converging towards the center, forming a V-shaped pattern.Abstract geometric design with a black background and white lines converging towards the center, forming a V-shaped pattern.
Triangular shape with a sharp, pointed end at the right over a white background, creating a stark contrast.Triangular shape with a sharp, pointed end at the right over a white background, creating a stark contrast.

Clean air, bold beginnings

From the start, Rensa has relentlessly pursued cleaner air solutions, leveraging decades of expertise to push the boundaries of the industry. Trace our journey of challenging industry norms and championing healthier environments.

2017

Beginning a new era.

In a strategic move to redefine the industry, Brandon Ost partnered with Duchossois Capital Management and Edgewater Funds to form Air Filtration Holdings. The acquisition of Viskon-Aire, renowned for its commercial and industrial filtration prowess, was the first step in transforming filtration solutions.

A man in a white shirt talks to three people in a factory setting. Two of them wear baseball caps, and one is sitting down. Machinery and industrial equipment are visible in the background.
Viskon-Aire

Founded in 1979, Viskon-Aire has carved out a premier position in air and paint filtration. Known for its robust and innovative filtration solutions, Viskon-Aire serves a diverse range of applications, from commercial and industrial HVAC systems to paint spray booths around the globe.

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2018

Rebranding and expanding.

Transitioning to Rensa Filtration, the company embraced its Swedish roots, meaning “clean and purified.” This year, Rensa broadened its reach by acquiring Permatron, entering mission-critical markets like data centers and refrigeration. Permatron’s long-standing expertise in engineering excellence and product innovation further strengthens Rensa’s offerings, ensuring high-performance air purity solutions tailored to evolving industry standards.

Permatron

Founded in 1957, Permatron brings over six decades of expertise in designing customized, high-performance air filter solutions that are integrated and performance-matched for any application. As pioneers of electrostatic air filter technology, they offer an extensive product line that includes their flagship PreVent air intake screens, recognized as the leading choice for effective HVAC protection.

Permatron’s expertise extends to designing filters for specific, often challenging environments, ensuring superior performance and durability across all their offerings.

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An industrial HVAC system with large metal pipes and cooling units is set up outdoors.

2019

Rebranding and expanding.

Rensa further solidified its position in the air filtration market by acquiring D-Mark, a leader in molecular filtration. This acquisition expanded Rensa’s offerings into odor and gas removal applications. Integrating D-Mark’s innovative carbon technology and Rensa’s robust product portfolio marked a significant step towards addressing diverse industry needs with advanced molecular filtration solutions.

D-Mark

Founded in 1970, D-Mark has established itself as a leader in the development and production of innovative carbon media and odor control solutions.

Their portfolio includes proprietary products like CarbonWeb® and OdorGuard®, designed for a wide range of applications, from HVAC systems to industrial processes, ensuring effective air quality management and odor elimination.

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2020

Becoming a full-suite leader.

Rensa welcomed Air Filters Inc. into its family, significantly enhancing its product lineup. This strategic acquisition positioned Rensa as a comprehensive provider of groundbreaking air filtration solutions ready to meet the diverse demands of various industries.

Air Filters Incorporated

With over 65 years of experience, Air Filters Inc. specializes in custom and high-volume air filtration manufacturing. They cater to diverse sectors, from healthcare to industrial settings, offering products from pleated to HEPA filters. Their proprietary Expand-A-Pleat™ technology makes them a vital player in delivering high-quality, versatile filtration solutions.

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2021

Elevating filtration standards.

Committed to unparalleled quality and efficiency, Rensa acquired Custom Filter, specializing in bespoke, high-performance HEPA and ULPA products—completely custom filters tailored to customers’ needs, going beyond standard market offerings.

Image showing three types of air filters: a rectangular filter with a black frame, a circular filter with a red cap, and a trapezoidal filter in a white frame.
Custom Filter

Custom Filter excels in creating specialty HEPA and ULPA filters, backed by over 60 years of expertise in air filtration. Renowned for their comprehensive in-house engineering services, they provide tailored solutions from filter design and prototyping to testing, meeting stringent demands across various industries.

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2022

Building the future.

This year was marked by significant geographical and strategic expansion, with the opening of Rensa Southwest in Las Vegas and the groundwork for Rensa Midwest. The partnership with Audax Private Equity and the acquisition of Air Filter Supply—Rensa’s first foray into distribution—underscored the company’s commitment to growth and innovation.

Air Filter Supply

Air Filter Supply, established in every major city in California, specializes in providing personalized air filtration solutions tailored to each client’s specific needs. They offer a robust online, cloud-based management system that simplifies filter maintenance, ensuring efficient delivery and installation directly to client sites.

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2023

Amplifying Rensa’s impact.

Rensa strengthened its market position through key acquisitions: Air Filter Engineers, APC Filtration, Downing Filtration, R.P. Fedder Industrial, and Smith Filter Corporation. Each acquisition was targeted to enhance Rensa's distribution capabilities, custom manufacturing, and specialty offerings like metal mesh filters, boosting its presence in strategic regional markets.

A man sits on a stool and operates a green industrial machine in a workshop environment. He smiles at the camera while adjusting controls. The workshop has tools and equipment in the background.

2024

Uniting under ‘One Rensa’.

A landmark year for integration and unity, Rensa Filtration brought together its diverse acquired companies under a single banner. The official launch of Rensa Midwest marked the culmination of a strategic vision to streamline operations and strengthen market presence.

12 million

products produced per year, enhancing air quality worldwide.

42,000+

products, so the customization possibilities are endless.

1,000+

dedicated employees at the forefront of advocating for air quality.

16 locations and counting

A map of the United States and Canada showing various Rensa Filtration locations, including headquarters, manufacturing sites, and factory-direct branches marked with different symbols.

Learn more about
the company

Learn more about
the company