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The Goodman 22309501 is a genuine OEM flue pipe used to route combustion exhaust within the GKS90453BXAF high-efficiency gas furnace and compatible Goodman/Amana condensing models. This internal vent pipe carries flue gases from the heat exchanger/collector box toward the induced-draft blower and vent connection. Because it handles hot, acidic combustion byproducts, a corroded, warped, or cracked flue pipe can cause draft problems, pressure-switch faults, and unsafe flue-gas leakage. Replacing it with the correct OEM part restores proper venting and safe operation.
The OEM 22309501 matches the exact length, diameter, and gasket seating of the factory flue path, ensuring an airtight seal and correct draft pressure. Generic or improvised flue components risk leaks and improper venting that can trip safeties or create a carbon-monoxide hazard. For a combustion-side part, genuine OEM is strongly recommended and keeps your warranty intact.
Moderate (2/5). Shut off gas and power, remove the access panel, detach the flue clamps/gaskets, swap the pipe, and reseal all connections. Because this is a combustion-venting component, we recommend a qualified HVAC technician verify draft and perform a combustion/CO check before returning the furnace to service.