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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner designed for the Goodman ADSS800603AXAB gas furnace. Each in-shot burner directs a precise fuel-air mixture into the heat exchanger tube, producing the clean, blue, evenly distributed flame required for efficient and safe combustion. Rust, corrosion, or lint buildup on a worn burner causes rollout, delayed ignition, and yellow-tipped flames — this OEM replacement restores factory ignition performance.
Genuine OEM in-shot burners have factory-calibrated venturi throats and flame slots that match your furnace's gas valve pressure and orifice sizing. Generic burners can alter the flame pattern, leading to CO production or nuisance limit trips. When burners fail, replace them as a matched set for even heating across all tubes.
Moderate (3/5). Requires shutting off gas and power, removing the burner box/manifold, sliding out the old burner, and aligning the new one with the orifice. Verify flame quality and check for gas leaks with soap solution after reassembly.
Combustion work carries safety risk. If you're not confident, have a licensed HVAC professional perform the replacement.