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About Us

Filtration Systems, Inc. was founded in 1980 by Richard Bayerlein, P.E. and his son, Doug, who holds a BSME from SMU. The Bayerleins have extensive experience in the filtration industry, and are the creators of the "Swirl Flow" patent, which combines high flow rates and exceptional dirt-holding capacity in a depth-type filtration cartridge. 

Filtration Systems manufactures air, oil, fuel and process filters at its 40,000 sq. ft. facility, located in Waukesha, WI. We specialize in filtration products for the Energy Sector, primarily diesels, and gas-fired reciprocating engines, turbines, compressors and natural gas processing plants. Filtration Systems has broadened its product line over the years, so that now it can supply virtually every filter used at a compressor station, gas plant or wellhead gas-gathering application. Many filter manufacturers specialize only in air, oil or gas filtration products -- we do it all, and with very competitive pricing! 

Filtration Systems is an OEM-Approved supplier to Cooper Energy Services and Waukesha Engine, and is an ISO-9001-Approved manufacturer. As such, we monitor parameters such as Customer Satisfaction, On-Time Deliveries, the Cost of Quality, Corrective/Preventative Action and Customer Complaints. All of our products are "Made in the USA", with top-quality materials and are priced for optimum performance and value. The company has never had a layoff and is now enjoying double-digit growth for the third year in a row. We have plans to put a third addition onto our building to accommodate this increase in demand. 

Filtration Systems is always looking for distributors, supply houses and manufacturers who want to partner with our successful growth/value business model. We are particularly interested in overseas dealerships, as we see additional usage for our types of products worldwide. Please click on the "Contact Us" navigation bar of this website to receive more information on these exciting business opportunities. 

Statement of Quality

Filtration Systems is Certified per ISO 9001:2008.  We undergo periodic internal and external audits to maintain compliance.  As an ISO-Certified manufacturer, we monitor metrics such as customer satisfaction, cost-of-quality, corrective action and on-time deliveries.  Records are kept on–file for every order, with operator sign-off's and traceability for each line item on every order.  Filtration Systems has a full-time Quality Manager on-staff, to oversee all aspects of its Quality Control functions.