The Primo Plus/Smartfire
Temperature Controller


The item(s) contained in this review were purchased by The Naked Whiz Publishing Empire on the open market. No considerations, financial or otherwise, were solicited or received from Primo Ceramic Grills or Smartfire BBQ.


Introduction

A little over a year ago, Primo Ceramic Cookers brought out the Primo Plus temperature controller. We thought it was time we got around to reviewing it, so we purchased one and here we go:

We initially thought we'd be doing a review of the brand new Primo Plus temperature controller. We downloaded the Primo Grill Life App and began the setup process when the App asked us if we wanted to "Open The Guide". We said "yes" and lo and behold, a browser window opened up displaying the Smartfire website. Closer examination of the photos of the Primo Plus and the Smartfire showed that yes indeed, the Primo Plus is nothing more than a rebadged Smartfire, much like the EggGenius is, for the most part, a rebadged Flame Boss 400. Needless to say, when we started this review, we visited the Primo website looking for information. Sadly, there isn't a lot of information available. The Smartfire website is more helpful and you may wish to look there for information. But hopefully we will be able to figure it all out for you!

So, what Primo/Smartfire has done is bring out an economy barbecue temperature controller. What makes these controllers "economy" is that they have no display or keyboard. All interaction with the controller is done remotely via an App running on a smart device, taking the notion of a Cloud connected device to its limits. So let's see how this unit performs!


Primo Plus Versus Smartfire

So, as we have already pointed out, the Primo Plus is a rebadged Smartfire BBQ Controller 5.0. But are there any differences you need to know about? Yes, but only minor differences:

  • The Primo Plus color is different than the Smartfire units.
  • The Primo Grill Life App is essentially the same App as the Smartfire App. However, there will usually be about a one week delay between the release of a new version of the Smartfire App and a new version of the Primo Grill Life App.
  • The Primo Plus comes with only 2 food temperature probes versus 3 for the Smartfire. Also, the Primo Plus does not come with any cable organizers while the Smartfire does.
  • The Primo Plus does not come with a nylon storage case like the Smartfire.

Otherwise, the two devices are the same. We only have the Primo Plus device for review, but except for the differences noted above, anything we observe about the Primo Plus will also apply to the Smartfire.


Features

Here is a list of features and specifications for the Primo Plus/Smartfire controller:

  • All-in-one combination blower and controller unit.
  • Automatically and constantly controls your grill cooking temperature
  • Monitor and change pit and food temperatures from your smart device.
  • Online Dashboard - View graphs of your cooks.
  • Easy to Use - Turns on as soon as you plug it in. There is only one mode - automatic.
  • Single multicolor LED indicator showing controller status
  • Variable Speed 8.6 CFM Blower
  • Display in degrees F or C.
  • 140° to 500°F (60° to 260°C) pit temperature control range.
  • 120° to 250°F (49° to 121°C) food range (varies by type of food).
  • Supports 4 wired probes (1 pit, 3 food) and 2 wireless MEATER probes
  • Temperature Probe Type: Thermistor
  • Probe temperature range: -40°F to 660°F (-40°C to 350°C)
  • Probe accuracy: ±1.0% of reading
  • Food Temperature probe cable: 5 feet (1.5 meters), stainless steel braided sheath
  • Pit Temperature probe cable: 10 feet (3.0 meters), stainless steel braided sheath
  • Temperature probes are waterproof
  • Open Lid Mode: Detects lid opening and pauses the fan to avoid over-stoking the fire.
  • Power Glitch Safe: Continues running at the saved set temperature when power returns.
  • Pit Temperature Alarm: Receive notification on your smart device if your pit gets too hot/cool.
  • Food Temperature Alarm: Receive notification on your smart device when your food is done.
  • Controller operating temperature range: 14°F to 131°F (-10°C to 55°C)
  • Controller weight: 5⅜ ounces / 153g
  • Controller dimensions (approximate): 4⅜" x 2¾" x 1⅞" / 111mm x 70mm x 48mm
  • Weatherproof (although see the Observations section below)
  • Wi-Fi IEEE 802.111 b/g/n support, 2.4Ghz only
  • Bluetooth LE 4.2
  • Firmware can be updated via the App allowing the addition of new features to existing units.
  • User controls when firmware is updated.


Compared To Other BBQ Temperature Controllers

Like most other temperature control systems, the Primo Plus/Smartfire system is blower-based, controlling airflow through the cooker by blowing air when needed. Where they differ from other higher-priced systems is that they have no display or keypad. They totally depend on network or Bluetooth connectivity so you can only monitor and control them using a smart device connected via Bluetooth or connected to your network or the internet. Another similarity with other lower-priced systems is that the blower is part of the controller itself and thus the controller mounts directly on your cooker.


The Basic System

The Primo Plus package comes with the following items:

  • The control unit
  • USB-C cable
  • 1 thermistor pit probe with grid clip
  • 2 thermistor food probes
  • Cooker adapter that fits most kamado-style cookers
  • Slide-on clip for the cooker adapter
  • Silicone kill plug for the cooker adapter
As we noted earlier, the Smartfire unit comes with one additional food probe, cable winders and a storage case.


A Few Observations About The Components

The blower and the control unit are integrated into a single entity for Primo Plus/Smartfire. In general, it feels solidly built. It is covered by a silicone boot which weatherproofs most of the unit. But that brings us to the most striking property of this unit. The bottom of unit is essentially open to the weather. It serves as the air intake for the blower, but also serves as a pathway for water to enter the unit. As you can see in the following photo, the electronics inside the unit are exposed to whatever what may try to get inside:


Here is what Smartfire has to say about this:

"The case and enclosure has (sic) been completely redesigned. We listened to the folk (sic) who wanted it to withstand biblical rain, we listened to the folk (sic) who thought the Smartfire unit could ‘feel’ more premium. Our solution to both is a new silicone sleeve that fits like a glove over an inner plastic case. After very careful engineering and a dozen 3D printed prototypes we’ve been able to successfully relocate the air intakes to the bottom of the unit. So standing vertical heavy rain falls straight off the side, and in light rain the water will curve around the edge and then drop harmlessly off the sleeve lip that extends past the probe sockets and air intakes."
We remain skeptical. We would be concerned about a cooker sitting on a flat surface where hard rain could splash off the surface and up into the unit, especially when the blower is actually running. Also, when the blower is running, anything floating about in the air can be sucked into the unit. If you have ever experienced pine pollen in the South during spring, you have to wonder if the electronics will be damaged by anything that can be sucked in. And as we will see later, the unit's LED indicator is only visible through the grate at the bottom of the unit which means you can't see it with the unit properly positioned with the grate facing down.

All that said, we have to admit our skepticism may be misplaced, as we have not heard of any complaints about unit failures due to this placement of the air intake.


The System Unit

The two units are identical save for the colors of the control unit covers and grates. The Primo Plus has a black cover and black grate. The Smartfire comes with either a black cover and red grate, or a red cover and black grate. The plastic case houses the electronics, the single LED indicator and the connections for power and temperature probes.

The unit itself is approximately 4⅜" x 2¾" x 1⅞" (111mm x 70mm x 48mm) and weighs 5⅜ ounces (153g). There is no dedicated power switch, per se, as power is turned on and off simply by connecting and disconnecting its power source. The unit has connections for power, a pit temperature probe and three food temperature probes. The controller is also enclosed in a silicone boot to aid in weatherproofing. As you can see in the photo, the boot has the Smartfire logo molded into it.


Controls

There is one control on the Primo Plus/Smartfire controller, a button. Pressing the button for 10 seconds will do a factory reset. However, Smartfire says that in the future, this button will be able to have actions assigned to it, like being able to cancel open lid mode, enable a 3 minute turbo 100% mode, etc. Otherwise, the only "controlling" is done from the App. Note that there is a separate App for each controller, however, they are very similar.


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