HVAC Service Technician IV

Comfort Systems USA, Inc.; Fort Worth (TX); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Health insurance

Dental & Vision insurance

401(k) match

PTO and paid holidays

Training and career development

Job summary

Comfort Systems USA, Inc. is seeking an HVAC Service Technician IV to lead complex commercial and industrial HVAC systems. You will diagnose advanced mechanical, electrical, refrigerant, and control issues, mentor other technicians, and manage critical customer relationships.

The role emphasizes safety, quality, and professional communication, with strong benefits and ongoing training opportunities in a team-oriented environment.

Qualifications

• HVAC service experience required, minimum 10 years.
• Master-level expertise with high-efficiency, multizone, industrial-grade equipment.
• Troubleshooting and repair of complex mechanical, electrical, and refrigerant issues.
• 5+ years in advanced controls/automation including building automation & direct digital control systems.
• EPA certification and Texas TDLR registration required.
• Strong customer-service mindset and communication skills.
• Commitment to safety, integrity and quality; able to pass drug screen and background checks.

Responsibilities

• Service screw and centrifugal chillers, air-cooled chillers, and advanced equipment.
• Diagnose and resolve complex mechanical, electrical and refrigerant issues.
• Support HVAC maintenance, repair, and equipment replacement with customers.
• Mentor technicians and provide technical guidance.
• Communicate conditions, work performed, and follow-up needs clearly to customers and leadership.
• Maintain documentation, tools, vehicle, and work area in safe, professional condition.

Skills

HVAC service

Troubleshooting

Electrical work

Refrigerants

Controls & automation

Customer service

Safety & compliance

Communication

Team mentorship

Drug test ready

Job description

About Us

Since 1980, DynaTen Corporation (a Comfort Systems USA Company) has delivered high-quality Commercial Construction and Service Solutions across the greater North Texas market. We partner with our clients to provide technical expertise and high-level execution on every project. As a result, DynaTen is a trusted provider of HVAC, Plumbing, and Building Automation Controls solutions. Our culture is built on accountability, teamwork, and a commitment to developing our people. We take pride in promoting from within, supporting both field and office teams, and delivering results the right way. We offer strong long-term career opportunities, excellent benefits, and a positive, team-oriented work environment.

Position Summary

The HVAC Service Technician IV serves as a master-level technical resource responsible for the most complex commercial, industrial, and specialized HVAC systems. This role manages critical customer relationships, diagnoses advanced mechanical, electrical, refrigerant, and controls issues, and mentors other technicians.

Principal Duties and Responsibilities

• Service screw chillers, centrifugal chillers, air-cooled chillers, Flakt and Joy fans, pneumatic systems, and other advanced equipment.
• Diagnose and resolve complex issues involving high-efficiency, multizone, and industrial-grade equipment.
• Service specialized HVAC applications, including refrigeration, chillers, boilers, and building automation systems.
• Mentor and provide technical guidance to other technicians.
• Work directly with customers to support HVAC maintenance, repair, and equipment-replacement needs.
• Troubleshoot HVAC issues and correct mechanical failures within the technician’s demonstrated level of proficiency.
• Follow established safety requirements and model safe work practices.
• Represent DynaTen professionally as a direct customer contact.
• Communicate equipment conditions, work performed, recommendations, and follow-up needs clearly to customers and Service leadership.
• Complete required service documentation accurately and on time.
• Maintain tools, equipment, vehicle, and work areas in a safe and professional condition.
• Perform other duties as assigned.

Required Qualifications

• At least 10 years of HVAC Service experience.
• Master-level system expertise involving high-efficiency, multizone, and industrial-grade equipment.
• At least 10 years of troubleshooting and repair experience involving complex mechanical, electrical, and refrigerant issues.
• At least 5 years of advanced controls and automation experience, including building automation and direct digital control systems.
• EPA certification and Texas TDLR registration.
• Demonstrated technical capability with a customer-service mindset.
• Strong verbal and written communication skills.
• Commitment to integrity, safety, and quality.
• Positive and self-motivated approach.
• Ability to pass a pre-employment drug screen and background check.

Preferred Qualifications

• Advanced chiller, boiler, refrigeration, controls, or manufacturer certifications.
• OSHA 10 certification.

What you can expect

• Exceptional health, dental, and vision insurance.
• Paid Employee-Only Medical Coverage.
• In-house and manufacturer-led training and leadership development.
• Long-term career growth into operations, sales, technical, and/or leadership roles.
• Comprehensive benefits package and employer-sponsored professional memberships.
• 401(k) match, PTO, holiday pay, and more.
• Stable work with a 40-hour guarantee.

Working Conditions

Work is performed in customer facilities, mechanical rooms, rooftops, and indoor and outdoor Service environments. The role may require standing, walking, climbing ladders, bending, lifting, using tools, working around energized mechanical and electrical equipment, and exposure to weather, noise, and non-climate-controlled conditions. Required PPE and all company and customer safety procedures must be followed. Schedule flexibility and participation in after-hours or on-call work may be required based on Service needs.

EEO Statement

Comfort Systems USA, Inc., together with its subsidiaries, provides equal employment opportunities to all employees and applicants for employment without regard to race, color, religion, sex, sexual orientation, pregnancy or maternity, national origin, citizenship, genetic information, disability, protected veteran status, gender identity, age, or any other status protected by law. This policy applies to recruiting, hiring, transfers, promotions, terminations, compensation, benefits, and all other terms and conditions of employment. The statements contained in this document are intended to describe the general nature and level of work being performed by an employee assigned to this description. They are not intended to constitute a comprehensive list of functions, duties, responsibilities, or local variances. Management retains the discretion to add to or change the duties of the position at any time. This job description does not state or imply that these are the only duties to be performed by the employee in this position. Employees may be required to follow other job-related instructions and perform other job-related duties requested by an authorized person. All duties and responsibilities are essential functions and requirements and are subject to reasonable accommodation for qualified individuals with disabilities. The requirements listed are the minimum levels of knowledge, skills, and abilities. This document does not create an employment contract, implied or otherwise, and employment remains at will. DynaTen leads the Dallas/Fort Worth Metroplex in engineering, mechanical contracting, building automation controls, service and maintenance since 1980. We take pride in offering our customers a comprehensive approach to mechanical construction design and service management, delivered by our highly skilled teams. With a dedicated 50,000 square foot prefabrication facility, we excel in fabricating sheet metal, piping, plumbing, and multi-trade rack (MTR) systems. Our innovative and advanced technical solutions are tailored to assist clients in maximizing efficiency, controlling costs, and meeting stringent new safety laws and environmental regulations. At DynaTen, we prioritize fostering professional growth and empowering our talented team to drive innovation and collaboration. We are building a legacy for our Colleagues, Clients and Community with industry leading Expertise and Execution. Together, we steer our growth and success, ensuring exceptional outcomes for both our team and our clients.