Established in 1945, Walker-J-Walker is a heating, air conditioning, ventilation, sheet metal work, piping and energy management company. It installs and maintains a range of mechanical equipment and systems. It offers technical support and indoor air quality monitoring services. Walker-J-Walker provides repair solutions for centrifugal, reciprocating and screw chillers. The company offers calibration and maintenance services for building automation and low- and medium-temperature refrigeration systems. In addition, it provides consulting services for chilled water cooling tower applications. Walker-J-Walker offers computerized fabrication and planned maintenance programs. The company serves the hospitality, transportation, commercial, manufacturing, entertainment, health care and retail industries. It is a part of EMCOR Group, which is one of the leading providers of mechanical and electrical construction services in the United States.