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The Goodman 20171701 is a genuine OEM condensate drain trap built for the Goodman GCH950453BXAC high-efficiency (90%+) gas furnace and compatible models. In a condensing furnace, the secondary heat exchanger produces acidic condensate that must be routed safely away from the cabinet. This trap maintains the water seal that lets condensate drain while blocking flue gases and preventing pressure-switch faults. A cracked, clogged, or brittle trap is a frequent cause of water leaks, lockouts, and pressure-switch error codes.
OEM (recommended): Exact port spacing, hose barb sizes, and seal geometry for a leak-free, drop-in replacement. Generic: Universal traps exist but often require adapters and re-routing of hoses, raising the risk of leaks and pressure-switch problems.
Easy–Moderate — 2 of 5. Shut off power and gas, disconnect the condensate hoses, remove the old trap, prime the new trap with water to establish the seal, and reconnect. Budget 20–30 minutes and verify no leaks on first run.