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The Goodman 22309501 Flue Pipe is a genuine OEM venting component for the WGFM195045S3BAC high-efficiency gas furnace and compatible Goodman/Amana models. It carries combustion byproducts from the inducer to the vent connection with the exact diameter, length, and flange geometry the cabinet requires. Correct flue routing is a combustion-safety item — a proper OEM pipe keeps joints sealed and the inducer/pressure-switch system reading the draft it was designed for.
Substituting a generic pipe risks the wrong diameter or a poor gasket seat, which can leak flue gas, distort draft readings, and nuisance-trip the pressure switch. This OEM flue pipe drops in with the original clamps and seals, protecting both combustion safety and your equipment warranty.
Moderate (3 of 5). Because this is a combustion-venting part, shut off gas and power, remove the existing pipe, seat the new section with the correct gaskets/clamps, and verify a sealed joint and proper draft before returning the furnace to service. A combustion analyzer check is recommended — have a qualified HVAC technician confirm venting.