AUXO Celsius Review: Dual-Use for Dry Herb & Concentrates

Late last year I reviewed the AUXO Calent, a dry herb vaporizer that really impressed me with its overall design and performance, especially its dual conduction and infrared heating. But what could be better than dual heating? How about triple heating?

The AUXO Celsius is the latest portable dry herb vape from AUXO and it appears to be a direct successor to the Calent. The design is very similar, from the swiveling mouthpiece down to the simple, display-free operation. However, instead of dual heating like the Calent, the Celsius takes it a step further by using a combination of conduction, infrared, and convection heating.

The Celsius is meant to be used with dry herb but it can also be used with concentrates by simply inserting the concentrate chamber into the oven (which comes included with the device).

The Celsius has a temperature range of 284-500°F(140-260°C) and packs an 1100mAh battery that is rated for about nine sessions per charge. It recharges with Type-C charging.

Is the Celsius even better than the Calent? The specs certainly make it appear so, but I put it through its paces to find out for sure.

Box Contents

• 1 x AUXO Celsius Dual-Use Vaporizer
• 1 x Concentrate Chamber
• 1 x Loading Tool
• 1 x Tweezers
• 1 x Cleaning Brush
• 5 x Cotton Swabs
• 1 x Power Adapter
• 1 x USB-C Charging Cable
• 1 x User Manual
• 1 x Quick Start Guide

Specifications

• Dimensions: 114.1mm(H) x 45.1mm(W) x 33.3mm(D)
• Weight: 157.8g
• Zirconia mouthpiece
• Aluminum alloy body
• Stainless steel heating oven & concentrate chamber
• Dual-use for dry herbs & concentrates
• Oven Size: 0.3g
• Heating System: Triple heating, Conduction, convection, & infrared
• Heat-up time: 6-30 seconds
• Session time: 3 minutes
• Temperature range: 284-500°F(140-260°C)
• Battery: 1100mAh
• Battery life: 9 sessions
• Charging time: 60 minutes
  

Design & Build Quality

As someone who has used AUXO’s last dry herb vape, the Calent, the Celsius gives me a bit of deja-vu. It looks extremely similar with its oval body and swiveling mouthpiece but it’s also apparent that this is a new and improved device.

The Celsius is constructed nearly entirely of aluminum alloy, with a zirconia mouthpiece and stainless steel oven. It’s available in either silver or slate grey and I received the silver version for this review. The satin finish has a nice sheen and gives the device a shimmering, clean appearance. The silver version gives me Macbook vibes. Overall, it looks premium and clean.

The size of the Celsius has not changed much from the Calent, although it is slightly taller and deeper. The Celsius is 114.1mm tall, 45.1mm wide, and 33.3mm deep. This size places it firmly in the ‘portable’ category of dry herb vapes and I didn’t find it much different than carrying around a vape mod kit in my pocket.

If you ask me, the Celsius hits that sweet spot between portability and comfort. It’s small enough that you’re not going to struggle or be inconvenienced if you want to take it out of the house, but it’s also large enough that it’s a pleasure to hold and doesn’t sacrifice practicality.

The power button is a regular button that is located on the bottom of the device. But rather than physical buttons for adjustment, the Celsus features two touch buttons with haptic feedback.

This haptic feedback almost makes it feel like they’re physical buttons, but not quite. Still, they work well enough and allow you to do anything that you would with ‘normal’ buttons.

The mouthpiece is wide and very nearly flat, although there is a slight curve to it. It rotates 360° and tucks away at the top of the Celsius. When you’re ready for a session you can swivel it out and when you’re done you can tuck it right back out of the way. I liked how it worked on the Calent and I like it here too.

Since it’s made of Zirconia, the mouthpiece efficiently cools down vapor, even when the Celsius is set to 500°F and is being used with concentrates. It’s actually impressive how much the vapor manages to cool down over such a short vapor path; the vapor goes straight from the oven, through the thin mouthpiece, and into your mouth.

The mouthpiece also functions as the top cap for the heating chamber. It’s a magnetic attachment and the magnets keep the chamber firmly sealed. To remove it, simply give it a firm tug and it will come away, giving you access to load the oven.

Heating Chamber

While the outward appearance and design have changed from the Calent, the Celsius features a nearly identical heating chamber (at least in terms of the size and construction material). The oven is made of stainless steel (good news) and can hold up to a max of 0.3g of dry herb material. Right at the top of the inner oven there is a black fill line so just make sure that you don’t go above this level.

AUXO recommends using a medium-grind for your herbs in order to get the best experience. You don’t want to fill the chamber with herbs that are too finely ground to a dust or powder consistency because this will just clog/choke the airflow and you won’t get even heating.

In addition to dry herbs, the Celsius can also be used with concentrates and it offers this capability straight out of the box. The concentrate chamber can simply be dropped into the oven and just like that, you can use concentrates.

The concentrate chamber can be filled with up to 0.05g of material and, while this doesn’t sound like much, it’s more than enough for a nice session of multiple little draws.

Features

The Celsius is straightforward and offers what you would expect from a dry herb vaporizer. From the temperature range to its functionality, the Celsius is very standard. However, that doesn’t mean that the Celsius is lacking in performance—it still offers all of the features needed for a more than satisfying experience.

There are four different preset heat settings, along with a ‘Pro’ mode that can be customized by using the app. The first three settings are for dry herb use, while the fourth is for concentrates. The temperature level is displayed by five indicator lights which form a circle just below the adjustment buttons:

• Mode 1: 374°F (190°C) Dry Herb
• Mode 2: 392°F (200°C) Dry Herb
• Mode 3: 428°F (220°C) Dry Herb
• Mode 4: 500°F (260°C) Concentrates
• Pro Mode: 284-500°F (140-260°C) User-customizable

Pro mode can be set to a temperature and session timer of your choosing and also allows you to set a temperature curve throughout the session. You can start the temperature low and go higher throughout the session, or you can start high, go low, then go high again. You can set the temperature curve at 45-second intervals, giving you five temperatures that you can set throughout a 180-second pro session.

The predecessor to the Celsius, the Calent, featured dual heating of conduction and infrared. However, the Celsius adds convection into the mix and features triple-heating which is a combination of conduction, convection, and infrared to heat up your material.

The conduction portion of the Celsius works by heating up the stainless steel oven, which your material comes into direct contact with. The convection portion works off of the power of your draw, which moves the hot air in the oven around your herbs. Additionally, infrared gently heats up your herbs at the same time.

In combination, these three heating methods make for really even heating and make it possible to extract every bit of oil from your material in one session.

The Celsius takes anywhere from 6-30 seconds to heat up. While it’s true that it can reach the lowest temperature mode, Mode 1(374°F) in only six seconds, higher temperatures will increase the heat-up time. Even once it has reached the set temperature you’ll want to give it an additional 10-15 seconds, along with some light draws, to really get it going.

The Celsius has a session timer that is 3 minutes. While it can’t be extended, it can be decreased by using Pro Mode, or ended early by turning the device off. Once a session is over the Celsius will stop heating and go back to standby mode. If you’re still not finished after a single session then you can easily turn the heating back on for another session.

How to use the AUXO Celsius

Unlike the Calent which was a dry-herb-only device, the Celsius can be used with either dry herb or concentrates. However, operation remains similar and you can operate the Celsius in one of two ways; either as a standalone device or through the app.

If you want more control over your sessions, such as setting custom temperature curves or even just custom temperatures, then I highly recommend using the app. It also provides way more information about the Celsius such as the battery level (which otherwise is a mystery), and a session timer countdown. You can change the strength of the haptic feedback and update the firmware through the app as well.

If you opt to use the Celsius as a standalone device then operation is still simple, just more mysterious as you don’t have the temperature, battery life, or session timer on display. Still, it’s perfectly usable on its own without the app.

Holding the power button for a few seconds will turn the Celsius on. You can tap the adjustment buttons to increase or decrease the temperature, which is indicated by the LED ring below the buttons.

The lights are blue while the device is in standby and not actively heating. Once you’ve selected your preferred temperature setting, hold the “+” adjustment button until the device vibrates. The LEDs will begin flashing in a circle. After 6-30 seconds (depending on the temperature that you selected) the LED ring will light up solid green and the Celsius will vibrate, indicating that it’s reached the target temperature and is ready to go.

By default, session times are set to 180 seconds and cannot be extended, even through the app. If you want longer sessions, you can start another session by holding the “+” adjustment button.

AUXO Connect App

The AUXO Connect App makes using the Celsius even easier. Although not absolutely necessary, I highly recommend using the app in order to get the best experience from the device.

The UI is simple and works the same as for AUXO’s other devices. There’s a large temperature reading in the middle of the screen, along with battery life percentage at the top, the ability to choose from one of the four preset modes or use Pro mode, and the temperatures for each mode.

You can easily start a session by selecting one of the four preset temperatures and pressing “Start”. The temperature reading will update live, showing you the temperature as it heats up. Once ready, the Celsius will vibrate and the session timer countdown will begin.

Battery Life & Charging

In most aspects, the Celsius is a direct upgrade to the Calent. One area in which it is not is the battery capacity. The Celsius, although larger than the Calent, only has an 1100mAh battery—a noticeable downgrade from the 2900mAh battery on the Calent.

Battery life suffers as a consequence and only allows approximately nine, three-minute sessions per charge. That’s about half an hour of usage time per charge, which is disappointingly short.

The upside to the small battery capacity is that the Celsius recharges quickly using the included adapter and USB-C cable. AUXO’s website states 90 minutes but I timed a few full charges and they all came out to just over an hour. The Celsius cannot be used while charging so if this is your only vaporizer then you’ll have to wait for it to recharge before you can vape again.

Performance

Overall, I’ve been quite impressed with the performance of the Celsius but the battery life can be less than ideal, especially for a user like me who likes to use their vaporizer multiple times per day.

Heavy vapers will definitely find the battery life to be lacking and may even deplete the battery in a single day. That has been the main drawback to using the Celsius and it’s unfortunate because otherwise it’s a great device.

Heat-up times are quick and I mean really quick. In only 15 seconds it reaches 428°F and all it takes is a few pulls to really get it going. I was able to get really big draws just by leaving it heated up for an additional 30 seconds before taking a pull. The triple combination of conduction, convection, and infrared does an excellent job of heating up and heating quickly.

It does such a good job that my herbs are evenly toasted and fully extracted within a single session. There’s no going back for seconds with the Celsius! It’s remarkably efficient and this makes up for the lack of battery life a little because you don’t have to run multiple sessions to finish an oven of material.

The draw is tight, requiring some strength to pull through the square airflow holes on the side of the device and into the oven. Vapor is warm but not too much so, with plenty of flavor coming through from my material.

The concentrate oven works, but it’s a different experience than when using any other e-nail. Instead of large, vapor-filled draws, the Celsius delivers a “session” out of concentrates. You get multiple, smaller draws that aren’t quite as powerful. The flavor is there though and can really be enjoyed with the Celsius whereas you may not get that opportunity when vaporizing concentrates at higher temperatures with other devices.

Even with concentrates, the vapor remains relatively cool and still feels smooth.

Verdict

Overall, the Celsius does dry herb vaping extremely well, but it wouldn’t be my first choice for a concentrate vaporizer. If you’re after the flavor from your concentrate materials rather than the effects, the Celsius does a great job of bringing out the maximum flavor. But for large, powerful concentrate draws, a dedicated e-nail would be my recommendation.

The fact that the Celsius can do concentrates well at all though is impressive. It wouldn’t be my first choice but it also wouldn’t be my last. On the other hand, it’s really great for dry herb vaping and has earned its place in my regular rotation of devices.

The one major downside is the battery life, especially if you like to run multiple sessions per day. Nine sessions is not a lot and I can easily do that in a span of a few hours. If you’re a heavy vaper then just know that you will be charging the Celsius every day, if not twice a day, and that it takes an hour to charge.

I really like the Celsius but the battery life is a pain-point that makes it difficult to recommend for those who frequently use their vaporizer throughout the day. If you’re a moderate vaper then you may find it to suffice but you’ll still want to use the app to keep track of the battery charge level.

Have you used the Celsius? If so, how do you like it? Leave me a comment down below.

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