Specializing in HVAC and refrigeration control systems.  We are dedicated to providing our customers with reliable products and promoting quality designs from the beginning to the end.

Refrigerant Gas Monitoring Systems

Sherlock Series Monitoring Systems

With Temperature Control System

Portable Gas Monitor

Refrigeration Control Systems

Compressor Controls

Condenser Controls

Room and Wizard Evaporator Control Systems

Clark Johnson Company, Inc.       2018®