








Klein Tools ET05 is a digital thermometer that takes ambient and direct-contact readings in both Fahrenheit (F) and Celsius (C) scales. The rugged, portable design makes it the choice of HVAC field service teams. The protective sheath cleverly serves as a handle to extend reach. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn’t just the name of our company, it’s also our family name. And since we’re an American company that’s family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn’t just make great products, we make great products that stand up to the demands of the professionals who use them every day … Since 1857.
TEMPERATURE SELECTION: User selectable Fahrenheit and Celsius measurements for convenience and versatility
WIDE MEASUREMENT RANGE: Measurement range of -40 to 482°F (-40 to 250°C) with room temperature accuracy of +/- 27°F (+/- 15°C)
BACKLIT DISPLAY: Backlit display allows for easy viewing in low-light environments
ADVANCED FUNCTIONS: Max/Min, Hold, and Average functions provide additional data analysis capabilities
NON-MEDICAL DEVICE: Not intended for use on people or animals, complying with regulations and maintaining clear distinction from medical devices
13 reviews for Klein Tools ET05 Digital Pocket Thermometer, HVAC Instant Read Thermometer with Backlit Display, Wide Measurement Range, Fahrenheit and Celsius
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$15.00

Robin Williams –
Very Handy and versatile!
I got this for a HVAC tool, but it also puts my meat thermometer to shame! It also checks room temps. Love the light. Very fair price and super fast and easy to use.
Jerimia –
Works Perfect
The thermometer works exactly as it says it should. It is super responsive, the battery lasts forever on it and for how small it is. It is absolutely perfect for my home inspections. Never had an issue with accuracy, just all around solid product.
Hank –
Klein is the last word in everything they do.
Any Klein tool is the best in class. It shows the temperature immediately and is extremely accurate. Obviously the best choice when buying a thermometer. Strongly recommended. It is also a good value. It is highly readable and very durable. The quality is very high. A great fit for any job.
HG –
When in doubt, change the battery
almost gave this thermometer a bad review because it arrived with a low battery, but once I replaced it, it worked perfectly. I just clip it onto the AC vent and turn it on whenever I need to check the temperature. It’s fairly accurate when compared to my other thermometers—maybe a degree or two off, but still good enough.Another plus is how quickly it reads the temperature, which is definitely an advantage.
Swar –
Fast response
Needed to measure the temperature of the intake and exhaust ports of my hybrid water heater to check if the compressor was functioning properly. Worked quickly to show temperatures and that the compressor wasn’t working.
hastin –
Amazing quality
Just received and you can immediately tell that it is a high quality tool. I’m excited to start using it. Worth the extra cost compared to a cheaper one, even if the accuracy is the same, its nice to have a quality built tool.
Bill TOG –
Great for home owners NOT so for professionals.
Kline Quality and price.It’s for a home owner not a tech as I oncewas. Lots of nice features but it’s way to slow in display readings for a professional were time is money.Also no magnet to hold it in place checking HVAC temps. Batteries are expensive to replace LR44.Why did you pick this product vs others?:Price and quick shipping.
Nikki –
works well
works well. great quality
Ghulam Jillani –
Because this device digit not show properly
NV –
Pero preciso y se le ve que puede ir al bolsillo o caja con otras herramientas que no muere de contacto
RENE A MADRIGAL U –
Excelente termómetro para lecturas de salida de aire en autos y minisplits por ejemplo
Amazon Customer –
Probably the best thermometer for checking supply and return air temperature. Would recommend
ian hatch –
Been using this for a short period ( 2 weeks I think ) and so far its impressed me. I swapped it out for my works calibrated Regin unit which costs £240, that seems to be plagued with issues regarding with water ingress around where the probes are plugged in.The Klein so far has out performed the Regin despite the cost difference. There seems to be many complaints about the belt/pocket clip, mine has been in/out of my pocket dozens of times without issue. Maybe I’m a bit more careful clipping it, but it’s been fine and I’ve had it in my pocket permanently during the 2 weeks. It’s a fraction of the size/weight of my other unit, now I carry this and a Klein 11 in 1 screwdriver which has transformed my 6 monthly temperature testing of TMV valves.I first spotted it approx 2 years ago, I wish I’d bought it sooner…………