Current DOE CCMS record

WEIL-MCLAIN WGO-3D Boiler Specifications

Source facts reported to DOE for this exact model identifier.

Key specifications

DOE-reported brand
WEIL-MCLAIN
Exact model number
WGO-3D
Boiler class
Oil-fired hot water boiler
Input capacity
133,000 BTU/h
AFUE
86%
Standby power
11 W
Off-mode power
11 W

DOE source details

DOE basic model number(s)
WGO-7D

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.