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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner for the AMEC800803BNAA gas furnace. Each in-shot burner directs the fuel/air mixture into its heat-exchanger tube for clean, efficient combustion. Corroded, rusted, or clogged burners cause poor ignition, delayed light-off, sooting, and uneven heating — replacing them restores smooth, safe operation.
OEM in-shot burners are matched to the furnace's orifice size, port pattern, and heat-exchanger geometry, ensuring the correct flame characteristics and BTU delivery. Generic burners can mis-fire, produce improper flame, or fit poorly — a real safety concern with combustion equipment. Choose OEM for safe, correct operation.
Moderate (3/5). Typically 30–60 minutes depending on how many burners are replaced and manifold access. This is combustion-side work — shut off gas and power, and consider a licensed HVAC technician if you are not experienced.
Verify your model, serial, and gas type before ordering. Genuine Goodman OEM part.