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The Goodman 20201901 is a genuine OEM condensate drain hose tube for the GMV950453BXAB 96% AFUE two-stage variable-speed gas furnace. Pre-formed at the factory to the exact bend and length for its location in the drainage system, this hose carries acidic condensate away from the collector box and trap without kinks, sags, or air locks that would otherwise interrupt drainage.
The OEM Goodman hose matches the original barb sizes and pre-set geometry, so it seats fully and holds the correct drainage slope. Generic tubing cut to length risks the wrong pitch, loose fits, and leaks that trigger condensate backup and pressure-switch lockouts. Choose the exact-fit OEM part for trouble-free drainage.
Difficulty: Easy (1/5) — Typical time 10–15 minutes. Power off the furnace, slip the old hose off its barbs, seat the replacement fully on both fittings, and secure clamps. No special tools required. Confirm your model and serial before ordering.
Replacement part only. Follow all Goodman service instructions and local codes.