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The Goodman A3468601 Pressure Switch Tubing is genuine OEM 3/16-inch inner-diameter hose used to connect the draft-inducer pressure tap to the pressure switch on Goodman AMS81405DNA gas furnaces and compatible models. Over time this tubing hardens, cracks, or collapses, causing the pressure switch to read incorrectly and locking out the furnace on ignition. Fresh OEM tubing restores an accurate pressure signal.
This genuine Goodman OEM tubing is rated for the sustained heat and vibration near the inducer housing, keeping a tight, leak-free seal on the switch and tap barbs. Generic vinyl tubing can soften, kink, or blow off under heat, producing intermittent no-heat faults that are hard to diagnose. OEM silicone is the reliable choice.
Easy (1/5). Power down the furnace, pull the old hose off both barbs, and press the new tubing on, trimming to match the original run. Under 10 minutes with no tools. Ensure the tubing routes without kinks or low spots that trap condensate.