3" HIGH LIMIT SWITCH L180-40F 3 High Limit Control Switches
+5% Tax • Shipping calculated at checkout.
U.S. Duties/Taxes, if applicable, may be due at time of delivery.
Pickup available at 75 Blue Mountain St #3
Usually ready in 24 hours
Not sure this fits your furnace? Call us — we're happy to help
Ensure the safety and efficiency of your heating system with this 3-inch high limit switch. Designed as a critical thermal safety control, this component monitors the temperature within your furnace or HVAC unit to prevent overheating. The L180-40F switch acts as a vital failsafe, automatically opening the electrical circuit to shut down the heating cycle if the internal air temperature reaches a limit of 180 degrees Fahrenheit. Once the system cools down by 40 degrees to a safe reset temperature of 140 degrees Fahrenheit, the switch closes to allow normal operation to resume. This reliable replacement limit control is essential for protecting the heat exchanger and ensuring the longevity of residential and commercial forced-air systems.
Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.
1-778-759-9864Mon–Sat 8AM–9PM PST · Or email parts@bcfurnace.com
Compatible parts and related replacements
Looking for more 3 Limit Switches?
