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The Goodman 20171701 Drain Trap is a genuine OEM condensate trap assembly for the Goodman GMS950904CXA high-efficiency gas furnace and compatible models. It collects acidic condensate from the secondary heat exchanger and inducer, maintains a water seal that blocks flue gases from entering the cabinet, and routes drainage safely to your condensate line. A cracked or clogged trap causes water leaks, pressure-switch faults, and nuisance lockouts.
The OEM Goodman 20171701 matches the exact port layout, hose barb sizes, and mounting of your furnace, so all inducer and drain hoses connect without adapters or leaks. Generic traps rarely align with the factory drain plumbing. OEM ensures a clean, leak-free install.
Moderate (2/5). Power down the furnace, disconnect and drain the hoses, unclip the old trap, and transfer connections to the new unit. Flush the trap and confirm the water seal fills on the first heat cycle. Check for leaks before closing the cabinet.