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The Goodman 20201802 is a genuine OEM condensate drain hose designed for the GKS90904CXAA high-efficiency gas furnace and compatible Goodman/Amana 90%+ models. This molded tube carries acidic condensate between the collector box, drain trap, and outlet without kinking or collapsing. Cracked, brittle, or disconnected hoses are a frequent source of water leaks and pressure-switch faults, making this an inexpensive but important maintenance part.
The OEM 20201802 is molded to the exact length and bend geometry of the GKS90904CXAA drain path. Generic hose cut to length can sag, trap water, or slip off the barbed fittings. Genuine tubing seats securely and keeps condensate flowing to the trap as designed.
Easy (1/5). Shut off the furnace, slide the old hose off its fittings, and press the replacement onto the same barbs. Confirm a snug fit and no low spots that could pool water. A quick 10-15 minute job requiring no tools.