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The Goodman B4022700 3-inch In-Shot Burner is a genuine OEM replacement burner tube for AMH80805CNAA gas furnaces. Each in-shot burner mixes gas and primary air and directs a clean, stable flame into the heat-exchanger tube. Over time burners corrode, clog with debris, or distort from heat, causing rough ignition, flame rollout, or delayed light-off. Replacing worn burners restores quiet, reliable ignition and efficient, complete combustion.
The genuine OEM B4022700 is stamped to the exact venturi geometry and mounting slot of the original, so flame carry-over between burners and flame-sensor rectification stay within spec. Generic burners can shift flame position and trigger flame-sense or rollout faults. When burners are replaced, we recommend replacing the full set for even firing.
Moderate (3/5). Requires shutting off gas and power, removing the burner assembly bracket, sliding out the old burner, and verifying alignment with the igniter and flame sensor. Gas-appliance work should be performed by a qualified HVAC technician, and the flame should be checked after reassembly.