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The Goodman 20201802 is a genuine OEM condensate drain hose tube for the GCH90704CXAB high-efficiency gas furnace. This flexible high-temperature tube routes acidic combustion condensate between the collector box, drain trap, and outlet. Brittle, cracked, or kinked hoses are a frequent cause of drip leaks and pressure-switch trip faults on condensing furnaces.
OEM tubing is cut to the correct length and inside diameter for a leak-free press fit on the factory barbs. Generic hose may be the wrong bore, slip off under condensate pressure, or degrade quickly against acidic condensate. The genuine part ensures a reliable seal.
Easy — Power off, slide the old hose off its barbed fittings, and press the new hose fully onto both connections. Under 15 minutes, no special tools required. Check for a snug fit and route the hose without kinks.