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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner for the Goodman/Amana AMH80904BXCA gas furnace. In-shot burners deliver the gas/air mixture into the heat exchanger tubes where it ignites, and each furnace uses one burner per heat-exchanger cell. A rusted, clogged, or misfiring burner causes uneven flame, delayed ignition, rollout trips, or poor heating output.
The genuine Goodman B4022700 is stamped to the precise venturi and port geometry the furnace was rated with, so flame carryover, orifice alignment, and BTU input stay within spec. Generic burners can shift flame position and cause flame-sensor or rollout faults. Replace all burners in the assembly as a set for even ignition.
Moderate (3/5). Requires shutting off gas and power, removing the burner assembly bracket, aligning the burner to its orifice, and reseating it squarely under the flame sensor and igniter. Best performed by an HVAC technician who can verify flame and combustion after install.
Verify your model and serial before ordering.