Advantage Boiler Manuals

2 Advantage boilers with owner guides and verified specifications

Select your Advantage model number below for installation steps, settings, maintenance schedules, troubleshooting and the full specification sheet. Your model number is printed on the rating plate.

Advantage boilers by model number

Advantage Boiler Manuals

Model	Description	Certified
AO-3-075EAO	87% AFUE non-condensing oil-fired boiler	October 2025
AO-4-120EAO	87% AFUE non-condensing oil-fired boiler	October 2025