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This genuine Goodman 22309501 flue pipe is a factory combustion-vent component for the GKS91155DXAF gas furnace and related Goodman/Amana models. It carries flue gases from the heat exchanger and inducer assembly to the venting system, maintaining the sealed, correctly-sized passage that a condensing furnace depends on for safe, efficient exhaust.
Because the flue pipe handles combustion byproducts, exact dimensioning and material rating matter for safety and code compliance. OEM 22309501 is built to the furnace's original diameter, length, and heat spec, ensuring a sealed fit at the inducer and vent connections. Aftermarket substitutes may not match the gasket seat or temperature rating — we strongly recommend OEM for any flue component.
Plan 30–45 minutes. Shut off gas and power, remove the old flue pipe and any gaskets/clamps, seat the new pipe with proper sealing at both connections, and verify no exhaust leaks. Because this is a combustion-side part, we recommend a licensed HVAC technician and a post-install draft/CO check before returning the unit to service.