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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner used in the burner assembly of the ACVC81005CXBC gas furnace and compatible Goodman and Amana models. Each in-shot burner directs a precise air/gas mixture into a heat exchanger tube for clean, even combustion. Furnaces use one burner per heat-exchanger cell, so this single burner is sold to match or rebuild your existing set.
This factory OEM burner is machined and ported to deliver the exact flame characteristics the heat exchanger and ignition system expect. Generic burners can alter flame shape and length, leading to flame impingement, sooting, delayed ignition, or flame-sensor faults. For consistent, safe combustion, match OEM across all burners.
Moderate (3/5). Requires removing the burner assembly and aligning the burner with the manifold orifice and heat-exchanger inlet. Shut off gas and power, verify proper flame after restart, and replace as a matched set when possible. Recommended for a qualified technician.