Heatcraft Refrigeration 5521R Thermostat 318423-701 providing a direct drop-in solution

providing a direct drop-in solution that eliminates the need for field modifications or complex rewiring

Precise Calibration: Features pneumatic feedback for improved accuracy and stable proportional control

the ALPKT572-2 is specifically designed for Armstrong Air and compatible Allied Air brands

Always verify your specific Lochinvar part number before installation

Its robust motor windings are built to withstand the high ambient temperatures common in confined mechanical rooms and attic installations

Heatcraft Refrigeration 5521R Thermostat 318423-701 providing a direct drop-in solutionThe Heatcraft Refrigeration 5521R Thermostat is a high reliability 2 wire thermostat engineered specifically for the rigorous demands of commercial refrigeration and industrial HVAC systems. Designed as a direct replacement component for Heatcraft refrigeration systems, including brands like Bohn, Larkin, and Climate Control, this mechanical control provides precise temperature regulation across walk in coolers and freezers. Its robust construction