Commercial HVAC Service Technician

About the role

We are seeking an experienced Commercial HVAC Service Technician to join our growing service team in Charleston, SC. The role focuses on troubleshooting, repairing, and maintaining a wide range of complex commercial HVAC systems while delivering top‑tier customer service.

Key responsibilities

• Diagnose, service, repair and maintain commercial HVAC equipment including DX systems, packaged water‑cooled units, water‑source heat pumps, CRAC units, gas‑fired and electric heating systems.
• Perform equipment startups, verify proper operation, and conduct system performance monitoring.
• Adjust valves, pumps and controls to optimize efficiency and carry out preventative maintenance tasks such as coil cleaning, fan‑belt replacement and duct cleaning.
• Install electrical wiring, connect HVAC components, and complete startup services for newly installed equipment.
• Maintain accurate service documentation and communicate job status with dispatch throughout the day.

Required profile

• High school diploma, GED or trade school certification.
• EPA Universal Refrigerant Certification (required).
• Minimum 4 years of commercial HVAC service experience.
• Strong troubleshooting abilities on commercial HVAC equipment and controls.
• Valid driver’s license with an acceptable driving record and willingness to participate in an on‑call rotation.

Required skills

• EPA Universal Refrigerant Certification
• Commercial HVAC equipment troubleshooting
• DX systems up to 100 tons
• Packaged water‑cooled air‑conditioning units up to 150 tons
• Water‑source heat pumps
• CRAC units with humidifiers and controls
• Gas‑fired and electric heating systems up to 150 tons
• Pneumatic, electronic and DDC control systems
• Air handling units and VAV systems
• Equipment startup and commissioning
• System performance monitoring (gauges, controls, instrumentation)
• Valve, pump and control adjustment for efficiency
• Preventative maintenance (coil cleaning, fan‑belt replacement, duct cleaning)
• Electrical wiring installation and HVAC component connection

What we offer

• Competitive hourly pay based on experience ($25–$38/hr DOE)
• Medical, dental, disability, and 401(k) retirement benefits
• Paid vacation and holidays
• Ongoing technical training and career advancement opportunities
• Supportive team environment with a strong focus on safety