Bard HVAC 8406-086BX Pressure Switch High Pressure Rating: UL-approved for

High Pressure Rating: UL-approved for up to 667 psig

A higher voltage rating provides a larger safety margin against voltage spikes

Why choose OEM over generic springs

ensuring precise open on rise switch action to prevent heat exchanger damage or unsafe operating conditions

Bard HVAC 8406-086BX Pressure Switch High Pressure Rating: UL-approved forThe 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