Mechanical Infrastructure Engineering & Maintenance in Orange County, CA


Accurate diagnosis and fast, precise repair is the hallmark of our service teams at Therma. Your mechanical infrastructure is critical to the performance of your building and our technicians tackle your issues with innovative but pragmatic solutions to get your facilities and systems working to peak performance.

We understand the critical relationship between supporting a mechanical infrastructure to sustain a comfortable working environment and process application, while controlling costs, managing energy consumption and achieving highest operational performance.

Therma is a full-service design-build mechanical services provider serving Orange County and surrounding areas including Anaheim, Irvine, and Orange. We specialize in creating and maintaining safe, comfortable, and energy-efficient environments as well as facilities and systems that run smoothly and last longer. In addition to fabrication, BIM, and energy efficiency, we are experts in complex HVAC systems and high-purity process piping and controls.

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    What We Do

    • Energy Services
    • Test, Adjust and Balance (TAB)
    • Heating, Ventilation and Air Conditioning (HVAC)
    • Plumbing & Service
    • Fabrication and Engineering
    • Reactive Repairs and Preventative Maintenance
    • Architectural Sheet Metal
    • Building Automation
    • Infrastructure Management
    Smart HVAC: IoT for Improved Efficiency, Sustainability, & Control
    Commercial HVAC Chiller Maintenance Tips & Advice

    Orange County's Foremost Mechanical Contractors


    Therma services a range of industries and types of facilities. From high-rises to cleanrooms, laboratories, and high-tech manufacturing facilities, we have what it takes to keep your systems running and your occupants safe.

    With over 50 years in the business and counting, Therma is known throughout Orange County for our innovative solutions and outstanding customer care. We offer cutting-edge, elegant solutions that are budget-mindful to clients new and old across Orange County. Add to that our 24/7 fast and easy repair solution services, and it’s no wonder Therma is an established leader in mechanical construction and management.

    If you are seeking industry-leading mechanical solutions with unmatched customer service, then contact Therma today – Orange County’s leading HVAC service and mechanical construction company.