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The Goodman 20201901 Condensate Drain Hose Tube is a genuine OEM component for the GKS91155DXAC and other high-efficiency Goodman and Amana gas furnaces. This molded tube channels corrosive condensate between the collector box, drain trap, and outlet, following a specific bend profile so it seats securely without kinks or sags. When the original hose becomes brittle, cracked, or clogged with scale, the furnace can leak water, trip its pressure switch, and lock out on a no-heat fault.
The OEM tube is pre-formed to the exact length, diameter, and geometry of your furnace's drain circuit, guaranteeing a tight, leak-free fit on the factory barbs. Generic tubing cut from a roll tends to kink at bends and pop loose under inducer pressure, causing repeat service calls. OEM keeps drainage reliable and preserves warranty coverage.
Rated Easy, roughly 10–15 minutes. Shut off power to the furnace, photograph the current hose routing, remove the old tube from both barbed connections, and firmly seat the replacement in the same path. Verify unobstructed condensate flow and confirm the pressure switch closes normally on the next cycle. Best handled by a qualified HVAC technician.