Commercial HVAC service & repair

Commercial HVAC problems solved.

STG Mechanical helps commercial facilities identify equipment failures, complete practical repairs, and make informed decisions about next steps.

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Commercial capabilities

Service for equipment that keeps a business operating.

  • Packaged rooftop units and commercial split systemsHeating, cooling, airflow and performance concerns.
  • Three-phase electrical troubleshootingMotors, contactors, protection devices and control circuits.
  • Controls, economizers and VFDsSequence-of-operation, control signal and mechanical system issues.
  • Refrigeration and airflow diagnosticsPractical evaluation of the full operating system.
Our approach

Accurate diagnosis helps reduce disruption.

Understand the symptoms

Review the reported issue, operating history and conditions at the site.

Test the system

Perform electrical, mechanical, controls and refrigeration diagnostics as appropriate.

Explain the path forward

Document findings and discuss authorized repair options or equipment condition.

Built for recurring and intermittent failures.

Complex HVAC problems can be caused by more than one issue. STG Mechanical uses a methodical process to help distinguish a root cause from a symptom.

Scope boundary: STG Mechanical’s mechanical service scope does not include main electrical distribution, panel, breaker, feeder, or line-voltage work performed by the electrical contractor unless specifically agreed in writing.

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