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The Goodman 20201802 condensate drain hose tube is a factory-original part for the GKS90905DXAA high-efficiency gas furnace. This molded hose routes acidic condensate between the collector box, drain trap, and outlet within the furnace's condensate system. Its pre-formed length and bend radius ensure a downhill, kink-free path so water drains completely and does not back up into the pressure-switch circuit.
This genuine Goodman OEM hose is molded to the exact length, diameter, and bend the GKS90905DXAA requires. Generic bulk tubing must be cut to guess length and can kink or sag, creating low spots where condensate pools and freezes or triggers nuisance pressure faults. The correct pre-formed part installs cleanly and drains reliably.
Easy (1/5). Under 10 minutes. Power down, catch any residual water, slide the old hose off both barbed ports, and press the replacement onto the same connections following the original routing. Confirm there are no kinks and that the run slopes continuously downward.
Disconnect power before servicing. Condensate is mildly acidic — wipe up spills promptly.