HVAC Systems Reliability Engineer - Tier II

AAON, Inc.; Tulsa (OK); On-site; USD 65,000 - 95,000; Full time

Job summary

AAON, Inc. in Tulsa, OK is seeking a Tier II Advanced Technical Support Specialist within a high-impact engineering function.

The role acts as a technical authority, bridging field operations, sales, manufacturing, quality, and engineering to protect uptime and brand equity. Responsibilities include diagnosing complex HVAC issues, interpreting system behavior, reducing repeat service events, onboarding new staff, and guiding technicians toward code-compliant, performance-driven solutions while

Qualifications

• Expertise diagnosing complex mechanical and electrical HVAC issues.
• Strong knowledge of refrigeration circuits, airflow dynamics, and safety controls.
• Ability to read and interpret wiring diagrams and control schematics.
• Familiarity with commercial HVAC controls platforms and safety standards.
• Clear, confident technical communication during live service events.

Responsibilities

• Protect system uptime in mission-critical environments.
• Mitigate financial exposure and warranty risk.
• Safeguard customer relationships and brand equity.
• Interpret wiring diagrams, sequences of operation, and mechanical schematics with precision.
• Guide technicians toward safe, code-compliant solutions.
• Communicate with authority during high-pressure field events.
• Document technical findings to improve organizational learning.

Skills

Diagnostics HVAC

Refrigeration Circuits

Wiring Diagrams

Control Schematics

Safety Standards

Job description

AAON, Inc. in Tulsa, OK is seeking a Tier II Advanced Technical Support Specialist within a high-impact engineering function.

The role acts as a technical authority, bridging field operations, sales, manufacturing, quality, and engineering to protect uptime and brand equity. Responsibilities include diagnosing complex HVAC issues, interpreting system behavior, reducing repeat service events, onboarding new staff, and guiding technicians toward code-compliant, performance-driven solutions while