Pay in 4 interest-free payments of $9.69 Learn more
Ships within 48 hours · Estimated delivery Sep 11 - Sep 16
For contractors performing preventative maintenance or diagnosing lockout errors
providing a clear indication that the control relay is energized
High-Torque Performance: Provides the leverage required to break loose seated valve cages without rounding off internal hex or slot features
this limit switch serves as a primary safeguard by monitoring for restricted airflow or draft obstructions within the venting system
Lennox 21L89 Limit Switch For contractors performing preventative maintenanceThe Lennox 21L89 Limit Switch is a critical safety component designed for precise thermal regulation in Lennox HVAC systems. This auto limit switch features a 3 inch insert and is engineered to open the electrical circuit if the heat exchanger temperatures reach the 210F to 240F range. As a direct OEM replacement part, the 21L89 is identical to the 21L8901, ensuring a drop in fit for contractors maintaining residential furnaces and air handlers. This
US$ 150.00
US$ 225.00
US$ 250.00
US$ 250.00