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The Goodman 20171701 Condensate Drain Trap is a genuine OEM replacement engineered for the GKS90704CXAD gas furnace. The drain trap collects and channels condensate away from the heat exchanger and inducer assembly, maintaining the water seal that keeps flue gases from backing up into the cabinet. A cracked, clogged, or missing trap is a common cause of furnace lockouts, water leaks, and pressure-switch faults.
This is the factory OEM Goodman part, guaranteeing correct port spacing, water-seal depth, and mounting geometry. Generic universal traps often require adapters and can leak or fail the pressure-switch test. Choose OEM for a drop-in fit and reliable operation.
Easy (2/5). Power down the furnace, disconnect the drain lines, remove the old trap, and snap the replacement into place. Typical DIY job of 20–30 minutes with basic hand tools. Always confirm the trap is primed with water before restarting.