Laars Heating Systems R0023000 Limit Switch 322055-301 The Reznor 258860 is a

The Reznor 258860 is a heavy-duty thermal expansion valve (TXV) kit engineered for precise refrigerant metering in commercial cooling applications

Genuine OEM Build: Specifically engineered for York S1-025-27747-012 specifications

hold the zero button

this HVAC circuit board features advanced integrated diagnostics to simplify troubleshooting for field technicians

Laars Heating Systems R0023000 Limit Switch 322055-301 The Reznor 258860 is aThe 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,