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The Goodman B4022700 is a genuine 3-inch in-shot burner for Goodman and Amana gas furnaces such as the AMH80453AXCB. In-shot burners deliver the gas/air mixture into the heat exchanger tubes for clean, quiet ignition and stable flame. Rust, scale, or a damaged burner can cause delayed ignition, roll-out, sooting, or uneven heating — replacing worn burners with the correct OEM part restores a crisp blue flame.
Genuine B4022700 burners are dimensioned and ported to match the furnace's orifice size and heat-exchanger inlets, ensuring the flame lands correctly and combustion stays clean. Mismatched aftermarket burners can alter flame carryover and CO output. For a combustion component, OEM fit is strongly recommended, and burners are typically replaced as a matched set.
Moderate (3/5). Requires shutting off gas and power, removing the burner assembly, swapping the burner(s), and verifying flame carryover and ignition. Best performed by a qualified HVAC technician who can check gas pressure and combustion after service.
Genuine OEM burner. Confirm quantity needed and your furnace's original part number before ordering.