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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner engineered for the AMS80804BXAA gas furnace and compatible Goodman/Amana models. Each in-shot burner delivers a precisely shaped gas flame into the heat exchanger tube for efficient, clean combustion. Over time, burners can rust, clog, or distort—causing rough ignition, delayed lighting, or uneven heating. Replacing worn burners restores smooth, quiet startup and full heating output.
The OEM burner is manufactured to the exact venturi geometry and orifice alignment the AMS80804BXAA was designed around, ensuring proper flame shape and combustion. Generic burners can misalign with the manifold or produce an incorrect flame pattern, risking sooting, flame-sensor faults, or heat-exchanger stress. OEM is the safe choice for combustion components.
Moderate — requires removing the burner box/manifold and aligning the burner to its orifice. Best performed by an HVAC technician; replace all burners as a set for even combustion. Always shut off gas and power before servicing.