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The Goodman 20171701 is a genuine OEM condensate drain trap built for the GCH90704CXAB high-efficiency gas furnace. In a 90%+ AFUE furnace, combustion condensate must drain away while the trap holds a water seal that blocks flue gases from escaping into the cabinet. A cracked, clogged, or missing trap leads to water leaks, blower-compartment corrosion, and pressure-switch lockouts.
The OEM trap matches the exact port spacing, seal height, and inlet/outlet configuration of your furnace. Universal traps often require adapters and can seat improperly, resulting in leaks or nuisance pressure-switch faults. The genuine Goodman part installs cleanly and maintains the designed water seal.
Easy to Moderate — Power off, disconnect the drain hoses and pressure-switch tubing, unclip the old trap, prime the new trap with water, and reconnect. About 20 minutes with basic tools. Confirm all tubing is fully seated before restoring power.