Lennox Pressure Switch

This Lennox pressure switch (also called a furnace pressure switch or air pressure switch) is a replacement part for Lennox gas furnaces. It monitors draft inducer airflow and pressure in the venting system. The switch confirms that the combustion system is venting properly before the furnace is allowed to continue its heating cycle.

Key Features:

• Monitors pressure from the draft inducer to help confirm proper venting
• Works as a safety device that interrupts the ignition or heating sequence if proper draft is not detected
• Two-stage designs are available for multi-stage furnaces
• Built as a replacement part to Lennox specifications

A working pressure switch helps your furnace start and run safely and reliably. Choose the variant that matches your furnace's part number.