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The Goodman A3468601 pressure switch tubing is a genuine OEM hose for the Amana/Goodman AMS80703ANAA furnace. This 3/16 inch ID silicone/rubber tube carries the negative-pressure signal from the inducer or collector box to the pressure switch, which proves proper venting before the control board allows ignition. Cracked, brittle, or blocked tubing causes a furnace that clicks but won't light.
The OEM tube is cut to Goodman's length and made from the correct heat-rated material so it won't collapse or degrade near the inducer. Generic tubing works if you match the ID and length, but low-grade hose can harden quickly. At this price, OEM is the easy call.
Easy (1/5) — pull off the old tube and push on the new one at both barbed ports. Cut power first, route the tube clear of hot surfaces, and confirm a snug fit. Under 5 minutes.