Lennox 73W33 Pressure Switch .68/.35 2-Stage

The Lennox 73W33 Pressure Switch 68/.35 2-Stage is an essential piece of equipment in HVAC systems to measure and control the pressure within the furnace to safe and effective limits. This pressure switch features two stages of operation with set points at.68 and.35 Inches of the water column ideal for high-efficiency furnaces. When the pressure is lower or higher than the set range, the switch interrupts the ignition sequence to prevent hazardous situations. The Lennox Pressure Switch enhances the reliability of the system to prevent its failure and also offers the required safety that personnel need to regulate airflow and other combustion processes.