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The B4022700 is a genuine OEM 3-inch in-shot burner for Goodman GDH80403AXAA gas furnaces. Each in-shot burner directs a precise gas-air stream into a single heat-exchanger tube, where it ignites and produces the clean, blue flame your furnace relies on for efficient heating. Over time burners can corrode, clog with rust and debris, or develop uneven flame patterns that trigger flame-sensor faults and short cycling. Replacing worn burners with the correct OEM unit restores smooth ignition and quiet operation.
Genuine Goodman burners are stamped to the exact venturi throat, port pattern, and mounting-slot dimensions of your furnace manifold. Generic burners may bolt in but often alter the flame characteristics, leading to lazy flames, sooting, or nuisance lockouts. For a combustion component, matching OEM tolerances is critical to safe, efficient operation.
Moderate (3/5) — Requires shutting off gas and power, removing the burner assembly bracket, and swapping burners while maintaining alignment with the heat-exchanger tubes and manifold orifices. Recommended for experienced DIYers or an HVAC technician. Always leak-check gas connections after service.