Pay in 4 interest-free payments of $13.37 Learn more
Ships within 48 hours · Estimated delivery Sep 21 - Sep 26
Provides a reliable 5" to 8
Integrated Diagnostics: simplifies the repair process by providing clear fault codes for faster field service
Can this switch be used in high-altitude environments
Rely on this 1
Lennox 78H74 Limit Switch 319825-402 Provides a reliable 5" toThe Lennox 78H74 is a critical OEM L185F limit switch designed for precision thermal protection in residential and commercial Lennox heating systems. As a primary safety control, this high limit switch monitors internal heat exchanger temperatures and is engineered to open the electrical circuit if the ambient temperature reaches the L185F set point. This rapid response prevents internal overheating and ensures the system operates within safe HVAC
US$ 159.00
US$ 38.50
US$ 194.00
US$ 332.50
US$ 245.00