Differential Vacuum Pressure Switch Sensor Replaces Harman Heatilator 3-20-6866

The Differential Vacuum Pressure Switch Sensor is designed to monitor and control vacuum pressure in heating systems. It helps ensure efficient operation by detecting pressure differences and triggering necessary responses.

• Replaces Harman Heatilator 3-20-6866
• Monitors differential vacuum pressure for reliable system performance
• Compatible with various heating units requiring this sensor type
• Easy to install as an aftermarket replacement part

This item is an aftermarket part, not OEM. Compatibility may vary depending on the machine's serial number. Please verify fitment before purchase.