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The Goodman 20171701 is an OEM condensate drain trap for the AMVC950905DXBA 96% AFUE variable-speed furnace. In a high-efficiency furnace, combustion produces acidic condensate that must drain away while the trap's water seal blocks flue gases from escaping back into the cabinet. A cracked or clogged trap causes water leaks, pressure-switch faults, and nuisance lockouts — making this an essential wear part for condensing furnaces.
The OEM trap matches the exact port spacing and internal geometry of the AMVC cabinet, so it seats without adapters and maintains the correct water seal. Generic traps often require modification and can leak flue gas if the seal height is wrong.
Moderate (2.5/5) — disconnect drain hoses, clear old debris, seat and prime the new trap with water, then confirm proper drainage and no leaks on startup.