Our Favorite Instant-Read Thermometer Is 30% Off for a Limited Time

Our Favorite Instant-Read Thermometer Is 30% Off for a Limited Time

Using the Thermapen one to take the temp of roast chicken
Serious Eats / Irvin Lin

Instant-read thermometers are kitchen workhorses: they’re great for precise tasks like making caramel, as well as taking the temperature of steak or poultry (you’ll never have to make an incision to check doneness in your roast chicken ever again). While there are a few good options out there, only one model we tested delivered accurate readings (and in three seconds or less, to boot): the Thermapen ONE

red thermapen one on marble countertop
Serious Eats / Irvin Lin

To buy: Thermapen ONE was $99, now $70 at thermoworks.com

Why it Won Our Review

In our testing, the Thermapen ONE was the fastest and most accurate instant-read thermometer. It read iced and boiling water, as well as a sous vide bath, accurately in three seconds or less. We also loved its backlit, auto-rotating screen, which quickly flipped the display for easy reading no matter the angle. With a hearty IP67 waterproof rating (which means it can be submerged in water for up to 30 minutes) and a 5-year warranty, the Thermapen ONE is a great kitchen investment that’s only downside is its higher price point. But, now that it’s 30% off sale, that road block is gone as well.

Good to Know

  • Features: Backlight display, rotating screen, rubber non-slip grip edge
  • Accuracy: +/- 0.5°F (+/- 0.3°C) from -4° to 248°F (-20° to 120°C)
  • Probe Length: 4.3 inches
  • Measurement Range: -58°F to +572°F
  • Waterproof: IP67 (can be submerged for up to 30 minutes)
  • Battery life: 2000 hours
  • Warranty: 5 years


Is Thermapen ONE worth the money? 

It might be more expensive than other instant-read thermometers, but the Thermapen ONE performed the best in all of our testing, has a high water resistance rating, and comes with a 5-year warranty. Though it may be pricey, we think it’s worth the investment and will last many years of use. Even better, it’s currently on sale

How do you use a Thermapen ONE instant-read thermometer?

The Thermapen ONE turns on when you pull out the probe, and the backlit screen lights up when you rotate the thermometer. To get a good temperature reading, insert the probe into the thickest part of whatever you want to take the temp of, and let it stay there for at least two seconds.

Can I use my Thermapen as a candy thermometer?

Yes—the Thermapen ONE has a maximum temperature limit of 572ºF  and a resolution of 0.5ºF. It’s much more accurate than analog clip-on thermometers, making it easier to hit precise temperatures for complicated recipes, like caramel.