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The Goodman 20201902 is the OEM 23-inch condensate drain hose tube built as an exact replacement for the GMH950904CXAD 96% AFUE condensing gas furnace. This pre-cut length carries corrosive condensate from the collector box and inducer drain port to the furnace trap. Over time, factory hoses crack, harden, or clog with biofilm, leading to standing water, tripped pressure switches, and nuisance shutdowns. Installing the correct-length genuine tube keeps condensate flowing freely and protects the heat exchanger area from moisture damage.
The genuine 20201902 arrives at the exact factory length and bend radius, so it routes cleanly without kinks that restrict flow. Cheaper bulk tubing must be measured and cut on site and often lacks the same acid resistance, shortening service life. For a reliable, no-guesswork repair, OEM wins.
Easy (1/5). A 10–15 minute job. Cut power, release the clamps on the old hose, remove it, and slide the new 23-inch tube onto both fittings along the original route. Re-clamp, verify the trap is clear, and restart. No special tools required.