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The Goodman B4022700 3-Inch In-Shot Burner is a genuine OEM replacement for ACES800805CXAA gas furnaces. The in-shot burner directs the gas/air mixture into the heat exchanger tube for ignition, producing the clean, blue flame your furnace needs for efficient and safe heating. Rust, scaling, or a distorted burner port causes rough ignition, flame rollout, or sooting — all signs it's time to replace the burner.
The OEM B4022700 is stamped and ported to Goodman's exact specification so the flame footprint matches the heat exchanger and ignition timing. Generic burners may misalign the flame, leading to delayed ignition or hot spots. For combustion components we strongly recommend OEM.
Install Difficulty: Moderate (3/5). Requires removing the burner assembly and aligning the burner to the manifold orifice. Shut off gas and power, and verify flame quality after installation. Professional installation recommended.