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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube for the GCH90453BXAA gas furnace and compatible 90%+ AFUE models. This longer run of high-temperature tubing carries acidic condensate across the cabinet from the collector box or trap to the drain outlet. The pre-cut 23-inch length is sized specifically for this furnace's internal routing, so it reaches its fittings without splicing or excess slack that could sag and trap water.
Length matters on this run. The OEM 20201902 is cut to exactly 23 inches with the correct inner diameter for a sealed slip fit on the factory barbs. Generic bulk tubing must be measured and trimmed, and an incorrect length can sag into a low spot, hold condensate, and cause pressure-switch trips. The OEM hose installs to spec every time.
Easy (1/5). Power down, remove the old 23" hose from its barbed connections, route the new hose along the same path, and press it fully onto both fittings. Confirm no kinks or low spots, then prime with water. Roughly 10 minutes, no tools.
Confirm fitment anytime at info@nationalhvacparts.com.