Commercial HVAC Service Technician

Kelso Industries; Hamilton (OH); On-site; USD 65,000 - 95,000; Full time

Job summary

Kelso Industries is seeking a Senior Commercial HVAC Service Technician to service, troubleshoot, and repair HVAC equipment, including VRF systems. You will work on-site with a focus on safety, customer service, and quality repair workmanship.

The role requires 5+ years of experience, a valid HVAC license, universal refrigerant license, and the ability to work on rotating on-call schedules and active construction sites.

Qualifications

• 5+ years of commercial HVAC, plumbing, or refrigeration experience.
• HVAC license is required and Universal Refrigerant License is required.
• Journeyman HVAC license preferred; hydronic/plumbing licenses a plus.
• Valid driver’s license with a clean driving record; access active construction sites.

Responsibilities

• Install, maintain, and repair HVAC and refrigeration systems including boilers, chillers, fans, pumps, valves, thermostats, and motors.
• Perform routine inspections and preventive maintenance.
• Install, commission, and troubleshoot VRF systems.
• Diagnose and fix mechanical and electrical issues.
• Read blueprints and work orders; ensure safety and code compliance.
• Provide exceptional customer service and complete billing paperwork.

Skills

5+ years commercial HVAC

On-call / rotating schedule

Customer service oriented

Education

HVAC license

Journeyman HVAC license preferred

Universal Refrigerant License required

Hydronic/plumbing licenses a plus

Job description

Together We Build – Partnership, Innovation, Excellence, and Safety

At Kelso Industries, 4,000+ employees across 40+ companies work together to deliver exceptional HVAC, mechanical, plumbing, refrigeration, and electrical solutions nationwide. Join us to grow your career, make an impact, and be part of a team where innovation, excellence, and safety come first.

Summary

Four-Star Mechanical is seeking a highly skilled Senior Commercial HVAC Service Technician with extensive experience servicing, troubleshooting, and repairing commercial HVAC equipment, including Variable Refrigerant Flow (VRF) systems. The ideal candidate is a self-driven professional who can work independently, provide exceptional customer service, and maintain the highest safety standards.

Schedule

• 8-hour shifts, Monday–Friday
• Overtime and rotating on-call availability (7-day rotations)

Key Responsibilities

• Install, maintain, and repair HVAC and refrigeration systems, including boilers, chillers, fans, pumps, valves, thermostats, and motors
• Perform routine inspections and preventive maintenance
• Install, commission, and troubleshoot VRF systems
• Diagnose and fix mechanical and electrical issues
• Work with copper tubing and piping, including cutting, threading, testing, and insulating
• Use hand tools, power tools, and test equipment safely
• Ensure compliance with safety practices and building codes
• Read and follow blueprints, diagrams, and work orders
• Provide excellent customer service and complete billing paperwork
• Support emergency repairs while on-call
• Perform other duties as assigned

Qualifications

• 5+ years of commercial HVAC, plumbing, or refrigeration experience
• HVAC and brazing license required
• Journeyman HVAC license preferred
• Universal Refrigerant License required
• Hydronic or plumbing licenses a plus
• Valid driver’s license and clean driving record
• Able to be on a rotating on-call schedule
• Must be able to access and work on active construction sites

Preferred

• Basic knowledge of direct digital controls (DDC) and network systems (TCP/IP, RS-485)

Work Environment

• Work may be done in an office or on job sites
• Fieldwork includes exposure to outdoor weather, heights, mechanical parts, and loud noise
• Must be physically present at job sites as needed
• Flexibility with hours may be required

Physical Requirements

• Standing and walking for extended periods
• Lifting up to 50 lbs or more
• Bending, kneeling, crouching, and reaching regularly
• Occasional desk/computer work
• Must be able to navigate all areas of job sites

Why Join Kelso Industries?

Join us and be part of a team dedicated to creating efficient, sustainable, and high-performance environments that make a lasting impact across the industrial, commercial, and institutional sectors.

Here You Will Experience

• Growth Opportunities: Develop new skills, take on exciting challenges, and advance your career in meaningful ways.
• Company Culture: You’ll thrive in an environment that supports your growth, values your contributions, and makes work fulfilling and enjoyable.
• Impact: Your work directly contributes to meaningful outcomes, allowing you to see the difference you make and feel a sense of purpose every day.
• Competitive Compensation & Benefits: You’ll be rewarded fairly for your contributions while enjoying perks that enhance your financial security, health, and overall well-being.

Kelso Industries celebrates diversity and is committed to creating an inclusive environment for all employees. We do not discriminate in any aspect of employment based on race, color, religion, national origin, ancestry, gender, sexual orientation, gender identity and/or expression, age, veteran status, disability, or any other characteristic protected by federal, state, or local employment discrimination laws where Kelso does business.