CircuitFix
    HVAC Electronics Repair
    Commercial Infrastructure Support

    HVAC Electronics Repair

    Fast, reliable repair for HVAC drive boards, inverters, and control PCBs. We help facilities managers across the South East avoid costly chiller and AHU replacements.

    Chiller & AHU controls
    VFD and inverter repair
    On-site diagnostics available
    Fast turnaround times

    Operational Impact

    Unexpected System Failure

    Sudden electronic faults causing complete operational downtime.

    No Spare Parts Available

    OEMs no longer support the system, making replacement impossible.

    High Cost of Replacement

    Upgrading the entire infrastructure is financially unviable.

    Our Capability

    VFD & Inverter Repair

    We diagnose and repair variable frequency drives and inverters for major HVAC brands, resolving power stage and control logic failures.

    Chiller Control Boards

    Component-level repair for proprietary chiller control boards, preventing the need for complete chiller replacement when parts are scarce.

    No Spare Parts?

    When OEMs quote months for delivery or declare parts obsolete, our component-level repair gets your HVAC systems running in days.

    Engineering Workflow

    A structured, professional approach to returning your systems to full operation.

    01

    Initial Assessment

    Rapid evaluation of the fault and system impact.

    02

    Component Diagnostics

    Deep-level testing of electronic components.

    03

    Precision Repair

    Replacing faulty components and reinforcing weak tracks.

    04

    Testing & Handover

    Full load testing to ensure operational reliability.

    Why Repair Instead of Replace?

    OEMs often push for full system upgrades when a single electronic component fails. We offer a more logical, cost-effective alternative that keeps your existing infrastructure running.

    Minimize Downtime

    Repairing a board takes days; replacing a system takes weeks or months.

    Cost Effective

    Component-level repair is typically a fraction of the cost of full system replacement.

    Preserve Integration

    Avoid the need to reprogram or re-integrate a completely new system.

    Check System Viability

    Not sure if your board can be saved? Speak directly with an engineer to discuss the fault symptoms and repair probability.

    Discuss Repair Viability

    Industries We Support

    Commercial Buildings
    Manufacturing
    Facilities Management
    Healthcare

    Regional Field Support

    Our mobile engineering teams provide rapid on-site diagnostics across London, the Home Counties, and South East England. We come to your facility to diagnose faults directly on the machine or control panel.

    Request On-Site Diagnostics

    Frequently Asked Questions

    Related Services

    BMS Repair HVAC Electronics Industrial Electronics Emergency Support

    System Down? Get an Assessment Today.

    Our engineers provide rapid diagnostics across London and the South East. We focus on repair over replacement to minimize your downtime and costs.

    Request AssessmentSpeak to an Engineer