Lennox 75M22 Dual Pressure Switch 0.50/.75 WC SPST

The Lennox 75M22 is a genuine OEM dual pressure switch designed for gas furnace applications. This high-altitude pressure switch monitors air pressure within the furnace venting system to ensure safe and efficient operation.

Key Features:

• Dual pressure settings: 0.50" and 0.75" water column (WC)
• SPST (Single Pole Single Throw) configuration for reliable on/off control
• Designed specifically for high altitude installations
• Genuine Lennox OEM part ensures proper fit and function
• Critical safety component that prevents furnace operation during airflow or combustion issues

This pressure switch is commonly used in Lennox G61MP series furnaces and acts as a crucial safety mechanism by monitoring air pressure in the venting system. It manages the unit's power by reacting to pressure changes, ensuring proper ventilation and combustion for safe, efficient heating. Also known by part number 75M2201.