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The Goodman 20171701 Condensate Drain Trap is a genuine OEM replacement designed for the AMV90905DXBB high-efficiency (90%+ AFUE) condensing gas furnace and compatible Goodman/Amana models. In a condensing furnace, the secondary heat exchanger produces acidic condensate that must drain freely while the trap maintains a water seal to prevent flue gases from escaping through the drain line. A cracked, clogged, or brittle trap leads to water leaks, pressure-switch faults, and nuisance lockouts.
The OEM 20171701 is molded to match the exact port spacing, hose barb sizes, and internal geometry of the AMV90905DXBB drain system. Universal traps frequently require adapters, leak at mismatched fittings, or disrupt the pressure-switch reference, causing intermittent shutdowns. The genuine part drops in without modification for a clean, leak-free seal.
Rating: Easy. Power down the furnace, disconnect the inlet and outlet hoses (have a towel ready for residual condensate), unclip the old trap, and install the new one in the same orientation. Prime the trap with water to establish the seal before restarting. Estimated time: 15–20 minutes.
Prevent leaks and lockouts on your AMV90905DXBB with the exact condensate trap it was built around.