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The Goodman 20171701 Condensate Drain Trap is a genuine OEM component for the Goodman GCH90905DXAB high-efficiency gas furnace. This molded trap collects and drains acidic condensate produced by the secondary heat exchanger while maintaining a water seal that blocks flue gases from escaping into the cabinet or living space.
OEM Goodman traps are molded to match the furnace's exact port locations and internal seal geometry, ensuring proper drainage and pressure switch operation. Generic or universal traps often require adapters and can misalign ports, leading to leaks, blocked drains, and pressure-switch lockouts. OEM ensures a true drop-in fit.
Moderate (3/5). Requires disconnecting condensate lines and tubing, then priming the trap with water before restart. Plan 30–45 minutes. Power off the furnace and clear the drain lines during replacement.