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The Goodman B4022700 3-inch In-Shot Burner is a genuine OEM burner for the AMVC80805CNBB 80% AFUE variable-speed gas furnace. In-shot burners direct the gas/air mixture into each heat-exchanger tube. Rust, scale, or a distorted burner port causes uneven flame, delayed ignition, or roll-out — all signs it's time to replace the burner set.
This OEM Goodman/Amana burner is manufactured to the precise venturi length and port pattern your furnace was engineered around. Generic burners can alter the flame profile and combustion characteristics. For clean, quiet, correctly-shaped flames, replace like-for-like — and always replace burners as a matched set.
Moderate (3/5). Requires removing the burner assembly and manifold; correct alignment with the orifice is critical. Best handled by an experienced DIYer or licensed technician. Shut off gas and power, and verify flame quality after install.