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The Goodman 20171701 is a factory OEM condensate drain trap designed for the GMH950904CXAD 96% AFUE condensing gas furnace. High-efficiency furnaces pull heat out of the flue gas until water vapor condenses, and that acidic condensate must drain away through a properly sealed trap. This trap channels condensate to the drain line while maintaining a water seal that blocks flue gases from escaping into the cabinet.
A cracked, clogged, or brittle drain trap causes water leaks, a tripped pressure switch, or a furnace that won't stay lit. Replacing it with the correct OEM component restores reliable drainage and a proper flue-gas seal.
The OEM trap matches the exact port locations, orientation, and seal geometry of your furnace. Universal traps often require re-plumbing and may not seat correctly against the collector box, leading to leaks. OEM is the reliable fit-and-forget choice.
Easy to Moderate — the trap connects via slip fittings and hose clamps. Flush the trap and drain line, prime it with water before startup, and check for leaks. A DIY-capable homeowner can handle this, though a technician is recommended if the pressure switch was affected.
Shut off power before servicing.