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The Goodman 20171701 Condensate Drain Trap is the genuine OEM trap assembly for the WGFM295045V3BAB and other Goodman/Amana high-efficiency condensing furnaces. In a 96% AFUE furnace, the secondary heat exchanger produces acidic condensate that must drain freely while the trap maintains a water seal — preventing flue gases from escaping and blocking air from being pulled into the drain line. A cracked or clogged trap is a leading cause of pressure-switch lockouts and water leaks.
OEM vs. Generic: The 20171701 is molded to Goodman's exact port spacing and hose diameters, so it seats without adapters and holds the correct water column. Generic traps frequently leak at mismatched fittings or fail to hold a proper seal, letting the furnace short-cycle on pressure faults. Choose OEM for a leak-free, first-time fit.
Install difficulty: Easy (1/5). Most homeowners can replace this trap in 15 minutes — power down the furnace, disconnect the drain hoses, remove the old trap, flush any sludge from the lines, and snap the new trap into place with the hoses reseated on their original ports. Prime the trap with a little water before restarting so the seal is established immediately. Always shut off power before servicing.
Genuine Goodman quality, shipped fast from National HVAC Parts.