Williamson-Thermaflo
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Corporate Summary
Williamson-Thermoflo Company is an independent business unit of
Weil-McLain, which is the largest cast-iron boiler
manufacturer in the U.S. and a part of SPX Corporation. 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 Corporation's annual sales were US $4.29 billion in 2005.
Williamson-Thermaflo Company HeadQuarters
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Milwaukee, WI
USA
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Corporate History
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. United Dominion acquired
Weil-McLain in 1993. SPX was founded in Muskegon, Michigan in 1911 as The Piston Ring Company. The
company name was changed to Sealed Power Corporation in 1931 and the current name, SPX, was adopted
in 1988.
Product Lines
The Williamson-Thermoflo range of boilers includes the OWB Oil-Fired Water Boiler and the Oil-Fired
Water Boiler with tankless heater. They also have an Oil-Fired Steam Boiler with optional tankless heater.
The entire range is a factory-assembled cast iron section assembly. The Thermoflo Gas-fired water boiler
is an Energy Savings USA choice in the category of high efficiency, low-price gas boilers.
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Contacting Williamson-Thermaflo
Phone: 800-736-BEST (2378)
Mail:
Williamson-Thermoflo
8201 West Calumet Road
Milwaukee, WI 53223
USA
Williamson-Thermaflo's Warranty
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.
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