Williamson-Thermaflo BoilersWrite a review of Williamson-Thermoflo
Williamson-Thermoflo Co. is an independent business unit of Weil-McLain, the largest cast-iron boiler manufacturer in the United States and itself a subsidiary of SPX Corp. Williamson-Thermoflo offers a full line of oil furnaces, cast-iron boilers and tankless or indirect-fired water heaters for residential, commercial and institutional buildings. SPX's Thermal Equipment and Services division, of which Weil-McLain is a part, posted gross revenues $1,644.2 million in 2011.
Williamson was established in 1890 and Thermoflo was founded in 1946. They partnered in 1999 to become Williamson-Thermoflo and were acquired by Weil-McLain the same year. SPX was founded in Muskegon, Mich., in 1911 as The Piston Ring Co and acquired Weil-McLain in 2001.
Despite the 1999 partnership of the two manufacturers, the company today sells its furnaces, boilers and heaters under two brands: Williamson and Thermoflo. The company promotes the former brand for its easy-to-service design and durable performance, while noting the latter brand's value and range of heating capacities.
The Williamson-Thermoflo range of boilers includes an oil-fired water boiler and the oil-fired water boiler with tankless heater. The company also manufactures an oil-fired steam boiler with optional tankless heater. The entire range is a factory-assembled, cast iron section assembly. Both brands' furnace options are available up to 90 percent AFUE, in single- or variable-speed, and for any number of installation profiles.
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8201 West Calumet Road
Milwaukee, WI 53223
Phone: (800) 736-2378
Williamson-Thermoflo boilers come with a limited lifetime warranty. There is a lifetime warranty against leaking. Williamson-Thermoflo products are serviced through professional heating contractors.