Bornmann Manufacturing has been handcrafting custom steel radiator enclosures in Philadelphia since 1951, turning exposed heating elements into fitted, functional covers. Now in its third generation, the family-owned company measures, builds, and installs each enclosure through its Philadelphia factory, including solutions for tight spaces and baseboard units. Its covers have been used at local institutions including Villanova University and Longwood Gardens.
Cavalier Steel and Fence CompanySince 1960, family-owned Cavalier Steel and Fence Company has installed and repaired fences and supplied do-it-yourself fencing for homes, businesses, and industrial properties across Greater Philadelphia. Founded by Michael Liberi Sr. and his brother Benjamin in Southwest Philadelphia, the company moved to Darby in 1982 and remains a generational business, with Anthony Liberi joining his father in 2023. Its old-school approach includes custom work, local service, and warranties on materials and workmanship.331210DARBY, PA
Active RadiatorFamily-owned since 1940, Philadelphia-based Active Radiator manufactures heavy-duty heat exchangers and cooling components for truck fleets, construction and industrial equipment. Its in-house engineers can reverse-engineer obsolete or discontinued parts, while its 141,000-square-foot manufacturing plant and 90,000-square-foot warehouse support both custom production and stocked replacement units. Active also backs its products with cleaning, repair and recoring services through a nationwide distribution network.336390SANTA FE SPRINGS, CA
CastradsSince 2006, family-run Castrads has designed and produced custom cast-iron radiators for homes and interiors, with its own exclusive designs developed by an in-house team. Drawing on three decades of experience reconditioning antique radiators, the company also restores original units and operates across Manchester, London, New York and Poland. Castrads’ specialist knowledge even extends to purpose-built tools developed for assembling its oversized radiators.BROOKLYN, NY
O'Donnell Metal FabricatorsFamily-owned and American-made since 1981, O’Donnell Metal Fabricators designs, engineers, and builds custom metal parts and assemblies from its Greater Philadelphia-area shop. Its fully in-house operation takes projects from CAD concepts and prototypes through production, finishing, and field installation, including custom stainless steel work for clients throughout the tri-state region and beyond. The company serves as a single fabrication partner when standard components do not fit the job.NORRISTOWN, PA