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The Goodman 20171701 Condensate Drain Trap is the OEM drain trap assembly for the AMH950453BXAE 95% AFUE furnace and compatible Goodman/Amana high-efficiency models. On a condensing furnace, the secondary heat exchanger produces acidic condensate that must drain freely while the trap maintains a water seal against flue-gas leakage. A cracked, clogged, or brittle trap causes water leaks, pressure-switch faults, and ignition lockouts.
OEM vs. Generic: The OEM trap matches the exact port spacing, barb sizes, and internal geometry of your furnace's drainage layout. Universal traps often require adapters and can create the wrong pressure differential, triggering the pressure switch. OEM ensures a leak-free, drop-in fit.
Install difficulty: Easy — disconnect the condensate hoses, swap the trap, and reconnect. No electrical work. A common DIY maintenance replacement; flush the trap on install to clear debris.