Bard HVAC 8406-086BX Pressure Switch The bimetal disc sensor provides

The bimetal disc sensor provides reliable automatic reset functionality

high-efficiency boilers

Eliminates External Venting: Specialized design allows for indoor regulator installation without venting to the building exterior

If this rollout switch opens

or a compressor that hums but fails to start

Bard HVAC 8406-086BX Pressure Switch The bimetal disc sensor providesThe 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