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The Goodman 20171701 condensate drain trap is a genuine OEM component for the GDS90805D2AA high-efficiency gas furnace. It collects and drains the acidic condensate produced by the secondary heat exchanger while maintaining a water seal that blocks flue gases from escaping into the cabinet — a critical part for proper 90%+ AFUE operation.
The genuine Goodman trap is molded to match the furnace's port locations, float, and drain routing exactly. Universal traps often require adapters, leak at mismatched fittings, or fail to hold the proper water seal — leading to pressure-switch faults and lockouts. OEM ensures a drop-in, leak-free fit.
Moderate (3/5). Involves disconnecting condensate lines, removing the old trap, and re-sealing tubing connections. Clean or prime the trap with water after installation. Best handled by an HVAC technician; power and gas off before service.