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The Goodman A3468601 Pressure Switch Tubing is a genuine OEM 3/16" inside-diameter hose for the GMV80704BXA variable-speed gas furnace. This flexible high-temperature tube connects the pressure switch to the inducer draft port, carrying the negative-pressure signal that verifies proper combustion airflow before the burners light. Cracked, clogged, or brittle tubing is a leading cause of pressure-switch faults, lockouts, and intermittent no-heat operation — replacing it with the correct OEM hose restores reliable draft sensing.
The genuine Goodman OEM tubing is rated for the temperatures and flexibility this furnace requires, resisting the heat-hardening that causes generic hose to crack. Using the correct 3/16" ID ensures an airtight seal at both the switch and inducer ports for accurate pressure readings.
Easy (1/5). Slide the old tube off the barbed ports and press the new tubing on — no tools required. Route it clear of hot surfaces and confirm no kinks. Shut off gas and power before servicing.