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The Goodman 22309501 is a genuine OEM flue vent pipe built as an exact-fit replacement for the GKS90703BXAH gas furnace. The flue pipe channels combustion byproducts from the heat exchanger to the inducer and vent system, and it is a safety-critical component—cracks, corrosion, or a poor seal can allow flue-gas leakage. Replacing a damaged flue pipe with the correct OEM part restores proper draft and safe venting.
OEM flue components are dimensioned to mate precisely with the collector box, inducer, and gaskets on this furnace, maintaining the sealed pathway the design requires. Aftermarket or field-fabricated venting risks gaps and improper draft that can trip the pressure switch or, worse, leak combustion gases. For a safety component, use the genuine Goodman part.
Moderate (3/5). Requires removing the furnace panel, disconnecting the existing flue connection, and reseating gaskets to a proper seal. Combustion-side work should be done by a qualified HVAC technician, followed by a combustion/draft check. Shut off power and gas before servicing.