Johnson Controls - - Responsibilities: Perform maintenance, repair and replacement services on commercial heating and cooling systems and recommend solutions to ensure facilities are running efficiently; Identify enhancements that will provide customer systems reliability and sustainability at the time of service; Provide labor and material quotes to support your recommendations; Participate in weekend, night, and holiday call out service on a rotating basis; Assist Journeymen in the repair and service of centrifugal, absorption, screw and scroll chillers