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The Goodman 20171701 Drain Trap is a genuine OEM condensate trap assembly for the Amana AMH951155DXAD 95%+ AFUE gas furnace. High-efficiency furnaces produce acidic condensate, and this trap channels that water safely to the drain while its P-trap design blocks combustion (flue) gases from being pulled back through the drain line by the inducer.
The OEM 20171701 is molded to match the furnace's collector-box ports and inducer draw exactly, so the trap primes correctly and seals against negative pressure. Generic traps often have mismatched port spacing or a shallow trap depth, leading to gurgling, pressure-switch faults, or condensate overflow. Because a mis-fit trap can trigger repeat lockouts, we recommend OEM here.
Moderate (3/5). Power down the furnace, disconnect the condensate tubing, remove the old trap, and transfer the hoses to the new unit in the correct positions. Prime the trap with water before restarting so the pressure switches read correctly. Plan on 20–30 minutes.
After install, run the furnace through a full heat cycle and check for leaks. Questions on routing? info@nationalhvacparts.com.