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The Goodman 20214203 is an OEM condensate drain angle engineered for the AMV91155DXAB high-efficiency (90%+ AFUE) gas furnace. In condensing furnaces, combustion produces acidic condensate that must be routed safely out of the heat exchanger and secondary coil area. This molded drain angle directs that condensate to the drain trap and P-trap assembly, preventing pooling, corrosion, and nuisance lockouts caused by a blocked or misaligned drain path.
The genuine OEM 20214203 is molded to the exact angle and port dimensions of the AMV91155DXAB drain assembly, ensuring a leak-free seal at the trap connection. Generic or substitute fittings frequently sit at the wrong angle, causing slow leaks that damage the control board and cabinet over time. For a condensing furnace, correct drainage geometry is not optional — spend the small premium for the factory part.
Easy (1/5). Typically a snap- or slip-fit onto the existing drain assembly with a hand tool. Most DIY-capable homeowners can replace it in under 15 minutes. Always shut off power and gas before servicing.