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The Goodman 0161F00046 is a genuine OEM condensate drain trap engineered for the AMSS921005CNAB high-efficiency gas furnace and compatible Goodman/Amana models. In a condensing furnace, the drain trap safely routes acidic condensate away from the secondary heat exchanger and inducer assembly while maintaining a water seal that blocks flue gases from escaping into the cabinet. A cracked, clogged, or missing trap is one of the most common causes of nuisance lockouts, pressure-switch faults, and water leaks under the unit.
This is the factory OEM trap — it matches original port spacing, seal depth, and inlet/outlet orientation exactly, so it drops in without adapters. Generic universal traps are cheaper but often require re-plumbing the condensate line and can seat improperly, leading to recurring pressure-switch trips. For a reliable, warranty-safe repair we recommend the OEM part.
Easy (1/5) — Typically a 10–15 minute swap. Power down the furnace, disconnect the condensate hoses, remove the old trap, install and re-clamp the new one, then fill the trap with water before restarting.