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The Goodman 20201901 Condensate Drain Hose Tube is a genuine OEM tubing section for the Goodman GMH950904CXAF 95% AFUE condensing furnace and compatible GMH95 series units. It carries acidic condensate between the secondary heat exchanger, collector box, drain trap, and outlet during high-efficiency operation. Because the condensate is corrosive, this hose is made from the correct chemically-resistant material and cut to the exact length and diameter the furnace's routing requires.
Generic hardware-store tubing often has the wrong inside diameter, slips off barbed fittings, or degrades against acidic condensate — leading to leaks, water damage, and pressure-switch faults. This factory-original hose matches the GMH950904CXAF's fitting sizes and bend radius for a secure, leak-free connection.
Power down the furnace, pull the old hose off its barbed fittings, and press the new tube firmly into place — routing it with the same bends so it drains downhill without kinks. Prime the trap afterward and check for leaks through a full cycle. A quick, tool-free replacement for most homeowners.
Genuine Goodman OEM drain hose — correct fit and material for the GMH950904CXAF.