Almost everyone who asks me about HNB compatibility asks it the wrong way round. They ask "will my IQOS sticks work in a Glo?" and the answer is no, and that is the end of the conversation.
The better question is "what does the device actually do with the stick once it is in there?" Get that right and you can predict compatibility yourself, without a table and without asking anybody.
So let me lay out the mechanism, because it is genuinely not complicated once you see it.
Heating Method Decides Everything Downstream
There are three ways heat reaches tobacco in a modern HNB device, and each one imposes a different physical requirement on the stick.
A blade has to enter the tobacco. The device pushes a metal blade into the column. This means the stick has to be shaped for it, has to be loosely packed enough for the blade to insert without crushing, and has to hold the blade in place. A stick with the wrong density will either block the blade or rattle on it.
Induction needs an element inside the stick. The device creates an oscillating magnetic field, and something inside the stick converts that into heat. That something is a metal element manufactured into the stick itself. No element, no heat — the device will start and produce nothing. This is the least forgiving of the three, and it is why ILUMA only accepts its own stick family.
A chamber heats from outside the stick. The stick sits inside a heated cavity and heat conducts inward through its wrapper. Nothing has to enter the tobacco, and nothing has to be embedded in it. The requirements collapse to a much simpler list: the stick has to fit the cavity, and its wrapper has to conduct well enough.
That third case is the whole reason a chamber device tolerates more stick formats than the other two. It is not a marketing claim — it follows directly from the mechanism, because the mechanism has fewer requirements.
What Actually Determines Whether a Stick Fits
If you own or are considering a chamber device, these are the four dimensions that decide it. None of them are brand-specific.
| Dimension | What it affects | What goes wrong if it is off |
|---|---|---|
| Diameter | Whether the stick enters the cavity | Too wide will not seat; too narrow gives a loose, airy draw |
| Length | How much of the stick is heated | Too long leaves the tip underheated; too short scorches the base |
| Density | How heat conducts inward | Dense sticks stay cold in the core; loose ones finish early and taste harsh |
| Wrapper permeability | How air moves through the stick | Low permeability means a tight, hot draw with little vapour |
Notice that three of those four are physical dimensions, and the fourth is a material property. None of them require the stick to come from a specific manufacturer. That is the practical difference between a chamber device and a locked platform.
The Reason Locked Platforms Stay Locked
I do not think the major brands locked their ecosystems because they were being cynical. Induction genuinely requires it — you cannot embed an element in arbitrary third-party sticks, and you cannot tune a coil to a stick family that keeps changing.
Blade platforms are locked for a softer reason: the blade geometry is tuned to a known stick profile, and a stick that fits differently will either damage the blade or perform badly. The device could physically accept other sticks. It would just do it poorly.
Both of those are real engineering constraints. But they have a commercial consequence that is worth stating plainly: on a locked platform, the stick you can buy is decided by the brand, and if the brand decides to change something, your device's behaviour changes with it. That is what happened when several platforms reformulated their sticks over the last couple of years. The devices were fine. The consumable moved.
A chamber device does not escape that entirely — a badly reformulated stick will still fit badly — but it degrades gracefully instead of failing outright. A stick that is slightly off spec gives you a slightly worse session. It does not refuse to start.
How to Test a Stick Yourself in Two Minutes
You do not need a compatibility chart. Do this.
- Insert a cold stick and check the fit. It should seat fully with light resistance. If you have to force it, stop — that stick is too wide. If it drops in and wobbles, it is too narrow and your draw will be thin.
- Run a full session without drawing. Just let it heat and watch the behaviour. A well-matched stick comes up to temperature evenly across its length. You can usually feel this by touching the outer wrapper at the end: even warmth along the body is what you want, a hot patch near the base is not.
- Check what is left at the end. Pull the stick and look at it. Uniformly darker through the body means the heat conducted properly. A dark core with pale outer tobacco means the heat did not get inward — which is a density mismatch, not a device fault.
- Try a second session. Not because you need one, but because how a stick behaves on a second run tells you a lot about how evenly it was heated the first time. A stick that was heated uniformly has more usable material left.
Two minutes, four observations, no brand required. I have used this on sticks from four different manufacturers and it has never been wrong.
Where This Leaves the Small Brands
The manufacturers who chose chamber geometry over blade or induction did it for stick-flexibility reasons, and that choice has a second benefit that is easy to overlook: it also makes the device more tolerant of your existing habits.
The HEATX chamber takes the circumferential approach — the stick is wrapped in heating around its full circumference rather than heated at a single internal point. Practically, that means the compatibility question stops being "does my brand work with your device" and becomes "does this stick fit the cavity," which you can answer yourself with the four observations above. The specifications and cavity dimensions are listed at heatxlab.com/products if you want to check before buying.
And if you would rather not work it out from dimensions, that is a fair position to take. Send the brand and format of the sticks you already buy to the HEATX team and they will give you a definite yes or no. I would rather see that question answered honestly up front than have somebody discover it after the fact, which is how most compatibility disappointments in this category actually happen.
Last thing, and then I will stop. Run the second test twice before you draw conclusions. One bad session is a bad stick. Two identical bad sessions is your device, and it is worth knowing the difference before you spend money.
