Thermoworks Billows: Master the Heat, Perfect the Smoke

The art of charcoal grilling, while yielding unparalleled flavor, often comes with a significant challenge: consistent temperature control. For many enthusiasts, the struggle to maintain that ideal, steady heat throughout a long cook can be daunting. Questions like, “How do I ensure my grill stays at 225°F for 12 hours?” or “What if the temperature suddenly spikes or plummets?” are common refrains. The good news for every aspiring pitmaster and seasoned grill enthusiast is that modern technology has delivered a game-changing solution. Say goodbye to constant vent adjustments and thermometer hovering, because the Thermoworks Billows Temperature Controller is here to revolutionize your charcoal grilling experience.

The Power of Precision: Introducing the Thermoworks Billows

When it comes to accuracy and reliability in temperature measurement, Thermoworks stands as an undisputed industry leader. Their reputation for producing top-tier instruments extends across professional kitchens, laboratories, and, of course, the world of outdoor cooking. Many discerning chefs and home cooks alike trust Thermoworks for critical temperature monitoring tasks. Their acclaimed products include the lightning-fast and exceptionally accurate Thermapen Mk4 instant-read thermometer, an essential tool for perfect doneness. For those requiring continuous monitoring, devices like the Thermoworks Smoke and Signals have become staples, allowing pitmasters to track internal meat temperatures and grill ambient temperatures without lifting the lid.

Given their established dominance in temperature monitoring, it was a logical and exciting progression for Thermoworks to venture into the realm of active temperature control. This expansion culminated in the release of the Thermoworks Billows. Thermoworks generously provided me with a Billows unit for an in-depth review and rigorous testing, allowing me to explore its capabilities firsthand. Let’s delve into how this innovative device performs and transforms the charcoal grilling process.

Unboxing and Initial Setup: Getting Started with the Billows and Signals Duo

The Billows unit itself is an intelligently designed fan, engineered to meticulously regulate the airflow to your charcoal grill. However, it’s crucial to understand that the Billows doesn’t operate autonomously; it requires an external controller to function effectively. At present, its sole compatible partner is the Thermoworks Signals, a versatile 4-channel temperature monitoring device. This compatibility factor is vital for potential buyers to consider, as the Billows unit retails for $59.99, while the indispensable Signals controller comes in at $229.99. This brings the total investment to $289.98 for the complete system. While this combined price point is competitive with other advanced temperature control systems on the market, a significant advantage here is that you acquire the highly capable Signals controller, which offers robust standalone temperature monitoring capabilities even when not paired with the Billows.

thermoworks billows and signals
Billows and Signals, ready for action.

Constructed from durable hard plastic, the Billows unit is designed for effortless integration with your charcoal grill’s air intake system. For instance, if you’re a proud owner of a Big Green Egg, the Billows simply clips securely onto the bottom air vent. Connection to the Signals controller is facilitated by a custom-designed, supplied cable, ensuring a robust and reliable link. To power the fan, the Signals controller must be plugged into a standard wall outlet using its dedicated power adapter. This wired power requirement is a common characteristic among similar high-performance temperature control devices currently available, ensuring consistent power delivery for optimal fan operation.

thermoworks billows plugged in
Billows precisely connected to the Big Green Egg’s air intake.

The Signals controller itself is bundled with a high-accuracy grill grate temperature probe. This probe conveniently clips onto your cooking grate and plugs directly into one of the Signals’ channels. With the Billows securely attached to your grill, the Signals controller powered on, and the grate probe positioned, your entire system is primed for operation. There are no convoluted pairing procedures or additional software configurations required for the Billows to communicate with the Signals controller; the fan is automatically recognized the moment it’s connected via the custom cable. From this point, you can effortlessly set your desired cooking temperature using the intuitive buttons on the Signals controller. The Billows will then intelligently adjust its fan speed – increasing airflow to raise the temperature or reducing it to allow the temperature to stabilize – all based on the real-time readings from the grate temperature probe, ensuring your charcoal grill maintains your target temperature with remarkable precision.

thermoworks billows fan
A closer look at the powerful fan on the backside of the Billows.

Seamless Connectivity: Mastering Your Grill from Anywhere

While operating and setting the temperature directly from the Signals device is exceptionally user-friendly, Thermoworks takes convenience a step further with its sophisticated mobile application. This free app, readily available for both Apple iOS and Android devices, unlocks a world of remote control and monitoring capabilities for your grill.

The app requires only a single, straightforward setup process to connect with your Signals device. You have the flexibility of establishing either a Wi-Fi or a Bluetooth connection. The inclusion of both connectivity options is a significant advantage, offering versatility whether you’re grilling in your backyard or taking your setup on the road for catering events or tailgating. The app’s interface is remarkably intuitive, not only displaying the current grate temperature and your set target temperature but also providing real-time readings from the other three probes that accompany the Signals controller. As a 4-channel controller, the Signals dedicates one channel to monitoring the crucial grate temperature, while the remaining three channels are available for tracking the internal temperature of up to three different cuts of meat you might be cooking simultaneously. This multi-channel capability is invaluable for complex cooks, allowing you to perfect each item.

Once connected, you gain full command over your grill’s temperature settings directly from your smartphone. Beyond simply setting the target temperature, you can also configure high and low-temperature alarms. Imagine the peace of mind knowing that if your charcoal supply dwindles, causing the temperature to drop, or if a sudden flare-up causes an unwanted spike, the app will instantly notify you. This feature is a true lifesaver, particularly during marathon low-and-slow smoking sessions for dishes like brisket or pork shoulder, where cooking times can easily exceed 12 hours. Remote monitoring means you’re no longer tethered to your grill, granting you the freedom to relax, socialize, or even sleep, confident that your BBQ is in expert hands.

Putting it to the Test: Real-World Performance and Grilling Experience

My recent opportunity to extensively test the Billows unit on my Big Green Egg provided invaluable insights into its real-world performance. Through several diverse cooks, I was able to assess its capabilities and limitations. Here are my observations.

The Unrivaled Advantages

The ease of the setup and installation process truly impressed me. Clipping the Billows unit onto the Big Green Egg’s air intake and connecting it to the Signals controller was incredibly straightforward. The same simplicity applied to positioning the grate temperature probe and setting my desired temperature. The clear, concise instructions ensured a hassle-free experience from start to finish.

Pairing the Signals controller with my smartphone was equally effortless. Following the provided guide, my iPhone X was connected and communicating with the Signals in mere moments. The accompanying app itself boasts an exceptionally user-friendly interface, making remote temperature adjustments and monitoring an absolute breeze. The intuitive design means less time fiddling with settings and more time enjoying your cook.

Once installed and connected, the Billows fan sprang to life automatically, working diligently to bring the grill up to my preset temperature. A noticeable advantage was the significantly reduced warm-up time compared to manual methods. This is an expected benefit, as the forced airflow from the Billows efficiently stokes the coals, getting your grill to temp faster and saving valuable time and charcoal.

Thermoworks confidently states that the Billows will maintain your grill temperature within 10 degrees of your set point, and my testing confirmed this accuracy. During my initial cook, I aimed for 275°F, and the temperature consistently held within a tight range of 7-8 degrees, never fluctuating beyond that. This level of precision is paramount for successful low-and-slow cooking, ensuring even heat distribution, consistent doneness, and perfect bark formation on smoked meats. This unwavering stability significantly reduces the risk of overcooking or drying out your food.

It’s important to remember that these advanced temperature controllers are primarily designed for low and slow cooking, specifically indirect heat applications. I would advise against using the Billows to maintain extremely high grilling temperatures, such as 500°F or 600°F. Such intense heat could potentially damage the delicate grate temperature sensor, and the fan might struggle to supply sufficient air to sustain those scorching temperatures, which are typically achieved with wide-open vents.

Areas for Enhancement

The most significant limitation of the Billows and Signals combination is its absolute requirement to be plugged into a wall outlet for operation. While the Signals controller can function independently using its internal battery, connecting the Billows instantly necessitates external power. This is understandable, as the fan requires a consistent power supply to operate effectively. However, the absence of an integrated battery pack for the Billows or compatibility with external portable power solutions (beyond a standard wall outlet) limits its portability for off-grid grilling, remote camping trips, or tailgating scenarios where an electrical outlet might not be readily accessible. The addition of an optional, robust external battery pack accessory would greatly enhance its versatility.

Another point to consider is the exclusive compatibility of the Billows with only the Signals controller. While the Signals is an exceptional 4-channel unit, not every user may require its full complement of features. For those who already own or prefer the less expensive Smoke controller, which offers 2 channels, the need to purchase the Signals specifically for Billows compatibility adds to the overall cost. Extending Billows compatibility to the Smoke controller, perhaps with reduced channel functionality, would offer a more budget-friendly entry point for some users.

thermoworks signals
The indispensable Signals controller, the brain behind the Billows.

Is the Thermoworks Billows for You? Final Verdict and Investment Insight

In conclusion, my experience with the Billows unit was overwhelmingly positive. It profoundly simplifies the charcoal grilling process, making the art of maintaining consistent temperatures accessible to everyone, from novice grillers taking their first steps into smoking to seasoned pitmasters seeking effortless precision. The Billows truly offers the best of both worlds: the unmatched flavor profile that only charcoal can deliver, combined with the modern convenience of automatic temperature control and seamless mobile connectivity.

The Signals controller unit, while representing a significant investment, fully justifies its price tag through its robust feature set. With 4-channel monitoring, versatile Wi-Fi and Bluetooth connectivity, and its crucial role in controlling the Billows, it’s an invaluable tool for any serious BBQ enthusiast. The combined system alleviates the stress and constant monitoring traditionally associated with charcoal cooking, allowing you to focus on other aspects of your gathering or simply enjoy the process.

If you’re ready to elevate your charcoal grilling game, achieve unprecedented temperature stability, and enjoy perfectly cooked results every time, the Thermoworks Billows and Signals duo is a worthy investment. To explore the Billows unit in more detail, click here to visit the Thermoworks website. For comprehensive information on the powerful Signals controller, you can find it here.

thermoworks billows and signals
The complete Thermoworks Billows and Signals system, ready to transform your BBQ.

For additional product evaluations and insights into the latest grilling gear, don’t forget to check out our dedicated Review page.