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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube designed for the AMVC950704CXBA variable-capacity gas furnace and compatible Goodman/Amana high-efficiency models. Its pre-cut length spans the longer drain run found in specific cabinet configurations, delivering condensate from the collector box to the trap without kinks or sag.
The 23-inch OEM length is matched to Goodman's factory drain routing, so it reaches the trap with the correct slope for reliable gravity drainage. Generic hose cut to an approximate length can sag mid-span, trapping water and causing intermittent pressure-switch faults. The genuine 20201902 avoids this guesswork.
A quick DIY swap (5–10 minutes). Turn off furnace power, remove the old tube from each barbed fitting, seat the new 23-inch hose fully on both ends, and confirm a continuous downward slope to the trap. No tools required.
Compatibility note: Verify your furnace model and drain routing before ordering. Contact info@nationalhvacparts.com with questions.