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The Goodman 20171701 is a genuine OEM condensate drain trap for the GMH950703BXAB and other Goodman/Amana 95%+ AFUE condensing furnaces. In high-efficiency furnaces, combustion produces acidic condensate that must drain safely away; this trap maintains the water seal that prevents flue gases from escaping through the drain line while allowing condensate to flow out. A cracked, clogged, or algae-fouled trap causes water leaks, pressure-switch faults, and nuisance lockouts.
The OEM trap matches Goodman's port sizing and mounting so it seals correctly against the inducer and drain routing. Universal traps often require adapters and can leak or trip the pressure switch. OEM is the reliable choice for condensing furnaces.
Moderate (3/5) — Involves disconnecting condensate tubing, removing the old trap, and priming the new trap with water. Clear the drain line and verify no leaks after install.