Find AHRI Certified® Residential Boilers
Product-Specific Operations Manual
General Operations Manual
Test Procedures and Regulations
Witness Testing Application Forms
This program applies to gas and oil-fired steam and hot water heating boilers with inputs less than 300 MBh certified to comply with the applicable rating standard.
Definition of a Heating Boiler. A heat exchanger, designed with and for fuel-burning devices and other equipment to (1) burn fossil fuels and (2) transfer the released heat to water (in water boilers) or to water and steam (in steam Heating Boilers) must conform to the safety and material requirements of the current ASME Boiler and Pressure Vessel Code, Section IV: Rules for Construction of Heating Boilers, or have an approved ASME code case.
The following certification program ratings are verified by test:
Heating Capacity, MBH
Annual Fuel Utilization Efficiency (AFUE), %
The rules and procedures for obtaining and maintaining certification are detailed in the Resources section above. The specific Standard listed above details the technical requirements for rating and publishing your product performance, the AHRI General Operations Manual (OM) details the program operational rules that are generic to all of AHRI’s certification programs and lastly, the Product-specific Operations Manual provides the operational rules that are specific to this program along with the required documents and fees. Please ensure that you are familiar with the latest rules and procedures for this program.