The Lennox 26W40 (101126-01) is a factory-specified 2-stage pressure switch designed for accurate airflow and safety monitoring in compatible Lennox furnace systems. This dual-setpoint switch features High Stage at 0.60" W.C. and Low Stage at 0.35" W.C., ensuring proper inducer performance and dependable furnace operation. It is an essential OEM replacement part for restoring correct system pressure readings and maintaining manufacturer-approved performance.

 

Key Features:

• Genuine Lennox OEM 2-stage pressure switch
• High Stage set point: 0.60" W.C.
• Low Stage set point: 0.35" W.C.
• Ensures correct inducer and airflow operation
• Helps protect furnace from improper pressure conditions
• Direct-fit replacement for compatible Lennox models

 

Typical Applications:

Used in select Lennox high-efficiency furnaces requiring dual-stage pressure verification for safe burner operation.

 

Specifications:

• Part Number: 26W40
• Catalog Number: 101126-01
• Function: 2-Stage pressure switch
• High Set Point: 0.60" W.C.
• Low Set Point: 0.35" W.C.
• Electrical: Low-voltage control application
• Type: Furnace safety/airflow verification