Field Service Technician II

AAON, Inc.; Tulsa (OK); On-site; USD 60,000 - 85,000; Full time

Job summary

AAON, Inc. is seeking a Field Service Technician II to install, maintain, and repair HVAC equipment at customer locations in Tulsa, OK. You will diagnose complex mechanical, electrical, and controls issues and provide high-quality service with minimal supervision.

This role emphasizes customer communication and reliable equipment performance. Responsibilities include starting up equipment, performing preventive maintenance, and documenting service activities.

Qualifications

• Requires a high school diploma or GED and 4+ years of HVAC service or related field.
• EPA Certification and HVAC-related certifications preferred.
• Experience with commercial HVAC equipment, refrigeration systems, controls, and building automation is required.

Responsibilities

• Install, startup, maintain, troubleshoot, and repair HVAC equipment at customer sites.
• Diagnose and resolve mechanical, electrical, refrigeration, and controls issues with minimal supervision.
• Perform routine inspections and preventive maintenance to optimize performance.
• Analyze equipment failures, determine root causes, and implement corrective actions.
• Maintain service records including repairs, parts, test results, and customer communications.
• Communicate findings and recommendations clearly to customers and internal teams.
• Support equipment commissioning, startup activities, and operational verification.
• Coordinate with technical support, engineering, and warranty teams to resolve complex issues.
• Ensure compliance with safety standards and company policies.

Skills

HVAC systems

Troubleshooting

Electrical controls

Mechanical equipment

Customer service

Analytical thinking

Education

High School diploma or GED

Associate degree or technical HVAC training

Tools

Building Automation Systems

Control Schematics

Job description

Job Description

Job Description: The Field Service Technician II is responsible for independently installing, maintaining, troubleshooting, and repairing HVAC equipment at customer locations. This role contributes to organizational objectives by ensuring equipment reliability, minimizing downtime, and delivering high-quality customer support. The position works with increased autonomy to diagnose and resolve complex technical issues while serving as a key resource for customers and internal teams. This role plays a critical part in maintaining customer satisfaction, supporting product performance, and promoting service excellence.

Primary Duties

• Perform installation, startup, maintenance, troubleshooting, and repair of HVAC equipment and associated systems at customer sites.
• Diagnose and resolve mechanical, electrical, refrigeration, and controls-related issues with minimal supervision.
• Conduct routine inspections, preventive maintenance, and system evaluations to optimize equipment performance.
• Analyze equipment failures, determine root causes, and implement corrective actions.
• Maintain accurate service records, including repairs performed, parts used, test results, and customer communications.
• Communicate technical findings and recommendations clearly to customers and internal support teams.
• Support equipment commissioning, startup activities, and operational verification.
• Coordinate with technical support, engineering, and warranty teams to resolve complex field issues.
• Ensure compliance with safety standards, company policies, and customer site requirements.
• Maintain company vehicles, tools, equipment, and inventory to support efficient service operations.
• Perform other duties as assigned.

Additional Primary Duties

• Assist with field testing and evaluation of new products or product enhancements.
• Provide technical guidance and support to Field Service Technician I team members.
• Support customer training on equipment operation, maintenance, and best practices.
• Assist with warranty investigations and service-related documentation.
• Perform other duties as assigned.

Job Requirements Education and Experience Requirements

• Requires a high school diploma or general education degree (GED); 4+ years of experience in HVAC service, technical field service, industrial maintenance, or a related field, Or any combination of education and experience, which would provide an equivalent background.
• Preferred: Associate degree, technical degree, or vocational training in HVAC, electrical systems, mechanical systems, or a related discipline.
• EPA Certification and HVAC-related certifications.
• Experience with commercial HVAC equipment, refrigeration systems, controls, and building automation systems.

Knowledge, Skills, and Abilities

• Working knowledge of HVAC systems, refrigeration systems, electrical controls, and mechanical equipment.
• Ability to troubleshoot and repair moderately complex technical issues independently.
• Ability to read and interpret wiring diagrams, control schematics, service manuals, and technical documentation.
• Familiarity with building automation systems, controls, and communication protocols.
• Strong customer service and relationship-building skills.
• Excellent analytical, troubleshooting, and problem-solving capabilities.
• Strong organizational skills and attention to detail.
• Ability to manage workload, prioritize service calls, and work independently.

Essential and Physical Functions

• Ability to diagnose and resolve moderately complex HVAC and controls issues in the field.
• Strong analytical thinking, problem-solving, and decision-making capabilities.
• Ability to communicate effectively with customers, contractors, and internal support teams.
• Frequent standing, walking, climbing, bending, and working around operating equipment.
• Ability to lift, carry, push, or pull up to 50 lbs. regularly.
• Ability to use fine and gross motor skills for repairs, diagnostics, and installations.
• Ability to sit and drive for extended periods while traveling to customer locations.
• Ability to work at heights, in confined spaces, and in varying environmental conditions.

Work Environment

Perform work primarily at customer facilities, construction sites, commercial buildings, and industrial locations. Frequent travel required to customer locations and operational sites. Regular exposure to varying weather conditions, temperature extremes, noise, dust, and mechanical equipment. Exposure to energized electrical systems, refrigeration equipment, moving machinery, and industrial environments. Compliance with all company policies and procedures to maintain a safe working environment. Use of personal protective equipment (PPE) as required by company and customer safety standards. This role is classified as a Safety Sensitive Position, requiring adherence to all safety protocols to ensure a safe and secure work environment.

Disclaimer

Disclaimer: Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at a time with or without notice. This job description is not an exhaustive list of all functions that the employee may be required to perform, and the employee may be required to perform additional functions. The company reserves the right to revise this job description at any time. The employee must be able to perform the essential functions of the position satisfactorily. If requested, reasonable accommodations may be made to enable employees with disabilities to perform the essential functions of the job, absent undue hardship.

Company Culture

At AAON and BASX, we’re driven by a shared commitment to innovation, performance, and sustainability. Since 1988, AAON has been at the forefront of the HVAC industry, delivering cutting-edge solutions for commercial and industrial indoor environments. Since joining forces with AAON in 2021, BASX has built on that foundation with highly engineered, custom solutions for critical environments—including cleanrooms, data centers, and laboratories—where precision and reliability matter most. Together, we design and manufacture highly configurable systems tailored to each application, ensuring our customers achieve exceptional efficiency, performance, and long-term value. Join us in shaping smarter, more sustainable environments for the future.