Bard HVAC 8406-086BX Pressure Switch but cross-referencing with the unit's

but cross-referencing with the unit's manual is recommended

The assembly includes the spring

When resolving issues with furnace burner replacement

Replacement is necessary if the furnace fan fails to start after the burner has ignited and reached temperature

and 277V AC applications at 22 Amps

Bard HVAC 8406-086BX Pressure Switch but cross-referencing with the unit'sThe 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