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The Goodman 20201901 Condensate Drain Hose Tube is the genuine OEM drain line routing tube used on the GMH950703BXAD 96% AFUE two-stage gas furnace. In a high-efficiency condensing furnace, the secondary heat exchanger and inducer produce acidic condensate that must be carried away reliably. This factory tube is molded to the exact bend radius and length the cabinet requires, so it seats without kinking, leaking, or blocking flow.
A generic tube may be close on diameter but wrong on length or bend, forcing sags that trap condensate and trip the pressure switch on cold mornings. This OEM part matches the original routing exactly and protects your furnace's factory warranty. Choose the genuine tube when correct drainage and a clean install matter.
Easy (1/5). Most homeowners can swap this in minutes with the furnace powered off — release the clamp or fitting, remove the old tube, and press the new one on. Always shut off power and gas before servicing, and verify the drain slopes continuously toward the trap.
Ordering the exact factory part removes the guesswork. If you are unsure of fitment for your serial range, contact us at info@nationalhvacparts.com before you buy.