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Brand guide

Thermapen ONE Meat Thermometer and Current Range

Thermapen ONE is the established one-second all-rounder; NANO emphasizes faster sampling and magnets, while Thermapen IR adds surface measurement.

GGearjury editorial team · Updated October 15, 2026· 5 min
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Brand overview

The Thermapen range centers on folding Type K thermocouple instruments for quick internal readings. The current US lineup gives you a conventional premium instant-read model, a newer speed-focused model with magnets, and a hybrid probe-plus-infrared tool; older MK4 and Classic searches may refer to discontinued generations.

Models at a glance

Compare them side by side

ThermoWorks Thermapen ONEOfficial manufacturer imageThermoWorks Thermapen ONEThermoWorks Thermapen NANOOfficial manufacturer imageThermoWorks Thermapen NANOThermoWorks Thermapen IROfficial manufacturer imageThermoWorks Thermapen IR
Published response1 second0.4 seconds2–3 seconds probe; 1 second IR
Internal accuracy in core range±0.5°F±0.5°F±0.7°F
Internal range-58 to 572°F-58 to 572°F-58 to 572°F
Ingress ratingIP67IP67IP54
Surface infrared——Yes, 5:1 optics
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