Established in 2005, Polytechnic Resources, Inc. manufactures pulmonary function testing filters at its Seaford, Delaware facility, making it one of the few U.S.-based suppliers in this field. Its filters are made in the USA under ISO 13485:2016 quality standards, and the company’s facility is powered entirely by solar energy.
ISO 13485:2016
FDA Registered
Registration
FDA
Quality certification
Reading Technologies, IncFounded in 1987 with a single patented filter, Reading Technologies, Inc. manufactures filtration and air-treatment equipment for compressed-air systems. Based in Reading, Pennsylvania, the company has expanded to more than 1,000 models and serves compressed-air applications across the United States and overseas, with custom engineering available when standard equipment does not fit.READING, PA
American Filtration Technologies, IncFounded in 1996, American Filtration Technologies manufactures replacement industrial filter elements and custom-engineered filters at its 30,000-square-foot manufacturing facility. The company produces more than 10,000 unique filter elements, including replacements cross-referenced to over 40,000 OEM part numbers, and states that its products are made in the USA.W HENRIETTA, NY
Filpro CorporationSince 1980, Filpro Corporation has manufactured and distributed industrial filtration products for air, liquid, and gas applications. Based in West Point, Pennsylvania, the company combines its own replacement-filter line with name-brand products and custom designs, serving OEMs and industrial users worldwide. Filpro is particularly distinctive for pairing filtration distribution with in-house design and manufacturing, including replacement elements for dust collection and air-handling equipment.WEST POINT, PA
Filterbuy, IncFilterbuy, Inc. manufactures pleated air filters for residential and commercial use, including custom-sized replacements, and also sells ductless mini-split systems. The company traces its roots to the family-owned Talladega Machinery and Supply Company, founded in the 1950s; Filterbuy was established in 2012 by David Heacock. It says its products are made in the USA, with manufacturing operations in Alabama, Pennsylvania, Texas, and Utah.NEW KENSINGTON, PA