Founded in 1935, Murphy & Miller is a service, maintenance, and design and build contractor of heating, ventilation and air conditioning systems in Chicago. It is a full-service source for design and installation, sheet metal fabrication, custom piping, filtering and complete system service and maintenance. The company offers installation of computer room systems, refrigeration systems, boilers and burners, pumps, humidifiers, air handlers and exhaust fans. Its services include coil cleaning, testing and repair, refrigerant recovery, chiller retubing and vibration analysis. It identifies areas of inefficiency in environmental control and process heating and cooling through on-site surveys. It also provides energy control, cost efficiency and maintenance stability of products.