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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube engineered for the ACSH960904CXAA high-efficiency gas furnace. This flexible drain line routes condensate away from the secondary heat exchanger and collector box during normal operation, preventing water backup that can trip the pressure switch or cause nuisance lockouts. Using the factory-spec hose ensures a leak-free seal at every barb connection.
The genuine Goodman OEM hose is cut to the exact 23-inch length and inner diameter the ACSH960904CXAA was designed around, so it seats fully on the collector-box and drain-trap barbs without kinking. Generic universal tubing may require cutting, can be a slightly different bore, and risks loose connections or condensate leaks. For a furnace that depends on proper drainage to stay out of safety lockout, the OEM part is the reliable choice.
Easy (1/5). Slide the hose onto the drain barbs, secure any spring clamps, and confirm a downhill slope to the trap. Most homeowners and technicians complete this in under 10 minutes with no special tools. Always shut off power and gas before servicing.