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The Goodman B4022700 3-inch In-Shot Burner is a genuine OEM gas burner for the Amana/Goodman AMH81205DNAA furnace and compatible 80% AFUE models. In-shot burners deliver a precise gas/air mixture into each heat-exchanger tube for clean, efficient combustion. Over time, burners can rust, warp, or clog with lint and scale, causing rough ignition, delayed light-off, sooting, or an uneven flame. Replacing worn burners restores quiet, efficient heating.
The OEM B4022700 is manufactured to the exact port size, throat geometry, and mounting hook of this furnace, ensuring proper flame alignment into each heat-exchanger tube. Mismatched aftermarket burners can misfire, impinge on the exchanger, or fail flame sensing. For a combustion component, always use the genuine OEM burner. Replace all burners as a set for even performance.
Moderate (3/5). Requires removing the burner assembly, gas manifold, and orifices to slide the burner off its rail, then reassembling and verifying flame quality. Best performed by an HVAC professional; budget 30–45 minutes.