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The Goodman 20171701 is a genuine OEM condensate drain trap engineered for the GCV90704CXBA 92%+ AFUE gas furnace and compatible GCV90-series models. In a high-efficiency condensing furnace, the drain trap captures acidic condensate from the secondary heat exchanger and inducer while maintaining a water seal that blocks flue gases from escaping into the drain line. A cracked, clogged, or dried-out trap is a leading cause of pressure-switch lockout faults and nuisance shutdowns.
This genuine Goodman part matches factory port spacing, barb sizing, and trap geometry exactly, ensuring a proper seal and correct pressure-switch operation. Generic universal traps often require adapters, may not hold the correct water column, and can trigger persistent error codes. For reliable, code-compliant condensate handling we recommend the OEM 20171701.
Easy (2/5). A typical replacement takes 15–30 minutes with basic hand tools. Power off the furnace, disconnect the drain hoses, remove the old trap, prime the new trap with water, and reconnect. No special tools required. If you are unsure about condensate routing, consult a licensed HVAC technician.