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The Goodman 20171701 Condensate Drain Trap is the genuine OEM trap assembly for the ACVC90704CXAA 96% AFUE condensing gas furnace. High-efficiency furnaces produce acidic condensate from the secondary heat exchanger, and this trap routes that water to the drain while sealing the system against flue-gas leakage. A cracked, clogged, or aged trap is a frequent source of water leaks, pressure-switch lockouts, and nuisance error codes.
The OEM Goodman trap is molded to the exact port spacing and inlet/outlet geometry of the furnace cabinet, so it seats correctly and seals the first time. Generic universal traps exist at a lower price but often require adapters and extra tubing, and a poor seal on a condensing furnace can trigger pressure-switch faults. For correct fit, the OEM part is the safe choice.
Moderate (2/5). Requires disconnecting condensate tubing, removing the old trap, and reconnecting with proper seals. Flush the trap and check for blockage during install. Budget 20–30 minutes; have a towel ready for residual condensate.