Laars Heating Systems R0021901 Low Water Cut Out 320788-704 Avoid the reliability issues of

Avoid the reliability issues of universal "will-fit" rods and stick with the factory-spec component built for Model UDAP/UDAS performance

If the module is sending 120V to the igniter but no spark is generated

ensuring electromagnetic valve control remains stable even under continuous duty cycles

The York 025-41904-000 sensor is a precision 3000 ohm temperature sensor designed specifically for Johnson Controls and York HVAC systems

Laars Heating Systems R0021901 Low Water Cut Out 320788-704 Avoid the reliability issues ofThe Laars Heating Systems R0021901 Low Water Cut Out is a critical safety component designed for professional hydronic boiler maintenance and equipment protection. This LWCO safety device serves as the primary defense against dry fire conditions by monitoring real time fluid levels within the heat exchanger. When water levels drop below the required threshold, the low water cut out kit immediately interrupts the burner circuit, preventing catastrophic