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The Goodman B4022700 3-Inch In-Shot Burner is a genuine OEM replacement for ACVC800603BXAA gas furnaces. Each in-shot burner mixes gas and primary air and projects the flame into a single heat-exchanger tube. Worn, rusted, or carbon-fouled burners cause uneven flames, delayed ignition, and noisy startups — replacing them restores clean, efficient combustion.
The OEM B4022700 is matched to the furnace's manifold spacing and air-shutter geometry, ensuring the correct flame pattern and proper alignment with the heat exchanger inlet. Generic burners can sit at the wrong depth or angle, leading to flame rollout or soot. For combustion components, OEM is strongly recommended.
Moderate (2/5) — Requires removing the burner assembly and manifold. Shut off gas and power, slide the burner off its orifice, install the new unit at the same depth, and verify the flame pattern after relighting.