Description
Bard HVAC OEM Differential Pressure Switch
The Bard HVAC 8406-100BX is a genuine OEM differential pressure switch engineered specifically for use in Bard HVAC equipment. Designed to monitor and respond to pressure differentials within the system, this switch helps protect critical components by verifying proper airflow and pressure conditions before allowing operation to proceed.
Key Features
- Genuine Bard HVAC OEM replacement part
- Differential pressure set point: 0.73″ W.C. (water column)
- Monitors pressure differential to confirm adequate airflow
- Helps prevent equipment damage caused by restricted or insufficient airflow
- Direct drop-in replacement for compatible Bard HVAC units
- Built for reliable, long-term performance in demanding HVAC applications
Application
This differential pressure switch is a critical safety and control component commonly found in Bard wall-mount and packaged HVAC systems. It senses the pressure difference across a filter, coil, or blower section and opens or closes a circuit based on whether the measured differential meets the required threshold. This ensures the system operates only under safe, design-specified conditions.
Why Choose OEM Parts?
Using genuine Bard HVAC replacement parts like the 8406-100BX ensures proper fit, function, and system reliability. OEM components are manufactured to the same specifications as the original parts, helping maintain equipment warranties and peak system performance.







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