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The Goodman B4022700 In-Shot Burner is a genuine OEM 3-inch burner that delivers the fuel-air mixture into the heat exchanger of your DDS80453AXA gas furnace. Corroded, rusted, or misfiring burners cause delayed ignition, uneven flames, and poor efficiency — replacing worn burners as a set restores clean, quiet combustion.
This genuine Goodman OEM burner matches the original venturi diameter, throat, and flame profile so combustion stays within spec. Generic burners can alter the flame pattern and flame-sensor signal, leading to nuisance lockouts. For proper ignition and heat-exchanger longevity, OEM is the safe choice.
Moderate — requires removing the burner assembly and manifold, then transferring burners one per orifice. Shut off gas and power first. Recommended for experienced DIYers or an HVAC technician; budget 45–60 minutes and verify flame quality after startup.