Non-contact thermal imaging surveys for heat loss surveys, fixed-wire testing and facilities management.

Thermal imaging surveys enable us to ‘see’ heat loss (or gain). Our engineers capture thermal data and analyse is to find missing insulation, air leakage, faulty wiring and system stability. This helps our clients to save time, save money and improve safety.

Thermal Imaging Building Survey

Building Survey

Building thermal imaging surveys to measure heat loss, detect thermal bridging and assess insulation.

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Thermal Imaging BREEAM Credit

BREEAM Credit Survey

Specialist building thermal imaging surveys in accordance with BRE 176 for BREEAM Credit.

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Thermal Imaging Electrical Inspection

Electrical Inspection

Accurate temperature measurement of main panels, distribution boards and switchboards.

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Thermal Imaging Photovoltaic Inspection

Photovoltaic Inspection

Specialist aerial surveys to detect faulty cells, string-errors, organic debris and defective diodes.

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Thermal Imaging Data Centre Inspection

Data Centre Inspection

Specialist condition monitoring to monitor heat-flow performance in hot and cold aisles.

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Thermal Imaging Drone Inspection

Drone Inspection

Aerial thermal imaging surveys using drones to identify heat loss and missing or damaged insulation.

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Frequently Asked Questions

Thermal imaging uses heat-sensitive cameras to detect subtle differences in temperature. These cameras can detect temperature differences of less than 1ºC.

For non-contact measurement, thermal cameras can identify, capture and assess heat loss. This is used to inspect buildings, electrical equipment, rotating machinery and devices.

Any object with a temperature above absolute zero (-273.15ºC) emits infrared radiation. The higher the temperature of the object, the greater the intensity of infrared radiation.

Thermal imaging technology is designed to detect the intensity of radiation given off by an object. Once detected, a thermal camera creates an image of the object – based on the radiation it emits. This image is rendered using artificial colours, turning invisible radiation into a visible image.

Once captured, thermal images can be analysed to establish patterns and interruptions. For example, a loose connection in an electrical circuit or heat loss in a commercial building.

Thermal imaging cameras can only detect heat as it radiates off of an object, and as such cannot “see” through solid objects such as brick walls.

This depends on your project and requirements. For example, a basic thermal imaging survey for a building starts at £595 (excluding VAT).

The main cost involved with a thermal imaging survey is the equipment.

It’s important to note that glass is opaque to most wavelengths of infrared light. As a result, thermal imaging cameras do not use conventional glass lenses. Instead, exotic materials such as germanium must be used.

Because of this, the cost of an inspection-grade infrared camera can range from £8,000 up to £40,000.

Cheaper thermal imaging cameras are available. But the poor resolution makes them unsuitable for commercial surveys. For example, a FLIR C2 camera has only 4,800 measurement pixels. Whereas a professional IR camera can have up to 786,432. Fewer pixels means a lower resolution, which can lead to faults and defects being missed. Lower-range cameras also have a poorer sensitivity, making captured data less reliable.

Despite the equipment costs, infrared surveys are still the most cost-effective way to identify heat loss.

Thermal imaging cameras cannot take accurate readings without adjustments. Factors such as reflectivity and emissivity must be changed to collect reliable information.

Accreditation verifies that a thermographer can:

  • Operate an infrared camera
  • Collect accurate temperature data
  • Create reliable thermal inspection reports

Our thermographers are accredited by both the British Institute of Non-Destructive Testing and the Awarding Body of the Built Environment. In addition to this, we have PCN Category 2 and 3 thermographers who are approved by the UKTA to conduct BREEAM thermal imaging surveys.

iRed is CHAS Accredited, Cyber Essentials Tier 1 Certified, CAA Approved and ISO 9001:2015 Certified.


We operate with £5m Public Liability and £1m Professional Indemnity insurance.

We help our clients improve safety, reliability and efficiency.

Our engineers provide nationwide coverage for a wide range of inspection services.

Get a free estimate today