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The Goodman 20171701 is a genuine OEM condensate drain trap designed as an exact-fit replacement for the Goodman ACSH960453BXAA high-efficiency condensing furnace and compatible 96% AFUE models. In a condensing furnace, the secondary heat exchanger produces acidic condensate that must drain away cleanly; this trap maintains the proper water seal that prevents flue gases from escaping into the cabinet while allowing condensate to flow to the drain.
This genuine Goodman OEM trap is molded to the exact port spacing, inlet/outlet diameters, and water-column height your furnace requires. Generic traps may leak, fail to hold a seal, or fit poorly against the heat-exchanger condensate ports — causing pressure-switch faults and furnace lockouts. The OEM part drops in without modification.
Easy to Moderate — usually 20–30 minutes. Disconnect the inlet and outlet drain hoses, unclip or unscrew the old trap, install the new trap, and reconnect the hoses. Prime the trap with water before restarting so the seal is established. Always shut off power before servicing. A clogged or cracked trap is a common cause of furnace short-cycling, so replacing it often resolves pressure-switch error codes.