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The Goodman 20171701 is a genuine OEM condensate drain trap for Goodman 90%+ AFUE condensing gas furnaces such as the GKS90453BXAE. The trap collects acidic condensate from the secondary heat exchanger and provides a water seal that prevents flue gases from escaping into the living space. Cracked, clogged, or algae-fouled traps cause water leaks, pressure-switch faults, and lockout codes.
The factory trap is molded with the correct port spacing, orientation, and integrated fittings to match the furnace's condensate outlet and pressure-switch tubing. Generic traps often require adapters that introduce leak points. This genuine OEM 20171701 is a true drop-in with the correct seal height for reliable pressure-switch operation.
Easy to Moderate. Power down the furnace, disconnect the drain and tubing lines, remove the old trap, and mount the new one in the same orientation. Prime the trap with water before restarting. Typical job time is 20–30 minutes.
Inspect and flush the drain line during replacement to prevent repeat clogs.