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The Goodman 22309501 is a genuine OEM flue pipe / vent fitting for the WGFM195115S5DAC high-efficiency gas furnace. It carries combustion byproducts from the inducer assembly out through the venting system, and because it handles hot, acidic flue gas it must meet Goodman's exact material and dimensional spec to vent safely and pass inspection.
Flue components are a safety-critical part of the furnace. The OEM 22309501 is built to the correct diameter, temperature rating, and gasket geometry so the vent seals gas-tight and aligns with the inducer and vent connections. Generic or mismatched flue parts risk exhaust leaks, carbon monoxide hazards, and failed inspections. On any venting component, genuine OEM is strongly recommended.
Moderate (3/5). Shut off gas and power to the furnace, disconnect the vent and inducer connections, and replace the flue fitting with new gaskets/sealant where specified. Verify all vent joints are sealed and test for proper draft and no exhaust leakage before returning to service. Professional HVAC installation is recommended for any flue work.