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The genuine Goodman 20171701 condensate drain trap collects and channels the acidic condensate produced by the secondary heat exchanger in your AMVC950905DXAC 95%+ AFUE furnace. Its molded trap geometry maintains a water seal that lets condensate drain freely while blocking flue gases from escaping through the drain line — a requirement for safe, code-compliant high-efficiency operation.
The trap's internal path and port spacing are matched to the AMVC cabinet routing. An OEM trap seats correctly against the existing hoses and heat-exchanger drain, avoiding the leaks and pressure-switch faults that come from adapting a universal trap. We recommend OEM for a true drop-in fit.
Power down the furnace, disconnect the condensate hoses, and remove the old trap — expect residual water. Clean any sludge from mating ports, install the new trap, reconnect hoses, and prime it with water to establish the seal before restart. Watch the first heat cycle for leaks and confirm no pressure-switch lockout.