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The Goodman 20171701 Condensate Drain Trap is a genuine OEM part built for the Goodman GKS90453BXAD 90%+ AFUE condensing gas furnace. In high-efficiency furnaces, combustion produces acidic condensate that must drain freely while the trap maintains a water seal that blocks flue gases from escaping into the cabinet. A cracked or clogged trap is one of the most common causes of pressure-switch lockouts and water leaks.
The OEM Goodman trap matches the exact port spacing, inlet/outlet diameters, and internal geometry of this furnace's drainage system — critical for a leak-free seal. Universal traps frequently require adapters and can alter drain slope, leading to standing water and repeat lockouts. The OEM part drops in without modification.
Easy to Moderate (2 of 5). Roughly 20–40 minutes. Power down the furnace, disconnect the drain and vent hoses, release the retaining clips, and swap in the new trap in the same orientation. Prime it with water before restarting so the seal is established immediately. No special tools required.
Ships genuine Goodman OEM with fast, tracked delivery.