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The Goodman 20171701 is a genuine OEM condensate drain trap built for the Goodman GCV91155DXBB high-efficiency condensing gas furnace and compatible models. In a 90%+ AFUE furnace, combustion produces acidic condensate that must drain away continuously. This trap collects and channels that condensate to the drain line while its water seal blocks flue gases and inducer pressure from escaping through the drain — protecting both furnace operation and indoor air quality. A cracked, clogged, or brittle trap is a common cause of water leaks, pressure-switch faults, and nuisance shutdowns.
This genuine Goodman OEM trap matches the original port layout, seal height, and fittings, ensuring proper drainage and a correct pressure seal. Generic or shop-built traps often misalign ports or hold the wrong seal depth, leading to leaks or pressure-switch problems that are hard to diagnose.
Moderate — 3/5. Involves disconnecting condensate and pressure tubing, removing the old trap, and installing the new one with clean, correctly routed connections. Prime the trap with water before startup and verify free drainage plus a stable pressure switch on the first cycle.