Service Chiller Technician - HVAC

HTS Engineering Ltd.; Austin (TX); On-site; USD 90,000 - 130,000; Full time

Job summary

HTS Engineering Ltd. is hiring a Senior Service Technician to diagnose, repair and maintain large commercial/industrial HVAC systems, with emphasis on chiller plants (centrifugal, screw, reciprocating, and absorption types).

The role requires manufacturer-specific certifications and leadership in complex troubleshooting at customer sites. Expect to perform full system teardowns, rebuilds, and preventive maintenance, while ensuring accurate work orders and clear communication with dispatch and

Qualifications

• EPA Universal Refrigerant Certification or equivalent
• Strong troubleshooting skills across electrical, mechanical, refrigeration, and controls

Responsibilities

• Diagnose, repair, and maintain complex commercial/industrial HVAC systems, focusing on large-tonnage chillers
• Perform teardowns, rebuilds, and overhauls of systems up to 50+ tons
• Lead troubleshooting of sophisticated chiller systems and related equipment and controls
• Respond to dispatched service calls to diagnose, repair, and perform preventive maintenance
• Work on Unitary/Packaged Systems, Boilers, and Chillers with various compressors and drives
• Provide detailed documentation of service activities and communicate with dispatch and customers

Skills

Troubleshooting

Customer service

Communication

Independent worker

Driver's license

Education

EPA Universal Refrigerant Certification

Chiller / manufacturer training

Tools

Microsoft Word

Microsoft Excel

Microsoft Outlook

Service management tools

Job description

Posted Tuesday, July 28, 2026 at 5:00 AM

HTS Engineering Ltd. is the largest independent commercial HVAC manufacturers’ rep in North America, with 20 locations in the US and Canada. HTS has a vibrant look and brand promise -- one that reflects our company-wide commitment to ensure theindividualsuccess of all those involved in a project’s HVAC system selection, design, purchase, installation and maintenance including our employees, suppliers, customers and end users.

Qualifications

• Relevant certifications, such as EPA Universal Refrigerant Certification and manufacturer-specific chiller training/certifications (e.g., Trane, Carrier, York, Daikin, or equivalent)
• Strong troubleshooting skills across electrical, mechanical, refrigeration, and controls systems
• Proficiency with computers and software, including Microsoft Word, Excel, Outlook, and service management tools
• Ability to work independently with minimal supervision, while collaborating effectively in a team environment
• Excellent customer service skills with the ability to communicate technical information clearly
• Valid driver's license and clean driving record
• Ability to pass pre-employment drug screening and background checks (as required)
• Willingness to work overtime, on-call shifts, weekends, and emergencies as needed

Responsibilities

• This senior role requires advanced proficiency in diagnosing, repairing, and maintaining complex commercial and industrial HVAC systems, with specialized focus on large-tonnage chiller plants (including centrifugal, screw, reciprocating, and absorption types)
• The technician performs at or beyond the capabilities of a Service Technician III, including full system teardowns, rebuilds, and overhauls
• They hold relevant manufacturer-specific certifications (e.g., Trane, Carrier, York, Daikin/McQuay, or equivalent) and demonstrate leadership in troubleshooting sophisticated chiller systems, related equipment, and controls
• 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
• Provide detailed documentation of all service activities, including accurate completion of work orders, parts usage, recommendations, and service reports before leaving the job site
• Communicate effectively with dispatch, customers, and team members; deliver initial and follow-up training to customers on system operation and maintenance
• Identify opportunities to expand service offerings by discussing additional preventive maintenance contracts, upgrades, or related services with customers
• Read and interpret blueprints, schematics, wiring diagrams, and technical manuals
• Adhere to all safety protocols, including OSHA standards, lockout/tagout procedures, confined space entry, and proper use of PPE

HTS provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by laws.