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The Goodman B4022700 3" In-Shot Burner is a genuine OEM replacement engineered for ADV80703BXA gas furnaces. The in-shot (monoport) burner directs the gas/air mixture into the heat exchanger tube, where it is lit by the hot surface ignitor. Cracked, rusted, or clogged burners cause delayed ignition, uneven flames, and rollout — replacing the burner restores clean, quiet combustion.
Our OEM Goodman burner matches the factory port geometry and orifice alignment exactly, so flame characteristics and BTU output remain to spec. Generic universal burners often require re-drilling or shimming and can throw off the air-to-fuel ratio, leading to sooting or nuisance lockouts. For a furnace, we recommend OEM for safe, code-compliant combustion.
Easy–Moderate (2/5). Requires shutting off gas and power, removing the burner assembly bracket, and swapping the individual burner. Basic hand tools; 15–30 minutes. Verify flame appearance and check for gas leaks after install. If unsure, consult a licensed HVAC technician.