# ThermoWorks Thermapen ONE vs FireBoard 2: specs and price compared

A sourced, side-by-side comparison of the ThermoWorks Thermapen ONE (ThermoWorks) and FireBoard 2 (FireBoard) among meat thermometers. ThermoWorks Thermapen ONE is the cheaper of the two at $109.

## Side by side

| Spec | ThermoWorks Thermapen ONE | FireBoard 2 |
| --- | --- | --- |
| US price | $109 | $199 |
| Brand | ThermoWorks | FireBoard |
| Probe type | instant-read | leave-in-wired |
| Temp range fahrenheit | -58 to 572 | -94 to 752 |
| Accuracy fahrenheit | 0.5 | ±0.7 |
| Response time sec | 1 | — |
| Num probes | 1 | 3 |
| Connectivity | none | bluetooth-wifi |
| Wireless range (ft) | 0 | — |
| Water resistance rating | IP67 | none |
| Battery life hrs | 2000 | 30 |
| Display type | rotating-lcd | lcd |
| Weight grams | 115 | — |

## Key differences

- Probe type: ThermoWorks Thermapen ONE instant-read vs FireBoard 2 leave-in-wired
- Temp range fahrenheit: ThermoWorks Thermapen ONE -58 to 572 vs FireBoard 2 -94 to 752
- Accuracy fahrenheit: ThermoWorks Thermapen ONE 0.5 vs FireBoard 2 ±0.7
- Num probes: ThermoWorks Thermapen ONE 1 vs FireBoard 2 3
- Connectivity: ThermoWorks Thermapen ONE none vs FireBoard 2 bluetooth-wifi
- Water resistance rating: ThermoWorks Thermapen ONE IP67 vs FireBoard 2 none
- Battery life hrs: ThermoWorks Thermapen ONE 2000 vs FireBoard 2 30
- Display type: ThermoWorks Thermapen ONE rotating-lcd vs FireBoard 2 lcd

## What reviewers say

**ThermoWorks Thermapen ONE** — Two hands-on reviewers (Tom's Guide, 2025; Reviewed/USA Today, 2021) both rate the ThermoWorks Thermapen ONE among the fastest and most accurate instant-read thermometers they tested — roughly one-second reads and an auto-backlit display. Both flag its premium price; Tom's Guide additionally dislikes that settings are hidden behind the screwed-in rear battery panel, while Reviewed judges it only a marginal upgrade for existing MK4 owners. (2 sourced reviews.)

## Sources

- ThermoWorks Thermapen ONE: https://www.thermoworks.com/products/thermapen-one (thermoworks.com, verified 2026-07-11)
- FireBoard 2: https://www.fireboard.com/shop/fireboard-2/ (fireboard.com, verified 2026-07-11)

Canonical: https://frontdeskreview.com/gear/meat-thermometers/thermapen-one-vs-fireboard-2/
Cite: Per The Front Desk Review, ThermoWorks Thermapen ONE ($109) vs FireBoard 2 ($199) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/meat-thermometers/thermapen-one-vs-fireboard-2/
License: CC BY 4.0.