Thermapen® ONE

Rated 4.8 out of 5
Read 2,742 Reviews|131 Questions, 83,431 Answersor
SKU: THS-235-447
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.
Sale Price: $109.00
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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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Thermapen ONE. Accurate to ±0.5°F in ONE second. Waterproof + advanced features.
TurnTo Average Rating:
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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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1050
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Backlight:
With Backlight
Sensor Type:
K Thermocouple
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1016
NSF:
NSF Approved
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883
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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

2,742 Ratings
4.8out of 5 stars
2,742 Ratings

Rated 5 stars by 93% of reviewers

Rated 4 stars by 3% of reviewers

Rated 3 stars by 2% of reviewers

Rated 2 stars by 0% of reviewers

Rated 1 star by 1% of reviewers

1-10 of 2,742 Reviews
Rated 5 out of 5
Aug 12, 2025
Buy ONE.
My thermapen one works as advertised. The Great amount of positive hype in all forms of media are possibly understating the product.
Rated 5 out of 5
Aug 12, 2025
Best instant thermometer
Love this product, easy to use, fast and accurate. Takes all the guess work out of cooking.
Rated 5 out of 5
Aug 11, 2025
Just what I needed!
Just used it for the first time on a griddle. Made 9 hamburgers. The ability to get a temp. Reading in a second or two makes all the difference. You can be really precise on the rare, med or well done for all 9 at the same time. Folding back also protects the probe when not in use. Quality construction. Good purchase for me.
Rated 5 out of 5
Aug 10, 2025
Great Product
Great thermometer , reads temp instantly. Great Buy , no need to guess if meat is ready
Finally at 70 years of age I'm a pro
Rated 5 out of 5
Aug 10, 2025
Excellent product
Great product. Temp registers in seconds compared to what we were using which took quite awhile.
Rated 5 out of 5
Aug 10, 2025
Nice
Very nice. Good work.
Rated 5 out of 5
Aug 10, 2025
Well worth the upgrade to a new Thermapen One
Love my new Thermapen One. Very accurate, and I like that it uses a single AAA battery instead of a harder to find flat button battery my old Thermapen used. I also like that the probe doesn't need to "snap into" the closed position like the old one, with the new one friction is enough to hold it securely in the closed position. Nice changes.
Rated 5 out of 5
Aug 10, 2025
A nice product
A great product, everything I expected of it.
Rated 5 out of 5
Aug 9, 2025
Fast and Right
This has saved more than one meal I've over cooked.
Rated 5 out of 5
Aug 8, 2025
Fast and accurate.
It works as advertised, and I'm happy with my purchase.
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131 Questions
Why did you choose this?

Our daughter loves this thermometer

Fantastic Product - works really well and makes cooking easy.

friends

I love it is

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

$109.00

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