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The Goodman 20171701 is a factory-original condensate drain trap engineered for the WGFM295090V5DAB 96%+ AFUE modulating gas furnace and compatible Goodman/Amana high-efficiency models. This trap maintains the water seal that lets the secondary heat exchanger drain condensate freely while blocking flue gases from escaping through the drain line. A cracked, clogged, or missing trap is the most common cause of pressure-switch lockouts and nuisance shutdowns on condensing furnaces.
Our OEM Goodman trap matches the original port geometry, seal depth, and mounting footprint exactly — no adapters, no leaks. Generic universal traps often require re-routing the drain hoses and can seat the pressure switch incorrectly. Choose OEM for a guaranteed drop-in fit and full warranty compliance.
Rating: Easy (1/5). Power down the furnace, disconnect the drain hoses, unclip the old trap, seat the new one, and reconnect. Typically a 10–15 minute job with no special tools. Flush the trap with water to prime the seal before restarting.