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This is the factory OEM pressure switch with mounting bracket (part number HK06WC090) for the Carrier GB3AAV036095ADJA gas furnace. The pressure switch is a critical safety device that monitors negative pressure created by the inducer draft motor to confirm proper venting before allowing the ignition sequence to proceed. When this switch fails — whether it sticks open, sticks closed, or develops a cracked diaphragm — the furnace will lock out prior to ignition, leaving you with no heat. Common symptoms include a blinking fault code for "pressure switch open" or repeated failed ignition attempts with the inducer running normally.
Compatibility: Engineered specifically for the Carrier GB3AAV036095ADJA gas furnace. Always cross-reference the W.C. rating stamped on your existing switch and confirm part number HK06WC090 against your unit's data plate before ordering. Our HVAC parts specialists are available to verify fitment — order with confidence and get your heat back today.