HVAC Service Technician III

HTS•Dallas, TX

About The Position

The HVAC Service Technician III performs preventive maintenance, routine service calls, and repairs on commercial HVAC systems. The role includes diagnosing mechanical, electrical, and refrigerant failures across light through heavy commercial equipment, and servicing a range of assigned systems. Technicians may work under supervision at the entry level and independently as their experience grows.

Requirements

  • 4 to 7 years of HVAC service experience.
  • 3 to 5 years of experience on multistage, variable-speed, and VRF/VRV systems.
  • 5 years of electrical and controls work.

Responsibilities

  • Perform preventive maintenance on rooftop units and split systems, including filter changes, coil cleaning, belt replacement, and refrigerant level checks.
  • Complete routine service calls and minor repairs, working under supervision at the entry level and independently as experience grows.
  • Diagnose and repair mechanical, electrical, and refrigerant failures on light through heavy commercial HVAC equipment.
  • Service cooling towers, packaged units, air handlers, pumps, VAVs, and other assigned commercial equipment.
  • Conduct airflow diagnostics, duct balancing, and static-pressure testing.
  • Troubleshoot multistage, variable-speed, and VRF/VRV systems by interpreting wiring diagrams, low- and high-voltage circuits, and control logic.
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