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The Goodman 20171701 is a factory OEM condensate drain trap designed for the GCH90453BXAA high-efficiency gas furnace and compatible 90%+ AFUE Goodman/Amana models. This trap collects and channels acidic condensate away from the secondary heat exchanger and inducer assembly while maintaining a water seal that blocks flue gases from entering the cabinet. A cracked, clogged, or missing trap is one of the most common causes of a furnace locking out on a pressure-switch fault.
This is the genuine OEM component, machined to the exact port spacing and seal geometry Goodman engineered for this cabinet. Generic universal traps often require adapters and can leak at the inducer connection, causing nuisance pressure-switch trips. The OEM trap drops in without modification and preserves the factory water seal.
Easy (1/5). Power down the furnace, disconnect the drain hoses, remove the old trap, seat the new trap, reconnect the hoses, and prime with water. Typically a 15–20 minute job with no special tools.
Backed by our fit guarantee. Contact info@nationalhvacparts.com with your furnace serial number if you need help confirming compatibility.