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The Goodman 20201802 is a genuine OEM condensate drain hose/tube shaped for the AMVM960603BXAA high-efficiency modulating gas furnace. It carries acidic condensate between the collector box, drain trap, and outlet along the factory routing path. Because it is pre-formed to the correct length and bend radius, it avoids the kinks, sags, and low spots that trap water and trigger pressure-switch faults or overflow leaks.
Generic hose cut from bulk stock lacks the molded bends of the original, so it can collapse at tight turns or create water-holding low spots. The OEM 20201802 matches Goodman's exact profile and inside diameter, dropping into place without trimming and keeping condensate flowing freely.
Easy (1 of 5). A slip-on hose swap that takes just a few minutes — release the clamps, transfer the new tube, and re-secure. Cut power to the furnace before service and clear any standing condensate. Route the hose with continuous downward slope to prevent airlocks.
Genuine OEM part, fit guaranteed, and fast shipping from NationalHVACParts.com.