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The Goodman 20171701 is a genuine OEM condensate drain trap for the high-efficiency WGFM295070V4CAA gas furnace. On a condensing furnace, the trap carries acidic condensate away from the secondary heat exchanger and inducer while maintaining the pressure seal the system relies on. A cracked, clogged, or improperly seated trap is a leading cause of water leaks, blocked-drain lockouts, and pressure-switch faults — so a correct OEM replacement keeps the furnace draining and firing reliably.
The trap's port sizing and internal water-seal geometry are matched to this furnace's drainage layout and draft pressures. The genuine Goodman 20171701 fits the factory hose connections and maintains the correct seal. Generic traps may not align with the existing tubing or hold the proper water column, inviting leaks and nuisance faults. Choose OEM for a direct fit.
Moderate (2/5) — Power off and place a towel to catch residual water. Disconnect the condensate hoses, remove the old trap, prime the new trap with water, and reconnect all lines in their original positions. Verify free drainage before returning the furnace to service.