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The B4022700 is a genuine Goodman/Amana 3-inch in-shot burner engineered for the AMH81405DXCF gas furnace and related Goodman models. The in-shot burner directs the gas-air mixture into the heat exchanger for smooth, quiet ignition and an even, stable flame. Over time, burners corrode, warp, or collect debris, leading to rough ignition, uneven heating, and flame-rollout trips. Installing a fresh OEM burner restores reliable, efficient heating.
OEM burners match the exact venturi geometry and port pattern of your furnace, which controls flame shape and combustion quality. Generic burners can alter the flame profile and cause hot spots or incomplete combustion. For heat-exchanger longevity, OEM is recommended.
Moderate — shut off gas and power, remove the burner assembly, swap the individual burner, and align it to the orifice and heat-exchanger inlet. Basic hand tools and furnace service knowledge required.