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The Goodman 20171701 is a genuine OEM condensate drain trap designed for the GMV950453BXA 96% AFUE condensing gas furnace. As high-efficiency furnaces extract heat from the flue gases, water vapor condenses and must drain away continuously. This trap maintains a water seal that lets acidic condensate exit while blocking flue gases from being pulled back into the cabinet through the drain line — protecting the secondary heat exchanger, inducer, and control board.
The genuine Goodman OEM trap matches the exact port layout, height, and float/seal geometry of your furnace's drain system. Generic traps often route incorrectly or hold the wrong water column, causing gurgling, condensate backup, or pressure-switch faults. For reliable drainage, OEM is the safe choice.
Easy to moderate — DIY friendly (20–30 minutes). Disconnect the inlet and outlet hoses, remove the old trap, and prime the new trap with water before installing to establish the seal. Check for leaks and confirm free drainage after a heat/cool cycle. Shut off power before servicing.