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The Goodman 20171701 is a factory OEM condensate drain trap engineered for the WGFM195115S5DAD high-efficiency gas furnace and compatible Goodman/Amana condensing models. On 90%+ AFUE furnaces, the drain trap captures acidic condensate from the secondary heat exchanger and maintains the water seal that prevents flue gases from escaping into the cabinet. A cracked, clogged, or algae-fouled trap is one of the most common causes of nuisance lockouts and pressure-switch faults.
The genuine OEM 20171701 matches the exact port geometry and seal depth Goodman specifies, so it seats correctly and holds the proper water trap without leaks. Generic universal traps often require adapters and can throw false pressure-switch errors when the seal height is off. For guaranteed fit and clean furnace operation, OEM is the safe choice.
Easy (1/5). Typically a slip-on hose connection secured with clamps. Most homeowners can replace it in 15–20 minutes with a screwdriver and a shop vac. Always shut off power and gas before servicing.