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The Goodman 20171701 Condensate Drain Trap is a genuine OEM part for the GCH950703BXAB 95% AFUE high-efficiency gas furnace. In a condensing furnace, the secondary heat exchanger produces acidic condensate that must drain away while the trap maintains a water seal to keep flue gases from escaping the drain path. A cracked, clogged, or algae-fouled trap causes water leaks, pressure-switch faults, and lockouts — a common cause of a high-efficiency furnace that won't stay running.
The OEM 20171701 matches the port spacing, inlet/outlet sizing, and internal geometry required to seat correctly on this furnace's drain system. Generic traps often require adapters and can defeat the flue-gas seal if the geometry is wrong. The OEM part ensures a leak-free, code-correct connection.
Easy to Moderate — disconnect the drain hoses, unclip the old trap, prime the new trap with water, and reconnect. No gas or electrical work. Confirm proper drainage and check the pressure switch operation after install.