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The Goodman 20201902 is the factory-original 23-inch condensate drain hose tube for the GMH950904CXAG high-efficiency gas furnace. This length routes condensate from the collector box to the trap or field drain on condensing furnaces. Because the drain carries mildly acidic condensate, using correctly rated tubing protects the cabinet and prevents the water backups that trigger pressure-switch faults and shutdowns.
The genuine Goodman 20201902 is cut and formed to the exact 23-inch run specified for the GMH95 cabinet, so it reaches the trap without splices, strain, or sagging low spots. Generic bulk tubing forces you to guess the length and often uses a stiffer or thinner wall that kinks or weeps at the fittings. The OEM hose installs clean and drains reliably the first time.
Difficulty: Easy (1/5). Cut power to the furnace, pull the old hose off the barbs, empty any standing water, and press the new 23" hose fully onto both fittings. Route it with continuous downward slope to the drain — avoid loops or high spots that trap water. Prime the trap before restarting. Typical time: 10–15 minutes.
Ships with tracking and a fit guarantee for the listed model.