What Is an IQOS / Heat-Not-Burn Device? A Complete Guide

If you've heard the term "heat-not-burn" and weren't quite sure what it meant — or you've seen IQOS devices and TEREA sticks in vape shops and assumed they were just another vape — this guide breaks down exactly what the category is, how it works, and how it's different from both vaping and traditional smoking.

What Does "Heat-Not-Burn" Actually Mean?

Heat-not-burn (sometimes abbreviated HNB) refers to a category of tobacco products that heat real tobacco at a controlled, relatively low temperature instead of burning it. A traditional cigarette burns tobacco at temperatures above 600°C, producing smoke. Heat-not-burn devices instead heat tobacco to below 350°C — hot enough to release nicotine and flavour, but well below the point of combustion, so there's no smoke, no ash, and no fire involved.

This is a fundamentally different mechanism from vaping. Vapes heat e-liquid — a mixture of propylene glycol, vegetable glycerin, flavouring, and often nicotine — with no tobacco leaf involved at all. Heat-not-burn devices heat an actual processed tobacco stick. Both produce an aerosol rather than smoke, but the source material is completely different.

What Is IQOS?

IQOS is the leading heat-not-burn system available in Canada, developed by Philip Morris International and distributed domestically through RBH, its Canadian subsidiary. The IQOS system is built around three core components:

1. A tobacco stick (branded as HEETS or TEREA, depending on the device generation)
2. An IQOS holder, which heats the stick
3. A charger, used to recharge the holder between uses

To use it, you insert a tobacco stick into the holder, press a button to begin heating, and once ready, use it much like a cigarette — drawing on it for flavour and nicotine — before disposing of the used stick afterward.

HEETS vs. TEREA: What's the Difference?

This is one of the most common points of confusion for people new to the category, since the two aren't interchangeable:

• HEETS are tobacco sticks designed for earlier IQOS devices (like IQOS 3 DUO), which use a small ceramic blade inserted directly into the tobacco stick to heat it from the inside.
• TEREA sticks are designed exclusively for the newer IQOS ILUMA generation, which uses a bladeless SMARTCORE INDUCTION SYSTEM — a metal heating element built into the stick itself, heated via induction rather than a blade in the device.

Because TEREA sticks are fully sealed (no exposed tobacco touching the device), IQOS ILUMA devices don't accumulate tobacco residue the way older blade-based holders do, meaning less cleaning is required. Critically, TEREA sticks only work with IQOS ILUMA devices, and HEETS only work with older blade-style IQOS devices — using the wrong stick in the wrong device can cause damage or simply won't function.

What Is IQOS ILUMA?

IQOS ILUMA is the current generation of IQOS hardware, and it comes in a few variants (including ILUMA, ILUMA PRIME, and ILUMA ONE) depending on features like battery capacity and design. Its main technical advancement over earlier IQOS generations is the induction heating system, which eliminates the blade entirely — reducing maintenance and, according to the manufacturer, improving consistency from stick to stick.

How Does Heat-Not-Burn Compare to Vaping?

Both categories are positioned as alternatives to cigarette smoking, but they're genuinely different technologies and experiences — heat-not-burn is aimed at people who specifically want a tobacco taste and experience closer to smoking, while vaping generally centers on a much wider range of flavours built from e-liquid rather than tobacco leaf.

Who Is Heat-Not-Burn Best For?

• Adult smokers looking for an alternative that still delivers a genuine tobacco taste and ritual, rather than switching to flavoured e-liquid.
• Vapers curious about tobacco-forward products who want to compare the heat-not-burn experience to their current device.
• Anyone who values reduced ash, smoke smell, and mess compared to traditional cigarettes, since heat-not-burn sticks don't burn or produce ash.

Like vaping and smoking, heat-not-burn products still contain nicotine, which is addictive — this guide is intended to explain how the technology works, not to make comparative health claims between categories.

Shop IQOS at Clutch Vape

Clutch Vape carries IQOS ILUMA devices along with TEREA and HEETS tobacco sticks across a range of flavours, with fast shipping across Canada and fully age-verified checkout in line with Canadian tobacco regulations.

Frequently Asked Questions

Is IQOS the same as vaping? No — IQOS heats real tobacco sticks, while vapes heat e-liquid. They're both smoke-free alternatives to cigarettes, but they use entirely different source materials and technology.

Can I use HEETS in an IQOS ILUMA device? No — TEREA sticks are designed exclusively for IQOS ILUMA's induction heating system, while HEETS are designed for older blade-based IQOS devices. They are not interchangeable.

Does heat-not-burn produce smoke? No — since the tobacco is heated rather than burned, heat-not-burn devices don't produce smoke, ash, or fire, though they do produce a nicotine-containing aerosol.

What's the difference between IQOS ILUMA and earlier IQOS devices? IQOS ILUMA uses bladeless induction heating (paired with TEREA sticks), while earlier IQOS devices use a ceramic blade inserted into the tobacco stick (paired with HEETS).

Explore IQOS ILUMA devices, TEREA, and HEETS at Clutch Vape — Canada's source for heated tobacco and vaping alternatives.