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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner for the AMVC80604BXCA variable-speed gas furnace and compatible Goodman/Amana 80% AFUE models. Each in-shot burner directs a precise gas/air mixture into its heat-exchanger tube for clean, quiet, blue-flame ignition. Rusted, clogged, or misfiring burners cause delayed ignition, roll-out trips, and uneven heating — replace the full set for balanced combustion.
Generic burners often differ slightly in venturi length or port pattern, which shifts the flame and can cause carryover-lighting problems across the manifold. This genuine Goodman OEM burner matches the factory flame geometry exactly, protecting the heat exchanger and keeping combustion in spec.
Moderate (3/5) — Shut off gas and power, remove the manifold/burner assembly, swap the burner, and reinstall. Requires combustion knowledge; verify orifice sizing. 45–60 minutes.