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The Goodman 20201802 is a factory OEM condensate drain hose tube for the WGFM195115S5DAD high-efficiency gas furnace and compatible Goodman/Amana condensing models. This flexible tube routes acidic condensate from the collector box and drain trap to the drain, and it is molded to the exact length and bend the furnace cabinet requires. Cracked, brittle, or kinked hoses cause slow drips, water-level faults, and pressure-switch lockouts.
The OEM 20201802 is pre-cut and shaped to route cleanly inside the tight furnace cabinet without kinking. Generic bulk tubing must be cut and often kinks at bends, restricting flow. For a leak-free, drip-free path, the factory tube is the reliable pick.
Very Easy (1/5). Slip-off / slip-on with hose clamps — usually under 10 minutes. Cut power and gas before servicing.