




Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The Lennox 21L89 Control Limit Switch is designed to enhance the performance and reliability of Lennox HVAC systems. This switch operates within a temperature range of 210 to 240 degrees Fahrenheit.
This limit switch features a 3-insert design to provide precise airflow regulation and maintain optimal system performance. This control switch ensures reliable functionality and enhances the overall efficiency of HVAC systems.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!


