Thermapen® ONE

SKU: THS-235-663
With full readings in ONE second or less, Thermapen ONE approaches the speed of thought - allowing you to focus exclusively on the quality of your work. Achieve such speed and accuracy without sacrificing durability and usability.
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PLP Message:
With full readings in ONE second or less, Thermapen ONE approaches the speed of thought - allowing you to focus exclusively on the quality of your work. Achieve such speed and accuracy without sacrificing durability and usability.
PLP Sublist:
Thermapen ONE. Accurate to ±0.5°F in ONE second. Waterproof + advanced features.
TurnTo Average Rating:
4.8
PLP/PDP Message:
With full readings in ONE second or less, Thermapen ONE approaches the speed of thought - allowing you to focus exclusively on the quality of your work. Achieve such speed and accuracy without sacrificing durability and usability.
accessory:
132
accessory:
597
accessory:
221
accessory:
355
accessory:
1229
accessory:
1050
accessory:
116
accessory:
770
Backlight:
With Backlight
Sensor Type:
K Thermocouple
accessory:
1016
NSF:
NSF Approved
accessory:
883
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canada-tks-tools mother's day
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886,1088,355,1229,1108,666,1022,221
Price Message PDP/PLP:
America's Test Kitchen - Winner
Limited Edition Color Closeout - Lavender
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accessory:
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Selected Color is Lavender - Limited Edition
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The Fastest: Full readings in ONE second or Less
The Most Accurate: ±0.5°F (±0.3°C)
The Most Reliable: Designed for the commercial kitchen

ONE. Second. Readings.
Thermapen ONE almost moves at the speed of thought...allowing you to focus exclusively on the quality of your work.

More Accurate
With an improved accuracy spec of ± 0.5°F (± 0.3°C), you’ll know your lightning fast Thermapen ONE readings are always accurate, as well.

Brighter Backlight
The automatic backlight is brighter and the light sensor is more sensitive to changes in ambient lighting conditions.

5-Year Warranty
The newly designed rugged, waterproof case features a 5-year warranty against defects.

With a newly designed battery compartment for easier access to the user settings and all the amazing features you love—auto-rotating display, motion-sensing sleep and wake mode, waterproof to IP67, NIST-traceable calibration certificate—you'll need to get ONE for yourself to understand the power of sub-second performance.

5-year WarrantyNSF CertifiedMade in EnglandNIST TraceablePolygiene Biomaster#1 Rated by Cook's Illustrated and America's Test Kitchen, Read More

1-10 of 2,675 Reviews
Rated 5 out of 5
Jul 18, 2025
Awesome
Industry Standard
Rated 5 out of 5
Jul 18, 2025
Best Instant-Read Thermometer
Exactly as advertised... accurate, easy to use, reliable, and great features.
Rated 5 out of 5
Jul 17, 2025
Awesome
Instant reading? that's why I got it. It works as described!
Awesome.
Rated 4 out of 5
Jul 17, 2025
Just sell a model with the magnet.
I'm sure they have a specific reason for my one gripe about this. That gripe is that this does not have the magnet built into the thermapen.
Mine sits on the side of my fridge or smoker when not in use. I wish the magnet was built in instead of having to buy the sleeve separately.
That said, this does exactly what they say it does. It gives near-instant readings. Though putting a probe from freezing temps to hot meat will take a little longer than a second.
Rated 5 out of 5
Jul 17, 2025
You get what you pay for
Reliable, fast, and accurate. Buy once, cry once. I avoided buying this, due to the price, when I first decided to get an instant thermometer to help when grilling meats. However, the less expensive Th****ro thermometer I did purchase was a disappointment. Within a season it was difficult to switch off and the temps could be a little inconsistent. I have been very happy with performance of the ThermoWorks thermapen one.
Rated 5 out of 5
Jul 17, 2025
Great product
Its easy, fast and accurate
Rated 5 out of 5
Jul 16, 2025
Necessary Tool
This is one of those products that just does its job exactly how it should, time and time again. Open it up, check temp, fold it back. Never have to question it. No buttons to accidentally press. Just a purebred temp checking machine!
Rated 5 out of 5
Jul 16, 2025
Best instant read thermometer I've owned. Easy to use with a simple design without all the clutter. Reads quickly and accurately as advertised. If the need arose I would not hesitate to purchase another one.
Rated 5 out of 5
Jul 16, 2025
Just works perfectly
Rated 5 out of 5
Jul 16, 2025
This is my second one love them
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128 Questions
What are the differences between the "classic" and the "ONE" thermapens?

Thermapen ONE is better than a Classic Thermapen is in many significant ways, the most important being its ability to read temperatures 3 times faster and 30% more accurately than a Classic Thermapen does.

Thermapen ONE was redesigned so it's more comfortable to hold, the battery compartment is much easier to access, and the settings are easier to change. We have such confidence in Thermapen ONE's durability that we have increased its warranty period to 5 years versus Classic Thermapen's 2 years.

Other important Thermapen ONE advantages include:

• If its probe is open, a Thermapen ONE's display automatically wakes up whenever you touch it. When a Classic Thermapen goes to sleep, you must close its probe and reopen it to turn it back on.
• A Thermapen ONE uses 1-AAA battery; a Classic Thermapen uses 2-CR2032 batteries.
• A Thermapen ONE's display automatically rotates so you can read it from any direction; a Classic Thermapen's display does not rotate.
• A Thermapen ONE has a backlight; a Classic Thermapen does not.
• A Thermapen ONE is waterproof to IP67; a Classic Thermapen is splash-proof.

Both Thermapen models come with a NIST-traceable Calibration Certificate.

Is this the best thermometer for candy making, syrups and chocolates?

My husband bought this thermometer a few years back for meats/grilling and smoking. We're getting one for each of our 4 kids for Christmas next year....my yearly candy making for the holidays; near perfection! Peanut brittle, caramels, toffee....no more guess work. Highly recommend -spend the money.

would ideally like one for all purposes if that's possible. When deep frying need constant check of temp. would really like it to clip on or something instead of having to hold it all the time. what do you recommend?

The Thermapen ONE is excellent for taking fast temperature readings, but for monitoring your frying oil temperature, we recommended using a leave-in probe thermometer, like the ChefAlarm, Smoke or any of our other alarm thermometers. A leave-in probe thermometer would be a separate unit, but it would prevent leaving the body of an instant-read thermometer close to a heat source over an extended period. You can find our cooking alarms here:

https://www.thermoworks.com/shop/products/cooking-alarms/

Can the Thermapen ONE be used for bread baking as well as meat?

Yes, it sure can!

How far should the Thermapen be inserted into meat?

Because the sensor is on the very tip of the probe, you only need to insert the probe to the thermal center (the coolest area) of the meat.

Here are some blog articles that demonstrate this principle:

https://blog.thermoworks.com/2016/06/how-to-temp-a-steak/

https://blog.thermoworks.com/2016/10/accurate-probe-placement-in-turkeys/

does the Thermapen ONE work well with rechargeable (NiMH) batteries which typically provide 1.3V, or does it require the 1.5V supplied by a disposable battery?

Im using a NiMH battery and its working just fine, but I've just ordered a set of Lithium AAA batteries which are 1.5v, just like Alkaline batts BUT will last a lot longer than Alkaline and Lithium will not corrode and leak like Alkaline batteries will. It's a Win, win.

Where is this product manufactured? Thank you.

It is manufactured in the United Kingdom. (England)

what is the warranty terms?

The Thermapen ONE carries a five-year warranty and guarantee against defects in either components or workmanship. During this period, products that prove to be defective will, at the discretion of ThermoWorks, be either repaired or replaced, without charge. The Thermapen ONE warranty and guarantee does not cover damage caused by fair wear and tear, abnormal storage conditions, incorrect use, accidental misuse, abuse, neglect, misapplication or modification, or use with non-ThermoWorks hardware/software. No warranty of fitness for a particular purpose is offered and the user assumes the entire risk of using the product.

Any liability by ThermoWorks is limited only to the replacement of defective materials or workmanship, and ThermoWorks accepts no responsibility for consequential loss. In line with our policy of continuous development, we reserve the right to amend our product specifications without prior notice.

This warranty is valid only if the product is purchased from ThermoWorks directly or from an authorized reseller. If you purchase a ThermoWorks product from an unauthorized reseller, you will not receive warranty or technical support.

https://www.thermoworks.com/product-warranty

What is the diameter of the probe?

The Thermapen's probe diameter (both models) is 3.30 mm and reduces to 1.8 mm at the tip.

How does the ONE do while checking temp on a brisket?

Because it is an instant-read thermometer, the Thermapen ONE is great for spot-checking the temperatures of meat, including brisket, particularly at the end of the cook. If you want to continuously monitor temperatures during the entire cook, we would recommend a leave-in alarm thermometer such as DOT, Smoke, Signals, Smoke X, ChefAlarm, or ThermaQ 2.

Thermapen® ONE

$76.30

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