HVAC Technician

HVAC Technician – JLL

JLL is seeking a skilled and reliable HVAC Technician to join our facilities operations team in Hopkinton, MA. In this hands‑on role you will maintain, troubleshoot, repair, and optimize HVAC systems to ensure comfortable, efficient, and safe building environments for our clients and occupants. You will perform preventive maintenance, respond to service calls, diagnose system issues, and execute repairs on a wide range of heating, ventilation, and air‑conditioning equipment.

You will work as part of a collaborative facilities team supporting operational excellence and contributing to the reliability of critical building systems. This position allows you to apply your technical expertise, develop your skills across multiple systems, and grow your career within JLL’s leading facilities management platform.

The HVAC Technician performs scheduled preventive maintenance, troubleshooting and repair of HVAC equipment and supports building automation monitoring, emergency response, plumbing, electrical support, system optimization, safety compliance and documentation.

• Perform scheduled preventive maintenance on HVAC equipment including rooftop units, split systems, chillers, boilers, air handlers, fan coil units, VAV boxes, and related components
• Troubleshoot and diagnose HVAC system malfunctions using diagnostic tools, technical manuals, and systematic problem‑solving approaches
• Execute repairs on HVAC equipment including compressor replacement, refrigerant leak detection and repair, motor replacement, belt and filter changes, and control system adjustments
• Conduct seasonal HVAC system start‑ups and shutdowns, ensuring proper preparation and transition between heating and cooling modes
• Monitor building automation system (BAS) for HVAC alarms, performance anomalies, and efficiency opportunities, responding promptly to system alerts

• Complete assigned preventive maintenance work orders according to established schedules, procedures, and quality standards
• Inspect HVAC equipment regularly for signs of wear, damage, leaks, unusual noise, or performance degradation
• Clean or replace air filters, lubricate moving parts, check and adjust belts, verify proper refrigerant charge, and calibrate controls during routine maintenance activities
• Document all maintenance activities in the computerized maintenance management system (CMMS), recording findings, actions taken, parts used, and recommendations for follow‑up work
• Test safety controls, pressure relief devices, and operational safeguards to ensure proper function and compliance with safety standards

• Respond promptly to HVAC‑related service calls, comfort complaints, and emergency system failures
• Diagnose root causes of HVAC issues including inadequate heating or cooling, poor air distribution, excessive noise, water leaks, or control malfunctions
• Implement temporary solutions to restore comfort while planning and executing permanent repairs
• Communicate effectively with building occupants, property management, and facilities leadership regarding service issues, expected resolution times, and completed repairs
• Escalate complex technical issues or capital equipment failures to Chief Engineer or Facilities Manager with detailed diagnostic information and repair recommendations

• Assist with basic plumbing maintenance and repairs including fixture replacement, drain clearing, valve repairs, and water system troubleshooting
• Support electrical maintenance activities such as lighting repairs, outlet replacement, ballast changes, and basic circuit troubleshooting under appropriate supervision and within scope of qualifications
• Collaborate with specialized contractors or licensed professionals for complex plumbing or electrical work requiring advanced expertise or regulatory compliance

• Monitor HVAC system performance for opportunities to improve efficiency, reduce energy consumption, and enhance occupant comfort
• Adjust system setpoints, schedules,…