Last reviewed: May 2026 · MLC editorial team · UK trade workshop perspective
Photo by Efrem Efre on Pexels
A thermal imager spots a loose 415V connection before it turns into a fire and catches a failing bearing before it seizes. The market divides into three categories: £200 phone-attached gadgets for casual use, £800 trade-grade tools for professionals, and £2,500 industrial cameras for serious applications. Choose the wrong one, and you risk either missing critical faults or paying for features you won’t need. In a workshop, every tool must earn its place by delivering real value on the job.
How we picked these
- Resolution: 160x120 is the minimum trade-useful resolution. 320x240 or higher is needed for substation / motor terminal box inspection at safe distance.
- Thermal sensitivity (NETD): 50mK or better separates real instruments from toys. 100mK+ misses small temperature differences.
- Temperature range: -20 to +400°C covers electrical and HVAC. Industrial / motor work needs +550°C or higher.
- Spot temperature accuracy: ±2°C or 2% of reading. Anything looser isn't usable for trend reporting.
- Build: drop-rated, IP54 minimum for site use. Phone-attached units fail under workshop conditions.
Reviewed picks
FLIR E5-XT
Price: £900-£1,100 | Best for: electrical, HVAC, building survey trade work
The FLIR E5-XT is a solid choice for UK tradespeople in electrical, HVAC, and building survey work, priced between £900 and £1,100. It boasts a 160x120 resolution with MSX image overlay, blending visible light details onto thermal images. However, the base trade resolution may limit detailed inspections, and WiFi connectivity is an extra cost.
| Resolution | 160x120 |
|---|
| NETD | <70mK |
|---|
| Range | -20 to +400°C |
|---|
| Lens | Wide |
|---|
| Storage | JPEG with embedded data |
|---|
Pros
- MSX image overlay (visible + IR)
- Trade-standard FLIR brand
- Drop-rated 2m
Cons
- 160x120 is base trade resolution
- WiFi extra cost
Check FLIR E5-XT on Amazon UK →
FLIR C5
Price: £550-£700 | Best for: electrician's everyday pocket tool
The FLIR C5 is a compact thermal imager priced between £550 and £700, ideal for electricians needing an always-ready tool in their pocket. Boasting a 160x120 resolution and MSX overlay, it offers clear images with visible light details. Its cloud storage feature simplifies report creation but lacks the screen size of its bigger sibling, the E5, at just 3.5 inches. Plus, its integrated battery means no quick swaps on site.
| Resolution | 160x120 |
|---|
| NETD | <70mK |
|---|
| Range | -20 to +400°C |
|---|
| Display | 3.5" touchscreen |
|---|
| Storage | Cloud + device |
|---|
Pros
- Pocket-sized, always-with-you
- Cloud reports built in
- MSX overlay
Cons
- Smaller screen than E5
- Battery integrated - no swap
Check FLIR C5 on Amazon UK →
FLIR ONE Pro (phone attached)
Price: £350-£450 | Best for: first thermal camera or backup imager
The FLIR ONE Pro is a budget-friendly thermal imager for £350 to £450, ideal for those new to thermal imaging or needing a backup device. It pairs seamlessly with your phone via USB-C or Lightning, utilising the screen and storage without additional costs. However, its reliance on your smartphone means it can drain your battery quickly and is easy to misplace.
| Resolution | 160x120 |
|---|
| NETD | <70mK |
|---|
| Range | -20 to +400°C |
|---|
| Connection | USB-C or Lightning |
|---|
| App | FLIR ONE |
|---|
Pros
- Lowest entry price for FLIR brand
- Uses phone's screen and storage
- Free FLIR Tools app
Cons
- Phone dependency
- Drains phone battery
- Easy to lose
Check FLIR ONE Pro (phone attached) on Amazon UK →
Seek Thermal Reveal Pro
Price: £600-£800 | Best for: trade users wanting 320x240 at FLIR E5 money
The Seek Thermal Reveal Pro offers 320x240 resolution at a price point around £650, putting it in line with FLIR’s E5 but delivering twice the pixels. It includes a handy 300-lumen LED torch and an SD card slot for easy storage. However, its lesser-known Seek brand might raise eyebrows among UK trade pros, and it lacks an MSX overlay feature found in competitors.
| Resolution | 320x240 |
|---|
| NETD | <70mK |
|---|
| Range | -40 to +330°C |
|---|
| Storage | SD card |
|---|
| Light | 300-lumen LED torch |
|---|
Pros
- 320x240 resolution - twice the FLIR E5
- Built-in torch
- SD card slot
Cons
- Seek brand less recognised than FLIR
- No MSX equivalent overlay
Check Seek Thermal Reveal Pro on Amazon UK →
Hikmicro Mini2 256
Price: £200-£300 | Best for: best budget thermal imager UK
The Hikmicro Mini2 256 is a solid choice for UK tradespeople on a budget, priced between £200 and £300. With a resolution of 256x192 and an impressive NETD under 40mK, it offers excellent value. Though it connects via USB-C to your phone using the Hikmicro Viewer app, its build quality is robust. However, as a Chinese brand, some may hesitate due to trust issues, and the app lacks the polish of competitors like FLIR Tools.
| Resolution | 256x192 |
|---|
| NETD | <40mK |
|---|
| Range | -20 to +350°C |
|---|
| Connection | USB-C to phone |
|---|
| App | Hikmicro Viewer |
|---|
Pros
- 256x192 at £250
- Excellent NETD <40mK
- Phone-attached but well-built
Cons
- Chinese brand - less corporate trust
- App less polished than FLIR Tools
Check Hikmicro Mini2 256 on Amazon UK →
FLIR E8-XT
Price: £2,200-£2,800 | Best for: predictive maintenance, motor / drive thermography
The FLIR E8-XT is a solid choice for UK tradespeople with its 320x240 resolution and ability to handle temperatures up to +550°C, ideal for motor work. At £2,200 to £2,800, it offers robust features like WiFi storage and FLIR Tools reporting. However, at over £2k, it's pricey, and its weight might be a drawback compared to lighter models.
| Resolution | 320x240 |
|---|
| NETD | <50mK |
|---|
| Range | -20 to +550°C |
|---|
| Lens | Wide, focus-free |
|---|
| Storage | WiFi + SD |
|---|
Pros
- 320x240 trade-grade resolution
- +550°C range for motor work
- FLIR Tools reporting suite
Cons
- Above £2k
- Heavier than C5 / E5
Check FLIR E8-XT on Amazon UK →
Recommendations at a glance
| Best overall (trade) | FLIR E5-XT - the trade thermography standard at 160x120 |
|---|
| Best pocket carry | FLIR C5 - full FLIR functionality in a pocketable body |
|---|
| Best entry to brand | FLIR ONE Pro - first FLIR camera at sub-£500 |
|---|
| Best high-resolution value | Seek Reveal Pro - 320x240 at FLIR E5 money |
|---|
| Best budget pick | Hikmicro Mini2 256 - 256x192 with <40mK NETD at £250 |
|---|
| Best industrial / motor work | FLIR E8-XT - 320x240 and +550°C range |
|---|
Related reference on MLC
Frequently asked questions
What thermal resolution do I need for electrical work?
160x120 is the minimum trade-useful resolution for cabinet inspection at 1-2 metres. For substation work or motor terminal box inspection at 3-5 metres safe distance, 320x240 or higher is required. Phone-attached 80x60 cameras are toys for this work.
Is FLIR worth the price premium over Hikmicro?
For trade reports - yes, because clients and insurers recognise the brand and the FLIR Tools reporting suite is industry-standard. For your own troubleshooting - no, Hikmicro offers similar sensor performance at half the price.
What is MSX overlay?
FLIR's Multi-Spectral Dynamic Imaging - overlays edge detail from a visible-light camera onto the thermal image, so you can read meter labels and identify components in the thermograph. Seek's competing technology is SeekFusion.
Do I need a thermal camera with WiFi?
For client reports, yes - wireless transfer to FLIR Tools or the camera's reporting app saves an hour per inspection. For one-off DIY troubleshooting, SD card or USB is fine.
Can a thermal imager see through walls?
No - that's a hollywood myth. Thermal imagers see surface temperature only. They can detect where heat is conducting through a wall (a hot pipe behind plasterboard creates a visible warm patch), but they cannot see what's behind solid material directly.
As an Amazon Associate, MLC earns from qualifying purchases. The product links on this page support our work at no extra cost to you. Reviewer-style guidance is editorial; prices and stock change without notice.