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The genuine Goodman 20201902 23-Inch Condensate Drain Hose Tube carries condensate from the collector box and secondary heat exchanger of your GCH91155DXAC gas furnace to the drain assembly. Its pre-cut 23-inch length matches the factory routing, so it clears internal components without kinking — a common cause of condensate backup, pressure-switch faults, and error lockouts.
Cutting a length of universal tubing rarely matches the OEM inner diameter or wall thickness, and the wrong hose can slip off a barb or restrict flow. This factory 23-inch tube is sized and shaped for the exact run inside the GCH91 cabinet, ensuring a slip-free, leak-free connection and continued warranty coverage.
Easy (1/5). Cut power to the furnace, pull the old hose off both fittings, and push the new tube onto the same barbs following the original path. No tools needed. Check for a continuous downhill slope and inspect for leaks during the first cycle. When in doubt, use a licensed HVAC technician.