Find & Apply For HVAC Mechanic / Installer Jobs in Barnhart, Missouri

CoolSys, a leader in sustainable, energy-efficient HVACR solutions, is seeking an HVAC/R Service Technician to join our HVAC Wholesale team. In this role, you will install, troubleshoot, repair, and maintain commercial and industrial HVAC/R systems, ensuring optimal performance and energy savings for clients across North America. You will diagnose system issues, perform preventive maintenance, and provide exceptional customer service on-site. At CoolSys, you'll work with innovative technology in a collaborative, inclusive culture that supports your growth, values diversity, and promotes safety, performance excellence, and work-life balance. Responsibilities Perform advanced troubleshooting, diagnostics, and repair of commercial and industrial HVAC/R systems, including refrigeration racks, split systems, RTUs, and controls. Conduct scheduled preventive maintenance to optimize system reliability, performance, and energy efficiency for commercial and industrial customers. Install, start up, and commission HVAC/R equipment and components in accordance with manufacturer specifications and Cool Sys standards. Identify root causes of system issues using gauges, meters, and advanced diagnostic tools, recommending effective corrective actions. Ensure all work complies with safety standards, EPA regulations, and local codes, maintaining clean and safe work areas on customer sites. Communicate clearly with customers regarding findings, recommended repairs, and system performance, building strong client relationships. Document work performed, parts used, and time on site using mobile work order systems, ensuring accurate and timely service records. Collaborate with the Technical & Maintenance team to share knowledge, support complex projects, and mentor less-experienced technicians as needed. Support energy-efficiency and sustainability initiatives by identifying opportunities for system upgrades, retrofits, and performance improvements. Participate in an on-call rotation for emergency service, demonstrating reliability, professionalism, and dedication to customer uptime. Required Skills Commercial HVAC/R troubleshooting Refrigeration systems diagnostics Electrical and control systems for HVAC/RReading blueprints and schematics Brazing, soldering, and piping practices Preventive and predictive maintenance Use of HVAC/R diagnostic tools and gauges Variable speed drives and controls (preferred) Energy efficiency best practices Customer service and communication Work order and mobile field service software Safety procedures and compliance (OSHA, EPA)