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The Goodman 20171701 is a genuine OEM condensate drain trap engineered for the ACV90905DXBB high-efficiency furnace. This trap maintains a water seal that allows acidic condensate to drain away while blocking combustion gases and pressure from escaping or backing up into the furnace. A cracked or clogged trap triggers pressure-switch faults and lockouts, so a correct-fitting OEM replacement is key to reliable heating.
This trap is shaped to fit the ACV90905DXBB's specific drain ports and pressure-switch tubing. The genuine OEM 20171701 guarantees the correct port spacing and seal depth; a universal trap may not align, leading to leaks or false pressure-switch trips. For trouble-free operation, choose the OEM trap.
Moderate — DIY capable. Disconnect power, detach the drain hoses and pressure tubing, swap the trap, and reconnect. Prime the new trap with water before startup and confirm there are no leaks or pressure faults. Basic hand tools are sufficient.