9 Best Thermal Imaging Cameras of 2023

Thermal imaging cameras used to be reserved for military and specialist business operations.

If a consumer like you or I wanted to get our hands on one, we’d be shelling out thousands.

Not so today. Rapid advances have made the costs of manufacturing the technology fall, and these thermal cameras are now available to everyone at more affordable price points.

You might be wondering what you might need a thermal imaging camera for.

Personally, I use mine every month or so when trying to diagnose a problem in our home or under my car.

It’s also a fun tool to play with when playing hide and seek with my grandson in the dark!

I’ll give you more examples of fun ways you can use a thermal imaging camera later in the article.

But suffice it to say, they can be used in specific occupations, for educational purposes, and are a useful tool to have around the home.

For now, let’s look at some of the best thermal imaging cameras on the market right now.

What is the Best Thermal Imaging Camera in 2023?

Image	Product	Features
	FLIR TG267BEST OVERALL	Temperature Readings Dust And Water Resistant 160 × 120 IR Pixel Imager Uncooled Microbolometer	Check AMAZON Price → Check B&H Price →
	Seek Thermal Reveal ProBEST MID-RANGE HANDHELD	320 x 240 Thermal Sensor Durable Rubberized Casing Large Color Display High Resolution	Check AMAZON Price →
	Hti-Xintai HT-18BEST BUDGET	3 GB Built-in Memory Card Lightweight 5 Palettes High Resolution	Check AMAZON Price →
	Seek Thermal Compact ProBEST FOR iPHONE/ANDROID	320 x 240 Thermal Sensor Does Not Require Batteries Or Charging Highly versatile High Resolution	Check AMAZON Price →
	FLIR Scout TK CompactBEST FOR HUNTING	Submersible & Impact Resistant Eight Color Palettes Record & Upload Video and Photos 5 Hours of Runtime	Check AMAZON Price → Check B&H Price →
	FLIR One Gen 3BEST VALUE	Measure Temperature Variances MSX Technology Free FLIR ONE Mobile App Lightweight	Check AMAZON Price →
	BOSCH GTC400CBEST FOR PRO'S	Fast Thermal Operation Large Color Display Integrated Camera Stores Up To 500 Images	Check AMAZON Price →
	FLIR One Pro	Detects Temps From -4°F to 248°F Withstands Drops From 5.9' Add Thermal Imaging to Your Phone Save as Stills, Video, or Time Lapse	Check AMAZON Price → Check B&H Price →
	Klein Tools TI250	High And Low Temperature Alarms Store And Share Images Adjustable Emissivity From 0.01 To 1.00 Over 10,000 Pixels	Check AMAZON Price →

 

FLIR TG267 (Best Overall)

The FLIR TG267 is a great, no-nonsense thermal imaging camera that’s easy to configure and can be used straight out of the box.

The camera enclosure is IP54 rated, protected from dust and water, and can withstand a drop of 2m and temperatures ranging from -25 degrees C to 380 degrees C.

FLIR’s own MSX technology superimposes a digital image over the thermal one to give you exceptional image clarity on its 2.4-inch LCD screen.

 

And you can store up to 50,000 images on the device if you need to, images that can also be transferred to your computer either wirelessly or using a USB-C cable.

This thermal camera has a laser bullseye that helps you pinpoint exactly what you want a reading of. Not only that, it comes with a thermocouple probe for more accurate readings when checking heating, ventilation, or air conditioning systems.

• Best Body Cameras (for Personal or Professional Use)

Seek Thermal Reveal Pro (Best Mid-Range Handheld)

This tiny thermal powerhouse is a stunning upgrade on the previous model, with a level of image resolution and features unmatched by anything at this price point.

The old version had about 30,000 pixels to work with, but the Reveal Pro has over 77,000. This creates a huge leap in image quality.

Not only that, an upgraded sensor means a higher frame rate and smoother footage, which is especially useful if you are tracking moving targets.

 

It’s compact, rugged, and has a curved, rubberized body for a comfortable grip. It has a built-in 300 lumens flashlight, and internal memory for up to 13,000 images.

As for features, they’re pretty sophisticated, and I’ll give one example: In Span + Level mode you can filter out specific temperatures to isolate areas of interest.

While it’s beyond the scope of this guide to go into more detail about the range of thermal imaging features this camera provides, suffice it to say, it’s hard to think of any situations it wouldn’t deal with.

Hti-Xintai HT-18 (Best Budget)

This compact, chargeable, handheld thermal imaging camera is a good option for those not wanting to break the bank.

It has two cameras, a visible light camera and a thermal imaging camera. You can change how much of the thermal image overlays the visible light image in increments.

It’s also possible to slightly offset the two images, which could be quite helpful to pinpoint the source of, for example, a heat leak you’re researching.

Despite its low price, the Hti-Xintai HT-18 still has a good range of sophisticated features you’d expect to find on more expensive thermal cameras.

For example, you can set your colour palette, and custom set the emissivity rating (useful if you’re using the device on different surfaces).

Seek Thermal Compact Pro (Best for iPhone/Android)

This is an interesting little device. Unlike other visible light cameras in this guide, there’s no need to charge it as it’s powered by a mini-USB-C connection from your phone.

At this price point, it has one of the highest thermal imaging resolutions (320 x 240) on the market. It also has the functionality to make some of those important thermal adjustments, like emissivity and span + level.

 

Something to note before purchasing, though, is that you might need an adaptor to use it, depending on the thickness of your phone and whether or not you use a phone protector.

Also, it’s on sale right now at Thermal.com, so you can save 20% off the normal retail price.

FLIR Scout TK Compact (Best for Hunting)

The FLIR Scout TK Compact is a pocket-sized thermal monocular that can be used to track animals up to 100 yards away.

That animal could be your pet in the garden after dark, game you’re hunting in the great outdoors, or game that you’ve already hunted and now need to find and harvest.

It’s also popular as a handy way to see your opponent when playing paintball in the dark.

In fact, thermal cameras have been used by the US Military and Police forces for years. Check the video below to see how it actually goes beyond the capabilities of night vision.

 

As you’d expect from something made for the outdoors, it has a sleek but rugged build.

Its housing is rated IP 67, so dust- and waterproof for up to 30 minutes. And the rubber moulded coating makes it both comfortable to hold and shock resistant up to around 2 metres.

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FLIR One Gen 3 (Best Value)

Similar to the Seek Thermal Compact Pro, this is one of the daintier imaging cameras out there, made to attach to your phone.

Unlike the Seek camera, there’s no need for an adaptor to fit it to your phone if you have a fat one or a thick protector; a thumbwheel adjusts the length of the micro-USB-C.

 

It has two cameras, a visible light camera and a thermal camera. The visible light camera’s high pass filter provides a constant outline beneath the thermal image, so you always know exactly what you’re looking at.

The app is easy to use and, with it, you can make the kind of adjustments – emissivity, palette – that will help you get the most out of it.

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BOSCH GTC400C (Best for Pros)

The BOSCH GTC400C is a professional piece of equipment with a price tag to match.

Most home users won’t need it, but if this is the kind of thing you need at work, it will have all the features to carry out the job.

Its ergonomic design makes it easy to hold for long periods, and the large screen is easy on the eyes.

It measures temperature extremely quickly and displays them in a three-crosshair system. One crosshair is fixed in the centre of the image, and the other two float, focusing on the hottest and coldest objects on the screen.

You then have the full range of features – emissivity, transparency settings, palette selection, and more – to help you fine-tune the thermal camera’s output to your needs.

Files can be transferred wirelessly to your phone, or by USB-C cable to your computer.

Once on your computer, you can use BOSCH’s powerful GTC Transfer Software to create and annotate detailed visual reports.

Pro tip: the BOSCH GTC400C’s Lithium-ion battery compartment is the same as for BOSCH power tools, they’re interchangeable. So, if you’re travelling with a toolkit, it’s an easy way to have backup batteries around.

• Best Rearview Backup Cameras

FLIR One Pro

Another FLIR option that will attach to your phone.

It’s virtually identical in build, features, and operation to the cheaper FLIR One Gen 3, but there are some important differences.

The FLIR One Gen 3 can detect temperatures of between -20 and 120 degrees C, and has less thermal sensitivity (150 mK), whereas the FLIR One Pro can detect temperatures of between -20 and 400 degrees C, and has greater thermal sensitivity (70 mK).

 

The thermal resolution on the FLIR One Pro is double that of its cheaper sibling, which means much higher image quality. The FLIR One Pro also has an internal battery, so you can use it for much longer.

Klein Tools TI250

This bright orange tool has 10,000 pixels of resolution and can measure temperatures from -40 to 250 degrees C.

It’s covered in rubberized heavy-duty plastic moulding for protection, and at just over 3 inches in both width and length, it’s compact enough for a tool kit.

There’s nothing new here when compared to the other cameras in this guide, but there doesn’t need to be. It has all the features you need, such as adjustable emissivity and colour palette, from a thermal imaging camera at this price point.

Images are stored on a micro SD card, and can easily be downloaded to your computer.

What Is a Thermal Imaging Camera Used for?

 

They’re used in professional environments by field technicians, firefighters, and soldiers.

In the home, they’re useful for finding electrical faults, water leakage, locating studs or ceiling joists, security and home defence, and even finding dog poo when your pet has done their business in the dark!

In an educational context, they can be used for fun things like drawing with heat or mixing hot and cold water to see where the currents go.

10 Fun Uses for Thermal Cameras

Here are 10 fun uses for a thermal imaging camera you might not have already thought of:

1. Stargazing: They can be used for amateur astronomy to observe celestial bodies, especially during nights when the sky is filled with clouds.
2. Ghost Hunting: Some people use thermal imaging cameras during ghost-hunting adventures. They hope to detect unusual cold spots that might indicate a spectral presence.
3. Cooking: They can be used to check the heat distribution on a grill or pan to find the perfect cooking spot, or to see if the cake is evenly cooked.
4. Gardening: Use a thermal imaging camera to spot pests or disease in your plants. Insects and disease can affect the temperature of plants, making them visible on thermal images.
5. Wildlife Spotting: If you like nighttime adventures, a thermal imaging camera can help you spot animals in the dark.
6. Art: Some artists use them to create unique artwork based on heat patterns.
7. Exploring Caves: Thermal imaging cameras can help you navigate in dark caves and also help spot small animals hiding in the crevices.
8. Bird Nest Spotting: You can use a thermal camera to locate bird nests without disturbing the surroundings.
9. Fishing: Thermal cameras can be used to spot areas in a body of water where fish may be schooling.
10. Finding Lost Pets: If your pet is hiding or lost at night, a thermal camera can help locate them by their heat signature.

How to Choose the Right Thermal Imaging Camera

As you can see from this guide, there are several levels of camera, some for pros, some that are best for hunting, and some that can be used with a mobile phone.

When you’re choosing a thermal imaging camera, here are the criteria to think about:

1. Resolution: This is one of the most important factors. The resolution of a thermal camera is stated in pixels. The higher the resolution, the better and more detailed the image quality. A low-resolution thermal camera may not capture the necessary detail for some uses.
2. Sensitivity: Thermal sensitivity determines how small a temperature difference the camera can detect. A high thermal sensitivity allows you to detect smaller temperature differences, which could be crucial in applications like leak detection or insulation efficiency analysis.
3. Temperature Range: The temperature range that the thermal camera can detect is crucial. If you’re working in extreme conditions, you’ll need a camera that can handle these temperatures.
4. Field of View: Depending on your requirements, you may need a wide or narrow field of view (FOV). A wide FOV is beneficial for scanning large areas quickly, while a narrow FOV allows for more detail over longer distances.
5. Refresh Rate: The refresh rate of a thermal camera determines how many images it can process per second. A higher refresh rate can give a smoother image, especially when you’re scanning a scene quickly or tracking a moving object.
6. Ease of Use: A user-friendly interface can save time and make the camera easier to operate. Check the software and consider if you prefer a camera that is stand-alone or one that requires a smartphone or tablet to operate.
7. Durability: Depending on your working conditions, you may need a thermal imaging camera that’s water-resistant, dust-proof, or able to survive a fall.
8. Extra Features: Other features such as Wi-Fi connectivity, integrated visual camera, image fusion (overlay of thermal and visual image), video recording, and adjustability of emissivity can be useful depending on your specific needs.
9. Price: The cost of the camera can vary significantly, with professional-grade cameras costing significantly more than entry-level models. Consider your budget and the features you need to find a camera that offers the best value for your money.
10. Support and Warranty: Look at the warranty period and the manufacturer’s reputation for customer support. Having access to software updates, customer service, and potential repairs can be very helpful.

How Do Thermal Imaging Cameras Work?

A thermal imaging camera is a special camera that lets you see heat. Just like we see light with our eyes, this camera can see heat, which we normally can’t see.

The way it works is pretty cool. When you point it at something, it catches the heat coming off that thing. The camera’s lens focuses this heat onto a special sensor inside.

Each tiny part of that sensor measures the heat it catches, and assigns a color to it. So, different temperatures get different colors. This creates a picture made up of colors showing how hot or cold everything is.

The camera then takes this information and turns it into an image you can see on a screen. This picture is usually bright in hot areas and dark in cool areas, giving you a ‘heat map’.

Lastly, the camera can even tell you the exact temperature in different parts of the image. It can help you find particularly hot or cold spots.

Remember, not all thermal cameras are the same. Some can see heat better than others and make clearer pictures. The better ones might be more expensive though.

What’s Infrared Radiation and why is it important to thermal images?

Infrared radiation is actually a big part of how thermal cameras work.

It’s a kind of energy that we can’t see with our eyes, but we can feel it as heat.

Every object that’s not super, super cold gives off some infrared radiation. The hotter the object, the more infrared radiation it gives off.

This is where the thermal camera comes in. It’s like it has superpowers because it can see this invisible infrared radiation.

When you point the camera at something, it catches the infrared radiation coming from that object. It’s a bit like catching a ball, but instead of a ball, it’s catching heat energy.

Once the camera has caught this infrared radiation, it measures how much heat there is and then shows it as a picture.

The camera uses different colors to show different amounts of heat, making it easy for us to understand.

So, in short, without infrared radiation, thermal cameras wouldn’t work. They’re specially designed to see this invisible heat energy that every object gives off.

• Learn more about infrared photography

What Are Some Common Uses for a Thermal Camera?

A thermal camera can be super useful in lots of ways. Let’s look at some of them:

People who inspect buildings use these cameras a lot. By looking at thermal images, they can spot where heat is leaking from a house or if there’s a spot that’s cooler than it should be. This can show if the house’s insulation is not working well, or if there’s a damp spot.

Electricians and mechanics also use thermal imaging devices. If a machine or electrical system is overheating, that could be a sign of a problem. The camera can help them spot the issue before it gets worse.

Police and firefighters find thermal imagers handy, too. Firefighters can see through smoke with them, which helps them find people faster in emergencies. Police use them to find people hiding in the dark, because the heat a person gives off is easy to see with the camera.

Doctors sometimes use thermal cameras to check blood flow in the body. If an area is hotter than normal, it might mean more blood is flowing there, which can help find problems.

Lastly, these cameras are great for watching animals, especially at night. The camera can easily spot the heat animals give off, even when it’s too dark to see them with regular cameras.

How do you ‘Read’ an Infrared Image?

Reading an infrared image, or a thermal image, is like looking at a picture made up of different colors that show how hot or cold things are.

In the image, each color represents a different temperature.

Hot things are usually shown in bright colors like red, orange, or white. Cold things are shown in cool colors like blue, green, or black.

Things that are in between hot and cold would be shown in colors like yellow or light green.

So when you look at a thermal image, you’re really looking at a map of temperatures.

Let’s say you’re looking at a thermal image of a dog. You might see its nose in blue because it’s cooler, and its body in red because it’s warmer.

Sometimes, thermal cameras will show a scale on the side of the image. This scale will tell you which colors represent which temperatures, so you know exactly how hot or cold things are.

Reading a thermal image can take a bit of practice, but once you get the hang of it, it’s pretty cool to see the world in a whole new way.

All the best thermal cameras mentioned in this guide create infrared images to show hot and cold spots.

Thermal Imaging Cameras: FAQs

Can I use my phone as a thermal camera?

Yes, you can. Several thermal imaging cameras in this guide plug directly into both Android and iOS smartphones.

What is the difference between an infrared camera and a thermal camera?

They are different ways of saying the same thing. A thermal camera reads the light you cannot see. That light is infrared, which radiates from the surface of any material. The warmer that material is, the more infrared it radiates. Each pixel of a thermal camera is an infrared temperature sensor, so you get the temperature of thousands of points at the same time.

A thermal camera uses an infrared sensor, so it is an infrared camera.

What is the best thermal camera for house inspection?

If you’re doing this as a job, you’ll probably want to get the BOSCH GTC400C. For homeowners, one that attaches to your phone is probably enough.

So, FLIR One Pro, the FLIR One Gen 3, or the Seek Thermal Compact Pro.

What is the highest-resolution thermal camera?

Out of the cameras in this guide, the Seek Thermal Reveal Pro, and the Seek Thermal Compact Pro, at 320 x 240 have the highest resolutions.

But bear in mind, resolution is not the only important metric to consider when buying a thermal imaging camera. You also need to take into account the camera’s thermal sensitivity and frame rate.

Can a thermal imaging camera detect water leaks?

Yes, it can.

What is the best thermal camera for firefighting?

The FLIR K55 (not in this guide) is made specifically for this purpose, but it’s pricey. Otherwise, a good, cheaper option would probably be the Seek Reveal Pro.

What is multi spectral dynamic imaging?

It combines the thermal image with a regular, visible light image to create a detailed picture that’s much easier to understand. It takes the detail from the visible light picture and overlays it onto the thermal image. This means you can see both the heat and all the fine details in the same picture.

Final Words

There you go. Thermal cameras for everyone, every use, and for every budget.

I hope this guide has given you some pointers as to whether you need one and, if you do, which one would be the best fit.