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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube for the WGFM195070S3BAD modulating 95% AFUE gas furnace. The pre-cut length routes condensate from the collector assembly to the drain trap with the correct slope, preventing pooling and backflow during condensing operation.
The 23-inch length matters: too short and the hose stretches over fittings, too long and it sags and traps water. Off-brand tubing forces you to guess and cut. This OEM 20201902 arrives at the exact factory length and durometer, so it seats cleanly and resists the acidic condensate that softens cheaper hose.
Easy (1/5). Power off the furnace, release the old hose at both ends, route the 23-inch replacement along the original path, and clamp. Prime the trap and verify a leak-free, downward-sloping run before restarting.
Direct-fit OEM replacement. Confirm the number 20201902 against your existing hose before ordering.