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The Goodman 20171701 Condensate Drain Trap is a genuine OEM replacement for Goodman GKS90704CXAE high-efficiency (90%+) gas furnaces. In a condensing furnace, the drain trap safely routes acidic condensate away from the collector box while sealing against flue-gas escape. A cracked, clogged, or dried-out trap leads to water leaks, pressure-switch faults, and lockout codes — making this a key part for restoring reliable operation.
This genuine Goodman OEM trap matches the factory port geometry and sealing surfaces exactly, so it mates cleanly with the collector box and drain hoses. Universal or generic traps often require adapters and can leak or trip the pressure switch if the internal water column height is wrong. For a condensing furnace, OEM is the safe choice.
Moderate (2–3 of 5). Requires disconnecting condensate hoses and clearing the drain path. Prime the new trap with water before startup so the pressure switch reads correctly. Shut off power before servicing; a licensed technician is recommended if you're unfamiliar with condensate routing.
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