Field Service Technician II

AAON; Tulsa (OK); On-site; USD 52,000 - 76,000; Full time

Job summary

AAON is seeking a Field Service Technician II to install, maintain, troubleshoot, and repair HVAC equipment at customer sites. You will analyze failures, perform preventive maintenance, and coordinate with internal teams to ensure reliable performance.

The role requires strong diagnostic skills, the ability to read wiring diagrams, and independent work in diverse environments. Travel to sites is expected to deliver service excellence and customer satisfaction.

Qualifications

• Requires a high school diploma or GED.
• 4+ years of experience in HVAC service, technical field service, industrial maintenance, or related field.
• Equivalency via education and experience acceptable.

Responsibilities

• Install, startup, maintain, troubleshoot, and repair HVAC equipment at customer sites.
• Diagnose and resolve mechanical, electrical, refrigeration, and controls issues.
• Conduct preventive maintenance and system evaluations to optimize performance.
• Maintain accurate service records of repairs, parts, and test results.
• Communicate findings and recommendations to customers and teams.

Skills

Customer service

Analytical thinking

Readable wiring diagrams

Troubleshooting

Independent work

Education

HS Diploma / GED

Tools

HVAC diagnostic tools

Electrical testing equipment

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.

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.
• Primary duties may include, but are not limited to:
• 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.
• Performs 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

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.