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The Goodman 20171701 Condensate Drain Trap is a genuine OEM part for the Goodman GKS90904CXAG high-efficiency (90%+) gas furnace and compatible GKS90-series models. In condensing furnaces the trap collects acidic condensate from the secondary heat exchanger and inducer, routing it to the drain while maintaining a water seal that blocks flue gases from escaping into the cabinet. A cracked or clogged trap causes water leaks, inducer errors, and pressure-switch lockouts.
This Goodman OEM trap matches the exact port sizes, orientation, and seal geometry of your furnace's drainage system. Universal traps often require adapters that leak or alter drainage flow, triggering pressure-switch faults. For proper fit and reliable condensate handling, the OEM trap is the safe choice.
Moderate — Involves disconnecting condensate hoses, clearing existing blockage, and re-seating the trap with a proper water seal. Have towels ready for residual condensate. DIY-friendly for a mechanically inclined owner; otherwise use an HVAC technician.