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The B4022700 is a genuine OEM Goodman 3-inch in-shot burner for the AMVC80603BNBC variable-speed 80% AFUE gas furnace. In-shot burners direct a precise jet of gas-air mixture into each heat-exchanger tube, producing the clean, stable blue flame required for efficient, safe combustion. Rusted, corroded, or clogged burners cause delayed ignition, roll-out, sooting, and uneven heating — replacing worn burners restores reliable startup and full heat output.
Burner geometry and port sizing are matched to the furnace's gas orifices and heat exchanger. A generic burner can alter the flame pattern, leading to flame impingement or incomplete combustion. This genuine OEM burner reproduces the exact factory flame profile for safe, in-spec operation. Replace all burners as a set for consistent performance.
Moderate — requires removing the burner assembly, sliding out the affected burner, and confirming alignment with the orifice and heat-exchanger inlet. About 30–60 minutes. Shut off gas supply and power first; a combustion check is recommended after service by a qualified technician.
Need the matching orifices or gas valve? Contact info@nationalhvacparts.com.