Electrical services

Thermal imaging surveys.

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What are thermal imaging surveys?

Thermal imaging surveys use specialist infrared (IR) cameras to detect abnormal heat patterns within electrical and mechanical systems. These temperature variations, often invisible to the eye, reveal early signs of faults such as loose connections, overloads, or insulation breakdown.

At Complii, our engineers carry out detailed thermographic inspections to identify potential risks before they cause costly failures, downtime, or fire hazards. It’s a proactive way to maintain safety, compliance, and operational continuity – without interrupting your day-to-day activities.

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Why choose Complii?

How we can help

Protect your people, property, and business. Here’s why we’re the right choice for thermal imaging surveys.

Early fault detection

Thermal imaging highlights hidden issues in electrical panels, switchgear, and circuits before they escalate, helping prevent breakdowns and unplanned outages.

Increased safety and compliance

Regular thermographic testing supports compliance with the Electricity at Work Regulations, keeping people, assets, and buildings safe.

Reduced maintenance costs

By addressing faults early, you can plan repairs on your terms and avoid costly emergency callouts or production losses.

Non-intrusive inspection

Surveys are carried out while systems remain live, allowing for a full assessment with zero disruption to your operations.

Detailed, actionable reporting

You’ll receive a clear report with prioritised recommendations linked to relevant safety standards, helping you take informed action quickly.

Predictive maintenance and long-term assurance

Ongoing thermal imaging as part of a planned maintenance schedule helps maintain efficiency, reduce downtime, and extend the lifespan of your electrical systems.

Your questions answered.

Thermal imaging can identify a range of electrical and mechanical issues, including loose connections, phase imbalances, worn bearings, corroded components, and insulation breakdown.
No. It’s a non-contact process carried out while equipment is running, so your operations continue as normal during testing.
While not mandatory, thermal imaging supports compliance with UK safety regulations by proving proactive maintenance and risk management.
Annual surveys are recommended as part of a preventative maintenance programme, though high-demand sites may benefit from more frequent inspections.
You’ll receive a detailed thermographic report with infrared images, temperature readings, and a clear summary of findings with practical recommendations.
We inspect electrical systems, motors, transformers, switchgear, and mechanical equipment, as well as building fabric for insulation and HVAC performance issues.

News & insights

Insights / September 23, 2025

The benefits of thermographic imaging

Thermographic imaging is a powerful tool for identifying potential electrical faults before they become serious problems. By using specialist thermal cameras, engineers can detect heat patterns that indicate issues such as overloading, loose connections, or failing components.

For businesses, this proactive approach helps reduce risks, avoid costly downtime, and demonstrate compliance with electrical safety regulations.

News / September 23, 2025

PH Water and Air Technologies joins Complii

We are pleased to announce that PH Water and Air Technologies has joined Complii. This addition strengthens our water and air compliance services and further supports our mission to provide trusted, integrated compliance solutions across the built environment.

News / April 11, 2025

Sarah Dixon appointed CEO of Complii

Complii, the UK leader in integrated safety and regulatory compliance across electrical, fire, and water, has announced the appointment of Sarah Dixon as their new Chief Executive Officer.

Sarah joins Complii from Johnson Controls where she has been Managing Director of the fire and security businesses across the UK and Ireland.

See all news and insights

Compliance with confidence.

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