IQOS vs Vaping: What Is Actually Different?
Heated tobacco and vapes look alike but work differently. What each one heats, how the aerosols compare, and which one turns out to be harder to put down.
Quick answer
IQOS heats a stick of real tobacco to around 350°C; a vape heats a nicotine liquid with no tobacco in it. Both produce an aerosol rather than smoke and both are addictive. The biggest practical difference is shape: a heated tobacco session ends after about 14 puffs, while a vape has no endpoint at all.
They look like cousins: a rechargeable device, a mouthpiece, an exhale that is not quite smoke. Underneath, they have almost nothing in common.
A vape heats a liquid. Heated tobacco heats tobacco. That single difference determines what is in the aerosol, how the product is regulated, and, more usefully for you, how the habit behaves across a day.
What each device is actually heating
A vape contains e-liquid: propylene glycol and vegetable glycerine as carriers, nicotine (usually as a nicotine salt in modern devices), and flavourings. A coil heats that liquid to a few hundred degrees and it becomes an aerosol. There is no tobacco leaf anywhere in the device.
A heated tobacco device contains a short stick of processed, reconstituted tobacco leaf mixed with glycerol. The device heats it to around 350°C, releasing nicotine from the leaf itself. Nothing burns, so there is no tar and no ash, but the raw material is tobacco.
That is why the two are treated differently almost everywhere. Heated tobacco falls under tobacco regulation by definition. Vapes are regulated under a patchwork that varies enormously by country.
Side by side
| IQOS (heated tobacco) | Vape (e-cigarette) | |
|---|---|---|
| Heats | A tobacco stick | Nicotine liquid |
| Contains tobacco | Yes | No |
| Tar | No, nothing burns | No, nothing burns |
| Nicotine | From the tobacco leaf | Added, usually as nicotine salt |
| Flavours | Limited, tobacco and menthol-led | Very wide, sweet and cooling common |
| Session shape | Fixed: about 6 minutes or 14 puffs | Open-ended, you decide |
| Typical daily count | Roughly a pack’s worth of sessions | Often 200-500 small puffs |
| Consumables | Sticks, sold in packs of 20 | Coils, pods or disposables |
| Health-body framing | WHO: a tobacco product, harmful | NHS: substantially less harmful than smoking, not harmless |
| Long-term data | Very limited, on market since around 2014 | Limited, under 20 years |
The difference nobody mentions: one of them ends
This is the row that actually changes lives, and it is not about chemistry.
A heated tobacco session finishes itself. The heater runs about six minutes or 14 puffs and then shuts off. You get an ending, whether or not you wanted one. That is the same architecture a cigarette has, and it is the reason both stay countable: a pack a day is twenty sessions, roughly 280 puffs, and you can hold that number in your head.
A vape never ends. It sits charged in your pocket, it makes no ash and no noise, and there is nothing in the design that says stop now. So usage does not stay in sessions, it dissolves into the gaps in your day: the lift, the traffic light, the sentence you are stuck on. People who switched from twenty cigarettes to a vape frequently discover they are taking four hundred puffs and consuming more nicotine than they ever did from tobacco.
If you are choosing between the two purely as a quitting route, that shape matters more than most of the chemistry arguments. Something with edges can be measured, capped and stepped down. Something continuous cannot be, until you make it visible.
Which one is less harmful?
The careful answer is that they are not on the same evidence footing, and neither has the kind of data that would let anyone rank them confidently.
For vaping, several national health bodies including the NHS assess nicotine vaping as substantially less harmful than smoking, and Cochrane’s living review finds nicotine e-cigarettes help more people stop smoking than nicotine replacement therapy does. The caveat is that long-term data does not exist and “less harmful than the most lethal consumer product ever sold” is a low bar.
For heated tobacco, the World Health Organization declines to accept that it is less harmful than cigarettes at all, on the grounds that reduced exposure to some toxicants has not been shown to reduce disease. The US FDA authorised a reduced exposure claim in 2020 and refused a reduced risk claim.
So: one of them has cautious institutional support as a harm-reduction step. The other has an explicit refusal from the regulator that examined it most closely. That is not a verdict on which will harm you more in thirty years. It is the state of the evidence today, and it is worth knowing which is which.
Both keep you dependent
Here is what the comparison table hides by putting things in separate columns. Whichever one you use, you are on nicotine, and nicotine dependence looks the same from the inside.
You still get the tight, distracted feeling around ninety minutes after the last one. You still reorganise a flight, a dinner, a hospital visit around access. You still have the small private panic when the device is not in your pocket. Neither product removes that, because neither is designed to.
Switching between them mostly changes the texture of the habit, not its grip. Plenty of people have gone cigarettes to heated tobacco to vape and back, feeling each time like they were making progress, and arrived five years later with the same dependence and a drawer full of chargers.
The two-minute move
Do not pick a side yet. Get a number first.
Today, count. If you use heated tobacco, count sticks. If you vape, count puffs. Change nothing else, and do not try to make the number look better. Do the same tomorrow and the day after. Three days is enough to replace an impression with a fact, and almost everyone’s fact is higher than their impression.
Puff Counter handles both: it counts sticks or puffs with one tap, then sets each week’s limit from the average you actually recorded rather than an optimistic figure, which is why the steps stay small enough to hold.
The vape versus heated tobacco question sorts itself out once you can see the number. What you are trying to leave is the same thing either way.
Frequently asked questions
Which is worse, IQOS or vaping?
Neither has long-term outcome data, so a ranking would be invented. Heated tobacco contains tobacco and is regulated as a tobacco product; vape liquid does not. Health bodies such as the NHS assess nicotine vaping as substantially less harmful than smoking, while the WHO declines to call heated tobacco less harmful at all.
Is IQOS more addictive than a vape?
Per session, they are comparable, since both deliver nicotine quickly. In practice vapes often produce higher daily intake because there is no natural stopping point, so use spreads into hundreds of small puffs. Heated tobacco keeps the cigarette's countable rhythm, which usually caps the total.
Can you use vape liquid in an IQOS device?
No, and you should not try. Heated tobacco devices are built to heat a solid tobacco stick, not to hold or vaporise liquid. Putting liquid into one risks damaging the heater, voiding any warranty and producing an aerosol nobody has tested.
Does IQOS smell less than vaping?
Heated tobacco has a distinct warm tobacco smell that fades faster than cigarette smoke but is more noticeable than most vape aerosol, which tends to smell sweet and disperse quickly. Neither is odourless, and both leave residue on surfaces in rooms where they are used regularly.
