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This genuine OEM Goodman A3468601 pressure switch tubing is the exact silicone hose used on the AMH80904BXCB gas furnace to connect the inducer/collector box to the pressure (draft) switch. When this small hose cracks, hardens, or clogs with condensate, the furnace can throw a pressure-switch fault and refuse to fire — replacing the tubing is one of the fastest, cheapest fixes for that no-heat condition.
Our genuine Goodman tubing is molded from heat- and condensate-resistant silicone that holds its bore diameter across thousands of heating cycles. Generic vinyl replacements are cheaper up front but stiffen, kink, and split near the inducer heat, leading to intermittent pressure-switch lockouts. For a reliable, code-correct repair we recommend the OEM part.
Easy (DIY-friendly, 5–10 minutes). Cut power at the furnace switch, slide the old hose off both barbs, route the new length the same way, and press it firmly onto each fitting. No tools or programming required.