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The Goodman 22309501 Flue Pipe is a genuine OEM exhaust vent component for the GMH950905DXAE 96% AFUE condensing gas furnace. It forms part of the internal flue path that carries combustion byproducts from the heat exchanger and inducer assembly toward the vent connection. Because a condensing furnace's flue handles cool, acidic exhaust, using the correct factory-spec pipe is essential to prevent leaks, corrosion, and improper draft.
This flue pipe is dimensioned to the exact diameter, length, and gasket interface of the GMH950905DXAE cabinet, ensuring a sealed exhaust path and correct pressure-switch operation. Substitute pipe can create draft problems or gasket leaks that lead to nuisance lockouts and, worse, exhaust escaping the cabinet. The OEM part restores factory venting integrity.
Budget 30–45 minutes and confirm your combustion/draft afterward. Power off the furnace and shut off gas, remove the fasteners and clamps securing the old flue section, transfer or replace gaskets, and seat the new pipe squarely. Verify all joints seal and the pressure switch proves before returning to service. When in doubt, use a licensed HVAC technician.