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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube engineered for the ACV90905DXBA high-efficiency condensing gas furnace. In a 90%+ AFUE furnace, the secondary heat exchanger and inducer assembly produce acidic condensate that must drain cleanly — a cracked, brittle, or clogged drain hose is one of the most common causes of nuisance lockouts, water leaks, and pressure-switch faults. Replacing it with the correct factory-spec tube restores proper drainage and protects surrounding components from water damage.
This genuine OEM Goodman hose is cut to the exact length and diameter the ACV90905DXBA was designed around, ensuring leak-free connections at both fittings. Generic universal tubing often requires field trimming, can kink at factory routing bends, and may not be rated for the low pH of condensing-furnace condensate, leading to premature failure. For a critical drainage path, the OEM part is the reliable choice.
Easy (1/5) — Typically a slip-on hose replacement secured with clamps. Turn off power and gas, disconnect the old hose, route the new tube along the same path, and reattach the clamps. Most homeowners with basic tools can complete this in 10–15 minutes.