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The Goodman A3468601 Pressure Switch Tubing is genuine OEM 3/16" ID draft-sensing hose for the Amana / Goodman AMH81405DXCC gas furnace. This flexible tube connects the inducer/vent tap to the pressure switch, transmitting the negative pressure signal that proves proper draft before the burners fire. Cracked, brittle, or clogged tubing is a frequent cause of pressure-switch lockouts and no-heat faults.
OEM vs. Generic: The OEM tubing uses the correct 3/16" bore and heat-resistant compound sized to seal on the factory barbs without kinking. Generic tubing of the wrong ID or wall thickness can leak the pressure signal or collapse over the switch nipple, defeating the safety proof. OEM ensures an airtight sensing path.
Install Difficulty: Easy — cut to length, press onto the barbed fittings at the inducer tap and pressure switch. No tools required beyond a knife or scissors.