Service Chiller Technician - HVAC

HTS Engineering Ltd.; Houston (TX); On-site; USD 42,000 - 64,000; Full time

Job summary

HTS Engineering Ltd. in Houston, TX seeks an HVAC Field Service Technician to diagnose, repair, and maintain a wide range of commercial/industrial systems at customer sites.

You will handle unitary and packaged equipment, boilers, and chillers, performing preventive maintenance and on-site diagnostics to ensure optimal performance. The role requires strong hands-on troubleshooting, ability to work on high-capacity systems, and clear communication with customers.

Qualifications

• Experience diagnosing and repairing commercial/industrial HVAC equipment.
• Ability to perform preventative maintenance per manufacturer specs.
• Strong troubleshooting and diagnosticSkills for HVAC systems.

Responsibilities

• Respond to dispatched service calls at customer sites to diagnose, troubleshoot, repair, and perform preventative maintenance on HVAC equipment.
• Service includes unitary and packaged systems from small minisplits to large rooftop units; troubleshoot VFDs, controls, and compressors; perform maintenance and replacements.
• Boilers: perform combustion analysis, troubleshoot flow issues, repair components, and verify proper operation.
• Chillers: diagnose and repair compressor, motor, starter issues; perform leak detection and teardowns; troubleshoot water flow and controls in chiller plants.
• Control valves and related components: diagnose and repair signal, actuator, and control issues.
• Heat exchangers and cooling towers: identify deficiencies, troubleshoot flow, perform cleanings, gasket replacements, and reassembly.

Skills

HVAC field service

Troubleshooting

Preventative maintenance

Diagnostics and repair

Customer communication

Tools

Combustion analyzer

Megger tester

VFD troubleshooting tools

Job description

Key Responsibilities / Job Duties

• Respond to dispatched service calls at customer sites to diagnose, troubleshoot, repair, and perform preventative maintenance on a wide range of commercial/industrial HVAC equipment, including but not limited to:
  • Unitary and Packaged Systems — From small mini-splits to large rooftop/package units (up to 50+ tons); troubleshoot VFDs, controls, compressors; perform maintenance, repairs, and replacements.
  • Boilers — Conduct combustion analysis, troubleshoot water/air flow issues, repair components, and verify proper operation.
  • Chillers — Diagnose and repair compressor, motor, starter, and drive issues (including Wye-Delta, AFD/VFD, and solid-state starters); perform leak detection on low-pressure systems; conduct insulation resistance (Megger) testing on motors; execute full teardowns, rebuilds, and overhauls of compressors, oil systems, and starters. Expertise in centrifugal, screw, and turbo-core compressors is highly valued. Troubleshoot water flow, controls, and operational issues in chiller plants.
  • Control Valves and Related Components — Diagnose and repair signal, actuator, and control issues.
  • Heat Exchangers and Cooling Towers — Identify performance deficiencies, troubleshoot flow issues, perform cleanings, gasket replacements, and reassembly.