Lennox 24W97 Pressure Switch 0.40" WC HVAC Furnace Safety Control

The Lennox 24W97 is a genuine OEM pressure switch designed for Lennox furnaces and HVAC systems. This critical safety component monitors the pressure differential in the furnace's venting system to ensure proper airflow and safe operation.

Key Features:

• Pressure setting: 0.40 inches water column (WC)
• Genuine Lennox OEM replacement part
• Also known by OEM number 101231-01
• Ensures proper draft and combustion air pressure
• Safety switch prevents furnace operation if pressure conditions are unsafe
• Direct replacement for original equipment

This pressure switch is a vital safety control that detects negative pressure in the furnace's inducer blower system. When proper pressure is achieved, the switch closes to allow the ignition sequence to proceed. If inadequate pressure is detected due to blockage, improper venting, or inducer motor failure, the switch remains open and prevents furnace operation, protecting against potential safety hazards.