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Williamson-Thermoflo

Williamson-Thermoflo

5 certified hvac models

Boilers

AFUE across all boilers: 87 to 97 %, median 95.

FS-120-*Boiler95%
FS-155-*Boiler95%
FS-80-*Boiler95%
GWC-070-N-TBoiler91%
GWC-175-N-TBoiler91%

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Specification data sourced from the U.S. EPA ENERGY STAR certified product datasets, used under the EPA Data License. SpecDirectory is not affiliated with or endorsed by the EPA or the ENERGY STAR program.