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The Goodman 20171701 Condensate Drain Trap is a genuine OEM part designed for the Goodman GMH950904CXAF 95% AFUE condensing gas furnace and related GMH95 series units. In a high-efficiency furnace, the secondary heat exchanger produces acidic condensate that must drain freely while the trap maintains a water seal — blocking combustion gases and pressure switch interference. A cracked, clogged, or missing trap causes water leaks, pressure-switch faults, and lockout codes.
The GMH95 cabinet is tight, and drainage geometry is model-specific. This factory-original trap matches the furnace's port spacing, inlet/outlet orientation, and seal height exactly. Generic traps frequently require adapters, leak at mismatched fittings, or throw off the pressure-switch reading. OEM ensures a clean, sealed fit the first time.
Power down the furnace, disconnect the condensate tubing, remove the old trap, and clip the new one into place — then reconnect the drain lines and prime the trap with water to establish the seal. Inspect the tubing for sludge or algae buildup while you are in there. Most homeowners can complete this in under 20 minutes.
Genuine Goodman OEM condensate trap — precise fit for the GMH950904CXAF.