Ensure safe and efficient furnace operation with the Lennox 49L90 (49L9001) Pressure Switch. This genuine OEM component is engineered to monitor and control airflow within your HVAC system, helping prevent overheating and system failure. Designed for compatibility with select Lennox heating units, it activates or interrupts the electrical circuit based on detected pressure changes, ensuring proper venting and combustion.

Key Features:

Type: Air pressure switch

Ensures safe system startup by verifying proper airflow

Maintains reliable furnace operation and safety compliance

Factory-approved replacement for select Lennox furnaces

Whether you're performing a routine maintenance replacement or resolving a pressure fault code, the 49L90 pressure switch provides the quality and reliability expected from Lennox. Ideal for contractors and homeowners alike, it supports optimal system performance and safety.

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