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The Carrier HK06WC058 pressure switch is the genuine OEM safety control that verifies proper draft on your GB1AAV036065AFJA gas furnace before the burners are allowed to fire. It senses negative pressure created by the inducer motor and closes its contacts to confirm the vent path is clear; if the switch detects a blocked flue, condensate-clogged tube, or weak inducer, it keeps the gas valve closed to prevent dangerous operation. A stuck or failed switch commonly causes a furnace that runs the inducer but never lights, often with a pressure-switch fault code. This exact-fit replacement restores correct pressure setpoint and reliable ignition. Installation is straightforward, about 15 minutes: cut power, slip off the rubber hose, remove two screws and the spade terminals, then mount the new switch in the same position. This is an authentic Carrier OEM pressure switch calibrated to your furnace, not a generic equivalent. In stock and shipping same-day on orders placed before 3PM CST.
This part is compatible with Carrier model GB1AAV036065AFJA.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.