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The B4022700 is a genuine OEM 3" in-shot burner for the Goodman/Amana ADV81155CXBB gas furnace and compatible multi-burner models. Each in-shot burner directs the air/gas mixture into a single heat-exchanger tube, where it ignites off the carryover/crossover and produces a clean, stable blue flame. Rust, scale buildup, or a deformed burner port causes noisy ignition, delayed light-off, flame rollout, or sooting — all corrected by replacing worn burners.
The OEM B4022700 is built to Goodman's exact port pattern and length, ensuring correct flame shape, proper carryover ignition, and safe combustion. Generic burners can differ in port sizing, disturbing the flame pattern and risking rollout or incomplete combustion. For a combustion component, OEM is strongly recommended.
Moderate (~45–60 minutes). Requires shutting off gas and power, removing the burner box/manifold, and swapping burners while noting orientation and igniter/flame-sensor position. Verify flame pattern and check for proper ignition after service. Technician experience recommended for combustion work.
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