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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube for the GKS90703BXAE high-efficiency gas furnace and related Goodman/Amana 90% AFUE models. Its longer 23-inch run connects components separated across the furnace cabinet — routing acidic condensate from the collector box or inducer to the drain trap and out to the drain line without pooling.
This genuine Goodman OEM hose is pre-cut to the exact 23-inch length the furnace layout requires. A generic tube cut too short or too long can kink, sag, or trap condensate, leading to overflow and pressure-switch faults. OEM guarantees the correct reach and fit.
Easy (1/5). Detach the old 23-inch hose from its barbed fittings, route the replacement along the same path, and clamp it without kinks. Shut off power and gas before servicing and check drainage after restart.