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The Goodman 20171701 Drain Trap is a genuine OEM condensate component for the GCH91155DXAE high-efficiency gas furnace and compatible Goodman and Amana models. The condensate trap collects and drains the acidic water produced during combustion while maintaining a water seal that blocks flue gases from escaping into the drain line. Over time, traps clog with sediment and biofilm or crack from age — a failed trap triggers pressure-switch faults and lockouts, so a clean OEM replacement restores reliable heating.
This OEM Goodman trap is molded to fit the furnace's exact port locations and pressure-switch tubing. Generic universal traps often require adapters and can throw off pressure-switch timing, causing intermittent lockouts. For trouble-free operation, choose the OEM trap.
Moderate (3 of 5). Requires disconnecting condensate and pressure-switch tubing, removing the old trap, and priming the new trap with water before startup. Shut off power and gas first. If you are not comfortable working around the pressure-switch circuit, consult a licensed HVAC technician.