FLIR i7 vs Extech i5 Review

In 2007, Extech Instruments was acquired by Infrared Camera pioneer, FLIR Systems. FLIR is a leading manufacturer of infrared thermography technology that develops tools for Automotive, Building, Military and Electrical industries. FLIR manufacturers its infrared cameras in Sweden, where it produces accurate, high-quality tools. The Extech i5, despite the branding, is also made in Sweden.
Extech i5 Review
Last year, Extech introduced the Extech i5 infrared camera. The Extech i5 is an affordable infrared thermal camera priced at only US$1,595. It features 80×80 IR sensor camera, removable memory card and easy to use design. The Extech i5 has a pistol-grip design and is light weight and easy to carry. (You can read more specifications about this camera in my Extech i5 review later). Although the Extech i5’s 80×80 sensor is typically lower than the 120×120 or 320×240 sensors seen with other thermal imagers in the market, the US$1595 sticker price makes the Extech i5 the market’s most affordable and high value infrared cameras out there. The plus side, its made by FLIR. The downside is the limited temperature range but still it makes for a good non-destructive tool for electrical-related inspection tasks.
FLIR i7 Review
Released after the Extech i5, the FLIR i7 infared camera is one step up. The FLIR i7 is a great tool for home inspections. What sets the FLIR i7 apart from the Extech i5 is its 120×120 sensor which for the most part, besides having the FLIR name, only costs an extra $400 from the Extech i5. The FLIR i7’s sensor is better for detecting things like missing insulation or any inspection tasks that require the need to differentiate greater temperate variances.
Opening the FLIR i7 for the first time, you’ll see that it comes with many accessories. This is also true with the Extech i5. Here’s what you’ll find inside the box hard case:
- 512Mb microSD card
- MiniSD adaptor
- Li-ion rechargeable battery
- AC adaptor / charger
- QuickReport™ software
- USB cable
- Built-in lens protector
- Hard Transportation Case
- Hand strap
- User manual CD in 21 languages
Key Feature Comparison
Thermal imaging is a valuable tool in preventive maintenance of electrical, mechanical and structural systems, able to help detect problems, prevent unscheduled downtime, guide needed corrective action and increase plant safety. In the utility industry, failure is not an option. That’s why infrared thermal imaging has become a key tool for predictive maintenance programs for utility firms everywhere. In addition, energy costs are increasing at a substantially alarming rate. Missing or low quality insulation, inadequate Heating, Ventilation, and Air Conditioning (HVAC) systems, poor air flow — all are typical problems that cause homes to waste energy.
At US$1595 or US$1995, the Extech i5 and FLIR i7 are truly two of the industry’s most affordable, high quality infrared cameras. If you’re an electrician, home inspector or energy auditor, these are two thermal imagers you should consider and definitely have in your tool kit.
Do you like this comparison tool? I do, compare these infrared cameras on ShopExtech.com
If you’re interested in learning more about these two infrared cameras, you can visit ShopExtech.com where you’ll find more detailed specifications and brochures. As well, I’ll be writing posts about FLIR’s T-series, B-series and higher-end i-series infrared cameras, so be sure to subscribe to this blog by email to get updated automatically.


One review commented that the Extech i5 makes a clicking noise several times per minute when in use. I think I would find this annoying.
My question to those who use the i7, does it also make a clicking noise when in use?
Thank you.
MJ
@MJ, I have used the i7, the tiny clicking sound you hear is created from the i7’s focus free feature, or auto-focus feature. Its a feature you’ll find rather something you’ll hear with any digital camera such as a Canon or Sony. The camera is focusing while you move it around. If you hold the camera still, it won’t click.
Hello,
can Flir i7 measure below zero Centigrade, i.e. up to -4 F or does it measure only above 32 F?
Thanks and regards,
DJ
Hi DJ, no, the FLIR i7’s temperature range is only from 0C – 250C. Have a look at the FLIR b40, it has a range that starts at -20C.
ive looked all over the web and cant get a staight answer to a questions i have, ok here it goes: its pertaining the i5 and i7 models what is the definition to hot and cold point detection?
i hear it mention but have no clue what it actualy does, can someone clear this up for me. One more thing do both models have this option ?
Hi,
I have a leak coming out of the wall which is made of bricks and wanted to see the waterflow within the wall to trace the water path. Is the i5 capable to image the brick wall ?
Thanks.
Hi Fyanes,
thank you for your question. The i7 includes the hot/cold spot feature. When selected, the hot/cold spot feature will display the hottest point and the coldest point in an area within what you see on the LCD display. The points will be marked as cross-hairs and may show a temperature value beside them.
Thanks Fyanes, if you have any more questions you can give us a call at 1.877.766.5412,
King
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