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The Goodman B4022700 3-inch In-Shot Burner is a genuine OEM replacement for the ACVC81005CXCA gas furnace and many compatible Goodman and Amana 80% AFUE models. The in-shot burner directs the gas/air mixture into the heat exchanger tube where it ignites — over time burners rust, corrode, or develop carbon buildup that causes uneven flame, delayed ignition, or rumbling. Replacing worn burners restores clean, efficient combustion.
Genuine OEM burners are stamped to factory dimensions so the burner ports align precisely with the heat exchanger and gas orifices. Generic burners can misalign the flame, causing flame rollout or hot-spot cracking in the heat exchanger. OEM ensures a correct, safe flame pattern.
Moderate (3/5) — Requires removing the burner assembly and gas manifold. Replace burners as a matched set for even firing. Recommended for an experienced DIYer or HVAC technician; verify orifice alignment before relighting.