Current DOE CCMS record

WILLIAMSON-THERMOFLO GWC-175-N-T Boiler Specifications

Source facts reported to DOE for this exact model identifier.

Key specifications

DOE-reported brand
WILLIAMSON-THERMOFLO
Exact model number
GWC-175-N-T
Boiler class
Gas-fired hot water boiler
Input capacity
175,000 BTU/h
AFUE
91%
Standby power
9 W
Off-mode power
9 W

DOE source details

DOE basic model number(s)
GV90+6

Source & freshness

DOE CCMS source page

Source snapshot retrieved: September 20, 2026

These records were reported to DOE. Appearance here is not a DOE compliance determination, independent test, or approval.