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 II independently performs preventive maintenance, service calls, system-performance optimization, and increasingly complex repairs on light-commercial HVAC equipment. This role applies advanced system knowledge and delivers technical solutions with a strong customer-service focus. 

Principal Duties and Responsibilities 

• Service larger rooftop units and split systems generally ranging from 10 to 20 tons. 

• Perform complex troubleshooting and repairs with minimal supervision. 

• Independently manage assigned service calls. 

• Conduct preventive maintenance and system-performance optimization. 

• Perform light-commercial HVAC work. 

• 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 3-5 years of HVAC Service experience. 

• Advanced knowledge of the refrigeration cycle, airflow dynamics, and system efficiency. 

• At least 2-3 years of experience with residential and light-commercial HVAC systems. 

• At least 2-3 years of experience with control boards, relays, transformers, and sensors. 

• At least 2-3 years of independent troubleshooting and repair experience, including complex electrical and mechanical issues, refrigerant-leak identification, and system recharging. 

• 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. 

Preferred Qualifications 

• HVAC trade-school or apprenticeship completion. 

• 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, 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.