Thermal imaging and testing is a life-saving, fault-finding solution.

Most electrical faults are caused by overheating due to loose connections or overloading, which can lead to fires.

As part of your commercial building’s Planned Preventative Maintenance (PPM), Thermal Testing can help you identify existing faults and foresee future potential problems in your electrical installation.

To get sparks flying (with us, not in your premises!), hit the big orange button below to submit an enquiry for a call-back.

3 Benefits of Electrical Thermal Testing

Electrical faults and failures can result in business downtime and data loss – the worst case scenario is someone gets hurt. Here are three ways you’ll benefit by getting Thermal Testing carried out in your commercial premises:

1. Identify Faults

Have a competent specialist carry out thermal testing of your electrical installation periodically (we recommend every year) to identify high levels of heat causing faults in your electrical installation

2. Prevent Fires

Thermal imaging can also help detect faults before they happen, as much as 6 months to a year in advance! Knowing this can help you keep your people and your premises safe from the threat of an electrical fire

3. Plan Diligently

By incorporating thermal imaging as part of your building's routine maintenance, required repairs can be planned for well ahead of time, helping you to avoid unwanted surprises which could strain your budget

What is Thermal Testing & Why Do I Need It?

Ever wanted the power of a crystal ball? With Thermal Imaging, or Thermography, you can. 

This resource is indispensable for your business as it finds electrical faults in your building which are invisible to the naked eye, and can even predict future faults 6 months to a year before they happen!

The way this technology does it is by looking at the heat given off by way of infra red (IR) energy waves. Check this image out to the right – you can that there’s red patches in the middle of the screen indicating there’s overheating in the panel it’s pointing at. This would then prompt further investigation and corrective action to be taken.

Many building managers opt to have Thermal Testing as part of their Fixed Wire Testing (EICR). It’s not a requirement to have Thermal Testing, but it is a requirement, as per the Electricity at Work Act 1974, to have systems maintained to prevent death or injury from electrical causes. And Thermal Testing, along with your Fixed Wire Testing, is your resource to help you do this.

What happens during thermal testing?

Compared to Fixed Wire Testing, which gives you your Electrical Installation Condition Report (EICR), and is typically required every 5 years (depending on your building), Thermal Testing is a complementary measure that can be used to identify faults, both existing and those which haven’t fully materialised. 

Thermal Testing is non-invasive because it only requires pointing a camera at a given area. It should be done when the building is at it’s busiest (i.e. when there’s the most amount of electricity being used) to get an accurate reading of the extent of any electrical damage (or pending problems). 

Fixed Wire Testing, by contract, should have all the electricity shut off and is pretty invasive, plus a big part of it involves visual inspections, and signs of overheating are not always obvious enough to be visible.

The following can be detected during your Thermal Testing visit:

  • Corrosion
  • Circuit overloads
  • Loose connections
  • Phase imbalances
  • High resistances in fuses

We advise Thermal Testing is carried out every year to help identify problems as soon as they happen and avoid letting faults fester.

We're compliance nerds, here to keep you above board

We’re experts at keeping commercial buildings safe and legally compliant. But we’re also pretty great at customer service, too. We understand that protecting your building is a top priority, but we also know that getting the right team behind you to help you do it is just as important.

You can trust us at WFP Fire & Security to help you:

Keep your people safe from electrical injuries

Follow regulations and exercise due diligence

Stay headache-free with support when you need it

If you’re looking for a team to tick these essential boxes for you, look no further!

WFP Engineers wearing uniform smiling at camera

Don't just take it from us...

We look after businesses and commercial premises from offices, shops and schools to factories, hotels and care homes…and so much more! Hear from some of our customers who choose us year in, year out to look after their fire, security and electrical needs:

The All-in-One Safety Solution for Your Building

Bring all your fire, security, CCTV and electrical needs under one roof with our comprehensive and tailored ‘All-in-One’ service. It’s smart and it’s simple!

Here’s how you and your business will benefit:

One number to call and one trusted team, whatever the problem!

Full protection from every concern – always safe and legally compliant too

Time and energy efficient – get everything sorted together in one swift visit

The best value for money – monthly payment options and built-in discounts

Less hassle – cut out paperwork with just one contract and renewal for everything

Free 24/7 support – expert advice on the end of the phone, whenever you need it

If you’d like to simplify your systems and reap the benefits, we should talk. Click the button below to send an enquiry and we’ll get back to you as soon as possible!


Serving businesses and commercial buildings within Essex, London and the Home Counties, across East Anglia and the South East of England.

Based in Stock in Essex, we’re perfectly poised to help customers in a wide area, from Suffolk and Norfolk to Cambridgeshire, Hertfordshire and even Central London. 

If you’re a little further afield, try us anyway! You never know where we might go, so get in touch and find out if there’s a chance we could cover your location too.


Contact us today to book your survey or to find out more about how we can help protect your business. Whether you’re looking for a repair, upgrade, installation or maintenance provider, we look forward to showing you what WFP can do. Simply fill out this contact form and we’ll be in touch as soon as possible.

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