Sr. HVAC Service Technician - San Antonio

The Commercial HVAC Service Technician III is a senior-level field technician responsible for independently diagnosing, repairing, and maintaining complex commercial HVAC systems. This role serves as a technical lead in the field, mentoring junior technicians while delivering high-quality service to customers across healthcare, industrial, educational, and commercial facilities.

• Diagnose, troubleshoot, and repair complex commercial HVAC systems including:

  • AHUs, RTUs, VAV systems, and cooling towers

• Perform advanced electrical troubleshooting (up to 480V)

• Lead service calls and work independently with minimal supervision

• Commission new equipment and support system startups

• Perform preventative and predictive maintenance per contract scope

• Communicate clearly with customers regarding system conditions, repairs, and recommendations

• Mentor and provide technical guidance to HVAC Service Technicians I & II

• Accurately complete service reports, work orders, and documentation

• Adhere to all safety standards, OSHA regulations, and company policies

• Participate in on-call rotation as required

• 5+ years of commercial HVAC service experience

• Strong experience with large-tonnage and complex HVAC systems

• EPA Universal Certification (required)

• Valid Texas driver's license with clean driving record

• Ability to read and interpret schematics, blueprints, and control diagrams

• Strong customer service and communication skills

• Ability to work independently and manage multiple service calls

• HVAC EPA Universal certification

• Chiller service experience (Trane, Carrier, York, Daikin, etc.)

• Building Automation Systems (BAS) experience a plus

• OSHA 10 or OSHA 30 certification

• Factory training or manufacturer certifications

Founded in 1946, TDIndustries is a premier, employee-owned Mechanical, Electrical, and Plumbing (MEP) company delivering full-lifecycle building solutions-from design and construction to service and facilities maintenance. We power critical environments like hospitals, schools, data centers, stadiums, and commercial buildings across Texas and the Southwest.

Our Partners (employees) are the core of our success. As an employee-owned company, you have a voice, a stake, and a clear path to grow. Recognized by FORTUNE Magazine as a "100 Best Company to Work For," we invest in top training, career development, and a culture built on trust and servant leadership.

Join a growing team where your skills matter, and your future is built to last.

At TDIndustries, we believe opportunity should be built - and shared - by all. Whether you work with tools or technology, in the field or the office, we hire and grow people based on skill, potential, and integrity - never labels. We value the diverse paths that bring people to our team and welcome Partners of all backgrounds, including differences in race, color, religion, sex, gender identity or expression, sexual orientation, age, ability, military service, and more. What matters most is how we work together to build excellence.