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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube engineered for the AMH951155DXAC high-efficiency gas furnace and compatible Goodman/Amana models. In a 95%+ AFUE furnace, the secondary heat exchanger produces acidic condensate that must be routed reliably to the drain trap and outlet. This factory hose carries that condensate at the exact length and bend radius the cabinet was designed for, preventing kinks, sagging, and standing water that can trigger nuisance lockouts.
Generic bulk tubing is often the wrong durometer or diameter, which leads to slip-offs at the barbed fittings and leaks inside the cabinet. This OEM hose is pre-cut to spec and rated for continuous condensate exposure, so it seats securely and holds up against corrosion over the furnace's life. Choosing the factory part protects the heat exchanger and blower assembly from moisture damage.
Easy (1/5) — Typically a 10–15 minute job. Power down the furnace, disconnect the old hose from the trap and drain fittings, slide the new hose on, and verify a snug fit. No special tools required beyond pliers. Always confirm proper drainage and check for leaks after restarting.