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The Goodman 22309501 is a factory-original flue pipe for the GKS90904CXAE gas furnace and compatible Goodman/Amana models. The flue pipe channels combustion byproducts from the heat exchanger to the venting system, a critical safety component for proper draft and complete removal of exhaust gases from the living space.
Venting components are safety-critical. A generic pipe with the wrong diameter or fit can leak flue gases or disrupt draft. The genuine 22309501 matches Goodman's exact dimensions and connection points for a proper, sealed, code-compliant fit.
Moderate (3/5). Because this handles combustion exhaust, we recommend a qualified HVAC technician. Correct sealing, slope, and draft verification are essential; a combustion analysis after installation is strongly advised.