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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube for the Goodman GCH950453BXAC high-efficiency gas furnace and compatible models. This longer, pre-cut hose carries acidic condensate across the furnace cabinet — commonly from the collector box or secondary heat exchanger to the drain trap and out of the unit. The extra 23-inch length is designed for a specific factory routing, ensuring proper downward pitch so condensate drains freely instead of pooling. Aged, brittle, or cracked hoses cause leaks, water damage, and intermittent pressure-switch lockouts.
OEM (recommended): Exact 23-inch length, diameter, and formed bends for the original routing — no measuring or trimming required. Generic: Bulk tubing can be cut to length but risks incorrect pitch, kinks, and a less reliable seal.
Very Easy — 1 of 5. Power down the furnace, pull the old hose off its barbed fittings, route the new 23-inch hose along the same path, press it firmly onto each fitting, and confirm a continuous downward slope. About 10–15 minutes.