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The B4022700 is a genuine Goodman/Amana 3-inch in-shot burner designed for the ACEC800603BXAB gas furnace. Each in-shot burner mixes gas and air and directs a clean, stable flame into its corresponding heat-exchanger tube. Over time burners corrode, rust-flake, or develop flame rollout from a cracked venturi. Replacing a damaged burner with this exact-fit OEM part restores efficient, quiet, blue-flame combustion and proper heat-exchanger heating.
Burner geometry directly affects flame stability and CO output, so the OEM B4022700 is the recommended replacement. It matches the factory venturi bore and mounting slot exactly, ensuring correct gas-to-air mixing. Generic burners can alter flame characteristics and may not align with the existing orifice spacing.
Moderate. Replacing a burner means removing the burner-box cover, sliding the burner off its mounting rail, and aligning it with the gas orifice. Plan 30–45 minutes. Shut off gas and power first. We strongly recommend a licensed technician verify flame and check for proper combustion after installation.