Find AHRI Certified®
Product-Specific Operations Manual
General Operations Manual
Gas- and oil-fired steam and hot water Heating Boilers with inputs ranging from 300 MBH to 2500 MBH, for which published ratings are available. Custom Boilers are excluded from the program scope. Boiler models within a Model Series, or individual boiler models, having inputs over 2500 MBH may be included in the program at the Participant’s option.
This program independently verifies:
Thermal Efficiency, %
Combustion Efficiency, %