Commercial HVAC Service Technician

Parker-Arntz Plumbing & Heating; Detroit (MI); On-site; USD 80,000 - 110,000; Full time

Job summary

Parker-Arntz Plumbing and Heating is seeking a Commercial HVAC Service Technician with 7+ years of commercial service experience. The role focuses on diagnosing, repairing, commissioning, and optimizing complex HVAC systems, serving as a subject-matter expert for clients.

The ideal candidate has advanced skills in control wiring, building automation interfaces, and air balancing, strong troubleshooting abilities, and the ability to read mechanical drawings and schematics.

Qualifications

• 7+ years of commercial HVAC service experience.
• Strong control wiring, low-voltage circuits & control logic.
• Proficient in commercial air balancing.
• Able to read mechanical drawings and control diagrams.
• EPA 608 Certification (Type II or Universal).
• Excellent troubleshooting and independent work ethic.
• Effective client communication.
• Valid driver’s license and insurable to drive.

Responsibilities

• Diagnose, repair, commission, and optimize commercial HVAC systems.
• Troubleshoot electrical, refrigeration, and mechanical components.
• Read wiring diagrams, schematics, ladder logic, and sequence-of-operation documentation.
• Ensure work meets local codes, safety regulations, and manufacturer specifications.
• Provide recommendations for controls upgrades and energy-efficiency improvements.
• Communicate technical findings clearly to facility managers and clients.

Skills

Commercial HVAC service

Control wiring

Low-voltage circuits

Air balancing

Diagnostics & troubleshooting

Client communication

Education

Associate degree in HVAC or related field

EPA 608 Certification (Type II or Universal)

Tools

Trane BAS

Johnson Controls

Siemens BAS

Honeywell BAS

Carrier BAS

Job description

Parker-Arntz Plumbing and Heating is adding a Commercial HVAC Service Technician to our growing team! Qualified candidates will have no less than 7 years of commercial service experience. If you are looking to join a fast-growing, dynamic organization that offers career growth potential, please submit your resume for immediate consideration! The Commercial HVAC Service Technician we are seeking has advanced skills in control wiring, building automation interfaces, and air balancing. This role is responsible for diagnosing, repairing, commissioning, and optimizing commercial HVAC systems while serving as a subject-matter expert to clients. The ideal candidate demonstrates exceptional technical proficiency, clean and accurate wiring practices, strong troubleshooting abilities, and a deep understanding of airflow dynamics in commercial environments.

Key Responsibilities

Service, Diagnostics & Repair

• Perform troubleshooting, repair, and maintenance on commercial HVAC equipment including RTUs, split systems, VRF/VRV systems, heat pumps, boilers, air handlers, VAV systems, exhaust systems, and energy recovery units.
• Conduct advanced diagnostics on electrical, refrigeration, and mechanical components.
• Interpret wiring diagrams, schematics, ladder logic, and sequence-of-operation documentation.
• Ensure all work meets local codes, safety regulations, and manufacturer specifications.

Control Wiring & Building Automation

• Install, repair, and commission control wiring, sensors, actuators, relays, and low-voltage circuits.
• Interface with Building Automation Systems (BAS), including troubleshooting communication issues and verifying proper sequence of operations.
• Identify control failures, incorrect wiring, or programming issues affecting system performance.
• Provide recommendations for controls upgrades, retrofits, and energy-efficiency improvements.

Air Balance & System Optimization

• Conduct airflow testing, adjustments, and balancing for commercial HVAC systems.
• Verify proper operation of VAV boxes, static pressure controls, economizers, and ventilation systems.
• Utilize airflow measurement tools (manometers, flow hoods, anemometers) to achieve design specifications.
• Document air balance findings and recommend system improvements for comfort, efficiency, and code compliance.

Customer Interaction

• Communicate technical findings clearly to facility managers, contractors, and building owners.
• Prepare accurate service reports, recommendations, and follow-up actions.
• Represent the company with professionalism, reliability, and a customer-first approach.

Qualifications

• 7+ years of commercial HVAC service experience.
• Strong expertise in control wiring, low-voltage circuits, and control logic.
• Demonstrated proficiency in commercial air balancing.
• Ability to read and interpret mechanical drawings, control diagrams, and airflow specifications.
• EPA 608 Certification (Type II or Universal).
• Excellent troubleshooting skills and ability to work independently.
• Ability to interface with clients and effectively communicate service/project outcomes and recommendations.
• Applicants must have a current driver’s license and a satisfactory driving record, must be insurable to drive to and from assigned jobs.

Preferred:

• Experience with common BAS platforms (e.g., Trane, Johnson Controls, Siemens, Honeywell, Carrier).
• OSHA 10/30 safety certification.
• Associates degree or technical schooling in HVAC, controls, electronics, or a related field.

Requirements

• Strong knowledge of HVAC systems, including understanding of electrical wiring, refrigerant handling, and airflow principles
• Proficient in using tools and equipment commonly used in HVAC installations and repairs
• Ability to read and interpret blueprints, schematics, and technical manuals
• Excellent problem-solving skills to diagnose issues and implement effective solutions
• Strong attention to detail to ensure accurate installation and repair work
• Effective communication skills to interact with clients, team members, and supervisors