Electrical Thermal Imaging Surveys

Our services

What is thermal imaging?

Thermographic surveys use advanced infrared (IR) cameras to detect abnormal heat patterns within electrical, mechanical, and building systems. These temperature variations - often invisible to the naked eye - reveal early warning signs such as loose connections, overloads, imbalanced phases, or insulation breakdowns.

At Complii, our experienced engineers carry out detailed thermographic inspections to identify potential faults before they lead to costly downtime, equipment failure, or fire hazards. This proactive, non-intrusive method supports safety, compliance, and operational continuity - without interrupting your day-to-day activities.

As part of a planned maintenance programme, thermographic surveys provide measurable assurance, supporting safer operations, improved reliability, and clear evidence for regulatory and insurance compliance.

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

Detect faults such as loose connections, overloaded conductors, failing bearings, or insulation defects before they escalate. Targeted interventions reduce the risk of arcing, overheating, and unexpected equipment failures.

Minimal disruption and lower costs

Thermographic surveys are non-contact and typically carried out while systems remain energised and in service. This approach avoids unnecessary shutdowns, shortens investigation time, and enables efficient scheduling of remedial work.

Clear, actionable reporting

We provide comprehensive reports featuring image sets, temperature deltas, fault locations, and severity ratings - along with practical recommendations. Findings are clearly prioritised so you can address the highest risks first.

Enhanced safety and protection

By identifying and resolving hotspots early, you reduce the likelihood of electrical fires, equipment damage, and operational disruption- protecting people, property, and critical systems.

Proven compliance evidence

Thermographic surveys support obligations under the Electricity at Work Regulations and strengthen your overall fire safety management. Our reports offer an auditable record for insurers, regulators, and internal compliance teams.

Wider system insights

Beyond electrical panels, thermography can diagnose performance issues in HVAC systems, boilers, pumps, and building structures. It can expose missing insulation, air leakage, roof moisture ingress, or blocked coils - all of which contribute to energy loss and inefficiency.

The Complii advantage

With nationwide coverage, accredited engineers, and deep technical expertise, Complii delivers precise, dependable thermographic surveys that keep your business safe, compliant, and efficient. Our inspections form a vital part of an integrated compliance service - giving you the visibility and confidence to operate with total assurance.

Your questions answered.

Not specifically. However, the law requires that electrical systems are maintained to prevent danger. Thermal imaging is a practical way to evidence proactive inspection, and it is often requested by insurers and clients as part of a preventive maintenance regime.
Complete a baseline survey after installation or major works, then repeat at agreed intervals based on risk. Many sites schedule annual checks, with more frequent surveys for critical or high load equipment.
Yes, most electrical thermal inspections are completed with equipment energised and under load so hotspots can be observed. A load of at least forty per cent is typically recommended for meaningful results.
Surveys are non intrusive and planned around your activities. Isolations are rarely required for imaging itself. If any intrusive checks or repairs are needed, we will agree safe access and timing with your team.
Common scopes include switchboards, MCCs, distribution boards, busbars, control panels, UPS systems, transformers, motors and bearings, boilers and flues, pumps, and HVAC equipment. Building surveys can include roofs, façades, doors, and chilled spaces.
Expect thermal and visual images, temperature readings and differentials, asset references, locations, severity grading, and recommended actions. We also advise on retest intervals and any conditions that may have affected readings, such as load or ambient temperature.

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What is thermal imaging?

How we can help.

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