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The Goodman B4022700 3-inch In-Shot Burner is a genuine OEM burner designed for the ADVC80805CXAA gas furnace and compatible Goodman/Amana models. In-shot burners deliver a precisely shaped gas flame into each heat-exchanger tube for efficient, even combustion. Over time burners can rust, clog, or distort, causing rough ignition, delayed light-off, or uneven heating. Replacing worn burners with the exact OEM part restores reliable, quiet startup and proper flame characteristics.
The OEM in-shot burner is sized and ported to match the furnace's manifold, orifices, and heat-exchanger geometry, ensuring correct flame length and gas mixing. Generic burners may misfire or produce improper flame patterns that trip flame sensors or affect efficiency. Match burners as a set when possible for consistent performance.
Moderate. Requires removing the burner assembly and aligning the burner with the manifold and igniter/sensor. Recommended for a licensed HVAC technician; verify flame sensing after install. Disconnect gas and power first.