BAS Service Technician

NRG Controls Inc.; Nashville, Northern (TN, KY); On-site; USD 60,000 - 80,000; Full time

Job summary

NRG Controls Inc. is seeking a BAS Service Technician to diagnose, repair, and maintain Building Automation and HVAC control systems for our clients. You will ensure optimal operation, energy efficiency, and compliance with standards while collaborating with the Service Manager and teammates.

The role requires 3+ years of BAS or HVAC experience, proficiency with wiring diagrams, and the ability to read schematics. Travel and after-hours support may be required as part of a rotating schedule.

Qualifications

• Requires high school diploma or GED; technical trade school or associate’s degree preferred.
• Minimum of three years of experience in building automation, HVAC controls, or related field.
• Ability to read and interpret wiring diagrams, mechanical drawings, and specifications.
• Valid driver’s license with clean record.

Responsibilities

• Perform preventive maintenance, diagnostics, and repair of BAS and HVAC control systems.
• Troubleshoot control wiring, sensors, actuators, and network issues.
• Adjust and optimize system parameters for energy efficiency.
• Review control drawings, sequences, and schematics.
• Assist with system retrofits, upgrades, and integrations.
• Calibrate and replace defective components.
• Update software/hardware per manufacturer guidelines.
• Maintain service documentation and communication with customers.
• Provide after-hours and emergency service on rotating schedule.

Skills

Control systems

Diagnostics

Troubleshooting

Reading drawings

Documentation

Independence

Education

High school diploma or GED

Trade school or associate’s degree preferred

Tools

Laptop-based diagnostic software

Hand tools

Job description

Description

Position Summary:

The BAS Service Technician is responsible for diagnosing, repairing, and maintaining Building Automation Systems (BAS) and HVAC control systems for NRG Controls’ clients. This position ensures that all systems function efficiently, meet design specifications, and operate in compliance with company and customer standards. The BAS Service Technician works closely with the Service Manager and other team members to provide responsive, high-quality service while maintaining strong customer relationships.

Essential Duties and Responsibilities:

• Perform preventive maintenance, diagnostics, and repair of BAS and HVAC control systems.
• Troubleshoot control wiring, sensors, actuators, and network communication issues.
• Adjust and optimize system parameters to ensure proper operation and energy efficiency.
• Review and interpret control drawings, sequences, and schematics.
• Assist with system retrofits, upgrades, and integrations.
• Calibrate and replace defective control components, including field devices and controllers.
• Perform software and hardware updates in accordance with manufacturer recommendations.
• Maintain accurate service documentation, including work orders, test results, and system notes.
• Communicate technical findings and recommendations to customers and internal teams.
• Adhere to all company safety standards, OSHA requirements, and job site protocols.
• Provide after-hours and emergency service support on a rotating schedule as needed.

Requirements

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Required Qualifications:

• High school diploma or GED required; technical trade school or associate’s degree preferred.
• Minimum of three (3) years of experience in building automation, HVAC controls, or a related field.
• Strong knowledge of control system fundamentals, sensors, actuators, and communication networks.
• Ability to read and interpret wiring diagrams, mechanical drawings, and specifications.
• Proficiency with basic hand tools, test instruments, and laptop-based diagnostic software.
• Valid driver’s license and clean driving record.

Preferred Qualifications:

• Experience with Tridium Niagara, Johnson Controls, or similar BAS platforms.
• Familiarity with BACnet, Modbus, and LonWorks communication protocols.
• Understanding of mechanical and electrical systems related to HVAC operations.
• Factory certifications or manufacturer training in BAS or HVAC controls.
• Experience with commissioning and system start-up processes.

Knowledge, Skills, and Abilities (KSAs):

• Strong analytical and problem-solving skills.
• Excellent communication and customer service abilities.
• Detail-oriented with strong documentation and recordkeeping habits.
• Ability to work independently and manage multiple service calls daily.
• Professional demeanor and commitment to safety and quality workmanship.

Physical Demands and Work Environment:

Work is performed in both office and field environments. The role frequently involves standing, walking, bending, and working in mechanical rooms or rooftop environments. Must be able to lift and carry up to 50 pounds. Personal protective equipment (PPE) is required.