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The Goodman 20171701 Condensate Drain Trap is a genuine OEM assembly for the ACVC951155DXAA high-efficiency condensing gas furnace and compatible Goodman/Amana models. In a 95%+ AFUE furnace, the secondary heat exchanger pulls so much heat from the flue gas that water vapor condenses into acidic liquid. This trap collects that condensate, maintains a water seal that blocks flue gases from escaping into the cabinet, and routes drainage to your drain line.
The OEM trap matches the exact port locations, hose-barb sizes, and float/seal geometry your furnace's drain layout requires. Generic traps often force hose rerouting and can break the water seal, triggering pressure-switch lockouts or condensate overflow. Given that this part doubles as a combustion-safety seal, OEM fitment is strongly recommended.
Moderate. Expect 20–40 minutes: disconnect the condensate hoses, remove the old trap, prime the new trap with water to establish the seal, and reconnect. Power and gas off first. Clear any blockage in the drain line at the same time so the new trap doesn't immediately clog.