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Restore clean, efficient combustion with the genuine Goodman B4022700 3-inch In-Shot Burner, the OEM burner tube for the AMH81405DNAC 80% AFUE gas furnace and compatible Goodman/Amana single-stage models. Each cell of the burner assembly draws in gas from the manifold orifice and mixes it with primary air to deliver a stable, blue flame across the heat exchanger. Rusted, warped, or clogged burners cause delayed ignition, roll-out, and poor heating performance.
The OEM B4022700 is stamped to precise venturi and port dimensions that match the furnace's manifold pressure and orifice sizing, ensuring correct air/gas mixing and safe flame characteristics. Generic burners may have off-spec venturi throats that shift the flame pattern and trigger flame-sensing faults. For combustion parts, exact OEM geometry matters.
Requires removing the burner box, sliding out the old burner, and aligning the new one to the orifice. Shut off gas and power first. Best performed alongside a full burner-set inspection. Budget 20–30 minutes; a manometer check after install is recommended.