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The B4022700 is a genuine Goodman/Amana 3-inch in-shot burner engineered for the AMH80403ANAA 80% AFUE, 40,000 BTU multi-position gas furnace and compatible AMH8-series units. Each in-shot burner directs a precisely shaped gas/air flame into a single tube of the furnace's stainless-steel heat exchanger. Clean, correctly aimed burners are essential for efficient combustion, quiet ignition, and safe operation — a corroded, rust-flaked, or misaligned burner can cause delayed ignition, sooting, and heat-exchanger stress.
Genuine OEM in-shot burners are stamped and slotted to Goodman's exact flame-geometry spec, so the flame lands correctly in the heat-exchanger tube and lights off the adjacent burner cleanly. Generic burners frequently vary in slot pattern and throat diameter, which can cause rollout, uneven flame carry-over, and premature failure. When replacing burners, install a matched set for consistent combustion.
Moderate (3/5). Requires removing the burner assembly, transferring or replacing burners individually, and verifying flame alignment on restart. Shut off gas and electrical power before servicing, and check for proper flame sensing and ignition afterward. If you're not comfortable working around the gas manifold, hire a licensed HVAC professional.
Order the genuine Goodman B4022700 in-shot burner and restore clean, efficient combustion to your furnace.