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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner for the WFM18115S5CXCC furnace and compatible Goodman/Amana models. In-shot burners direct the gas/air mixture into the heat exchanger tubes for efficient, even combustion. Over time, burners can rust, warp, or clog with debris, causing rough ignition, roll-out, or uneven flame carry-over between burners — replacing the affected burner restores clean, reliable firing.
OEM in-shot burners are matched to the furnace's orifice size and heat-exchanger geometry, ensuring the correct flame pattern and BTU input. Mismatched aftermarket burners can cause poor flame carry-over or sooting. For safe, in-spec combustion, use the OEM B4022700 and replace burners as a matched set when practical.
Moderate (2/5). The burner assembly must be unbolted and slid out to swap individual burners. Verify alignment with the orifice and igniter on reassembly. Always shut off gas and power before servicing; if unsure, use a licensed technician.
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