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The B4022700 is a genuine OEM Goodman 3-inch in-shot burner for the ADSS800804BXAA 80% AFUE gas furnace. In-shot burners aim a precise gas/air flame into each heat-exchanger tube; one burner is used per exchanger cell, so an 80,000 BTU ADSS section typically uses a matched set. Replace any burner that is rusted, cracked, or producing an uneven, yellow, or lifting flame to restore clean, efficient combustion.
Burner geometry controls flame shape and heat-exchanger flame impingement. The OEM B4022700 is manufactured to Goodman's exact venturi and port dimensions, protecting combustion quality and heat-exchanger life. Aftermarket burners can alter the flame pattern and cause sooting or short cycling — OEM is strongly recommended for combustion components.
Moderate (3/5). Requires removing the burner assembly, aligning the burner to its orifice, and verifying flame and gas pressure after install. Gas-side work should be performed by a licensed HVAC technician; always shut off gas and power first.