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The Goodman B4022700 3-Inch In-Shot Burner is a genuine OEM single burner for the AMEC800803BXAB gas furnace and compatible Goodman/Amana models. Each in-shot burner directs a precise gas-air stream into the heat exchanger tube for clean, even ignition and efficient heat transfer. Corroded, rusted, or misfiring burners cause delayed ignition, uneven heating, and flame roll-out — a fresh burner restores smooth, reliable firing.
The OEM B4022700 is manufactured to the exact orifice alignment and port pattern the furnace was tuned for, ensuring a correctly shaped flame and clean combustion. Generic burners can alter the burn pattern and cause sooting or CO issues. On a combustion part, OEM is strongly recommended. When replacing one burner, inspect the full set and replace as needed.
Rating: Moderate (3/5). Shut off gas and power, remove the burner box/manifold, slide out the old burner, and align the new one to its orifice. Roughly 30–45 minutes. Because it affects combustion and flame quality, professional installation is recommended.