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The Goodman 20171701 is a genuine OEM condensate drain trap assembly for the Amana/Goodman AMH950905CXAA high-efficiency gas furnace. In a 90%+ condensing furnace, combustion produces acidic water that must drain freely while the trap blocks flue gases from escaping through the drain line. A cracked or clogged trap triggers pressure-switch faults, water leaks, and intermittent lockouts — this exact-fit replacement restores proper drainage and sealing.
The OEM Goodman trap matches the exact port layout, height, and mounting geometry of your furnace, so the internal passages align and seal as designed. A Generic trap may claim compatibility but differences in port position or trap depth can cause slow drainage or pressure-switch chatter. For a condensing furnace, OEM fit is the reliable choice.
Moderate (2 of 5). Turn off power, disconnect the condensate and vent tubing, remove the mounting screws, and swap in the new trap — priming it with clean water before start-up. Confirm hose routing matches the original and check for leaks and proper drainage during the first cycle. About 20–30 minutes.