Service Tech III

DynaTen Corporation; Fort Worth (TX); On-site; USD 70,000 - 100,000; Full time

Benefits offered by this job

Health insurance

401(k) match

Paid time off

Training and development

Job summary

DynaTen Corporation in Fort Worth is seeking an HVAC Service Technician III to diagnose, service, and repair complex commercial systems. You will conduct advanced diagnostics, manage customer interactions, and support quality service delivery.

The role requires extensive HVAC experience, EPA certification, and strong communication. We offer comprehensive benefits, training, and long-term career opportunities in a Safety-first environment.

Qualifications

• At least 7-10 years of HVAC service experience.
• Expert knowledge of HVAC systems in commercial/industrial settings.
• 3-5 years diagnosing high-end multistage/VRF/VRV systems.
• 5 years of complex mechanical, electrical, and refrigerant troubleshooting.
• 5 years electrical and controls experience, including wiring diagrams and control logic.
• EPA certification and Texas TDLR registration.
• Strong customer-service mindset and communication skills.

Responsibilities

• Service KKT equipment, cooling towers, IntelliPak units, SCUD units, pumps, and other HVAC equipment.
• Independently service and troubleshoot complex HVAC systems.
• Perform light- through heavy-commercial HVAC work.
• Conduct advanced airflow diagnostics, duct balancing, and static-pressure testing.
• Work directly with customers to support maintenance, repair, and replacement needs.
• Troubleshoot issues and correct failures within proficiency.
• Follow safety requirements and model safe practices.
• Represent DynaTen professionally to customers and leadership.
• Complete service documentation accurately and on time.
• Maintain tools, equipment, vehicle, and work areas safely.
• Perform other duties as assigned.

Skills

HVAC service

Complex diagnostics

Customer communication

Safety practices

Troubleshooting

Education

EPA certification

Texas TDLR registration

OSHA 10 certification

Tools

Electrical and controls diagrams

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 III independently diagnoses, services, and repairs complex commercial HVAC systems and specialized equipment. This advanced technician role conducts detailed system and airflow diagnostics, manages significant customer interactions, and supports high-quality Service execution.

Principal Duties and Responsibilities

• Service KKT equipment, cooling towers, IntelliPak units, SCUD units, pumps, and other assigned commercial HVAC equipment.
• Independently service and troubleshoot complex HVAC systems.
• Perform light- through heavy-commercial HVAC work.
• Conduct advanced airflow diagnostics, duct balancing, and static-pressure testing.
• 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 7-10 years of HVAC Service experience.
• Expert knowledge of HVAC systems in commercial and industrial settings, including refrigeration cycles, psychrometrics, and system-efficiency optimization.
• At least 3-5 years of experience diagnosing and troubleshooting high-end, multistage, variable-speed, and VRF/VRV systems.
• At least 5 years of complex mechanical, electrical, and refrigerant troubleshooting and repair experience.
• At least 5 years of electrical and controls experience, including interpretation of complex wiring diagrams, low- and high-voltage circuits, and advanced control logic.
• 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 manufacturer or equipment 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.

Company Narrative

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.