Key Benefits Direct OEM Compatibility: Ensures exact fit and specific gas flow rates for Laars heating units

Broad Compatibility: Fully compatible with Johnson Controls System 450

Built from 1/2 inch steel with a durable protective coating

OEM Reliability: Direct Daikin-McQuay replacement eliminates the mounting and calibration issues common with generic universal actuators

Laars Heating Systems R0023000 Limit Switch 321042-401 Key Benefits Direct OEM Compatibility:The Laars Heating Systems R0023000 Limit Switch is a critical safety component engineered to provide overheat protection for high performance hydronic and pool heating systems. This 150F high limit switch is calibrated to automatically interrupt the electrical circuit when internal water temperatures exceed the 150F threshold, effectively preventing thermal damage to the heat exchanger and downstream piping. As a veteran grade OEM replacement part,