The Lennox 12J46 is a high-quality negative pressure switch designed for precision and safety in HVAC systems. Rated at -1.00" WC, this component is engineered to monitor air pressure and ensure reliable operation of furnaces and other air handling units. When pressure levels fall outside the safe operating range, the 12J46 activates to shut down the system or signal for correction—helping to prevent equipment damage and maintain proper airflow.Key Features:

• Type: Negative Pressure Switch
• Pressure Rating: -1.00" WC
• Application: For use in Lennox furnaces and HVAC systems
• Ensures safe system shutdown in low-pressure conditions
• Factory-tested for dependable performance and compatibility

Ideal for service technicians and contractors, the 12J46 pressure switch is a direct replacement part approved by Lennox, supporting system longevity and safety compliance.Available now at Beenimax.com — trusted by HVAC professionals.