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The Goodman A3468601 is a 3/16-inch inside-diameter pressure switch tubing hose engineered for the ADV80703BXBA gas furnace and other compatible Goodman/Amana models. This flexible hose connects the inducer draft port to the furnace pressure switch, carrying the negative-pressure signal that verifies proper venting before the ignition sequence begins. A cracked, brittle, or disconnected hose is one of the most common causes of a furnace that clicks but won't light.
The genuine Goodman OEM hose is cut to the correct length and rated for the temperature and vacuum conditions inside the burner compartment. Generic aftermarket tubing is lower cost but may harden or collapse under heat, leading to intermittent pressure-switch lockouts. For a nuisance-free repair, most technicians prefer the exact OEM replacement on a safety-critical circuit like this one.
Easy (1/5). Power down the furnace, slide the old hose off both barbed fittings, and press the new tubing fully onto each port. No tools or special skills required — a typical replacement takes under five minutes. Always confirm the furnace fires and the pressure switch closes before closing the cabinet.