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The B4022700 is a genuine Goodman 3-inch in-shot burner for the AMVC801005CNAA two-stage variable-speed 80% AFUE gas furnace. Each burner receives gas from the manifold orifice and directs a stable flame into the heat exchanger tube. Over time burners rust, clog, or develop lazy/yellow flames that cause noisy ignition, delayed light-off, and flame-sensor lockouts. A fresh OEM burner restores crisp, blue, correctly-shaped flames.
Burner geometry and port drilling are matched to the furnace's manifold pressure and orifice size. The OEM B4022700 guarantees the correct flame pattern and heat-exchanger alignment. Generic burners can misfire, roll flame, or overheat the exchanger — never worth the risk on a combustion component.
Moderate (3 of 5). Burners are typically replaced as a full set. Requires removing the burner rack and reseating each burner over its orifice. 30–60 minutes with hand tools. Shut off gas and power, and verify clean ignition afterward. A licensed technician is recommended for combustion work.