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The Goodman 20171701 is a genuine OEM condensate drain trap engineered as a direct-fit replacement for the GMH951155DXAC high-efficiency gas furnace. A functioning drain trap is essential for proper condensate management in a 95% AFUE condensing furnace — it maintains the correct water seal that prevents combustion gases from escaping through the drain line while allowing condensate to flow freely to the drain. A cracked, clogged, or missing trap is a common cause of nuisance lockouts, water leakage, and pressure-switch faults.
This is the genuine Goodman OEM trap, molded to the exact port geometry and seal depth of your furnace's drain system. Generic universal traps often require adapters, may not hold the correct water column, and can void warranty coverage. The OEM part drops in without modification.
Easy (1/5). Power down the furnace, disconnect the drain hoses, swap the trap, and reconnect. No special tools required — most homeowners complete this in under 15 minutes. Flush the trap with water before returning to service.