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This factory-original OEM pressure switch assembly (with bracket) is the exact replacement specified for the Carrier PG8JAA036070ABJA gas furnace. The pressure switch is a critical safety component that monitors negative pressure created by the draft inducer motor. When the inducer successfully pulls the required vacuum, the switch closes and signals the control board to proceed with the ignition sequence. A failed or stuck-open pressure switch causes the furnace to lock out before ignition, leaving you with no heat — even though the inducer motor and gas valve may both be functioning perfectly. This assembly comes with the factory-spec mounting bracket for a true drop-in replacement with no field fabrication required.
Compatibility: Direct OEM replacement for Carrier model PG8JAA036070ABJA gas furnace. Always verify the W.C. rating stamped on your existing switch matches before ordering — pressure switch ratings vary by model variant and heat exchanger configuration. Our fitment team is available to confirm compatibility before you purchase.