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The Goodman 20201802 Condensate Drain Hose Tube is a genuine OEM component for the GCH950703BXAB high-efficiency gas furnace. This flexible tube carries acidic condensate from the secondary heat exchanger and collector box to the drain trap and out to the drain line. Over time the factory hose can crack, harden, kink, or clog with biofilm — leading to water pooling inside the furnace, pressure-switch trips, and nuisance lockouts. Replacing it with the correct OEM tube restores reliable drainage.
The OEM 20201802 is pre-cut to length with the correct inside diameter to seal on this furnace's collector-box and trap fittings. Generic tubing must be sized and trimmed by hand and can slip or kink if the ID is off. The OEM tube is the fastest, leak-free choice.
Easy — slide off the old hose, push the new tube onto the fittings, and secure any clamps. No tools, gas, or electrical work required. Run the furnace and confirm condensate flows freely to the trap.