They are different generations rather than rivals. HEETS work in the older blade-heated IQOS devices; TEREA sticks carry their own internal heating element for the induction-based ILUMA. Most users find TEREA sessions more consistent, with no cleaning and no risk of a snapped blade, which is why the range has become the standard.
Insert the stick into your ILUMA with the printed line sitting at the mouth of the holder, and do not twist it. Press the button, wait for the vibration, then puff normally. When the session ends, slide the stick straight out and dispose of it; the tobacco stays sealed inside the wrap.
One stick gives a session of about six minutes or fourteen puffs, whichever comes first, and the device signals when you are near the end. A pack of 20 sticks lasts a pack-a-day smoker about the same time as a pack of cigarettes.
Nicotine delivery per stick is broadly in the same range as a cigarette, which is why the switch feels natural to smokers. The exact figure varies by variety, with the fuller tobacco blends such as Russet feeling strongest and lighter options such as Silver noticeably gentler.
Amber and Yellow lead among ex-smokers for their straightforward tobacco character, Blue is the menthol favourite, and Twilight Pearl is the pick of the capsule line for people who like to vary each session. Trying two or three packs is the quickest way to find your own regular.
We stock the full range listed above at £6.95 per pack with fast tracked delivery from our UK warehouse, alongside the ILUMA ONE device if you need the hardware too. Multi-buy savings apply across our heated tobacco range.