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or a compressor that hums but fails to start
The bimetal disc sensor provides reliable automatic reset functionality
ensuring precise open on rise switch action to prevent heat exchanger damage or unsafe operating conditions
High Pressure Rating: UL-approved for up to 667 psig
It is compatible with standard and slow opening valves but cannot be used with step-opening regulators
Bard HVAC 8406-086BX Pressure Switch or a compressor that humsThe Bard 8406 086BX Pressure Switch is a critical safety and performance component designed for specific air proving applications within Bard wall mount units and HVAC systems. This 0. 35" WC SPDT pressure switch functions as a differential air pressure sensor, ensuring proper blower operation and venting before allowing the ignition sequence or cooling cycle to proceed. It is a direct factory replacement and is electrically and mechanically identical
