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

Optimized for R410A: Specifically calibrated for the pressure-temperature characteristics of high-efficiency R410A systems

Superior Sealing: The TFE-coated EPDM seat provides an airtight seal that prevents simmering and premature leakage at 15 PSIG

Professionals should refer to the original heater wiring diagram to ensure the safety limit is integrated correctly into the control string

Laars Heating Systems R0023000 Limit Switch 321042-401 OEM Reliability: Direct Daikin-McQuay replacementThe 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,