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The OEM Goodman 20171701 condensate drain trap is the factory-designed water seal for the Amana/Goodman AMVC950704CXAE high-efficiency furnace. In a 95% AFUE condensing furnace, combustion produces acidic condensate that must drain freely while the P-style trap holds a water seal that blocks flue gases from escaping through the drain line. A cracked, brittle, or algae-clogged trap is one of the most common causes of pressure-switch lockouts and water leaks under the cabinet.
The genuine OEM 20171701 is molded to the exact port spacing and barb sizing of the Goodman collector box, so it seats without adapters and holds the correct seal depth. Universal traps frequently require cutting, extra fittings, and can sit at the wrong height — changing the seal and triggering nuisance trips. For a leak-free, drop-in fit, OEM is the safe choice.
Power off the furnace, place a towel to catch residual water, disconnect the drain hoses, and swap the trap. Prime the new trap with water before restarting so the seal is established. Typical time is 10–15 minutes with no special tools. A great opportunity to also flush the drain line while you are in there.