Lennox 78M19 Supply Air Sensor R-448A Rugged Performance: Rated for high-pressure

Rugged Performance: Rated for high-pressure industrial cycles with a focus on stable operation and minimal friction

The bearing is typically pre-lubricated

Key Benefits: Precision Fit: Specifically machined for 3" V5013 mixing and diverting valves to ensure seamless integration

flexible heater tapes with appropriate wattage per lineal foot should be used instead

How do I verify it is time for a replacement

Lennox 78M19 Supply Air Sensor R-448A Rugged Performance: Rated for high-pressureThe Lennox 78M19 Supply Air Sensor (alternative part C0SNSR20AE1) is an essential component for maintaining precision discharge air control in high performance HVAC systems. Designed for integration with Lennox Prodigy Unit Controllers and CORE Control Systems, this supply static differential pressure sensor provides the critical feedback needed for Constant Air Volume Bypass (CAVB) and Variable Air Volume (VAV) applications. Whether you are servicing