What Is Sub Ohm Vaping?
A clear guide to sub ohm vaping, the low-resistance coils, big clouds and who it suits.
The short answer
Low resistance. Vaping with a coil below 1 ohm for big, warm clouds.
The style
Direct-to-lung, with high-VG liquid.
Best for
Experienced vapers chasing clouds and flavour.
What is sub ohm vaping?
Sub ohm vaping means using a coil with an electrical resistance below 1 ohm, which lets far more power flow through it. That extra power heats the e-liquid faster to produce big, warm clouds and bold flavour, inhaled straight into the lungs with low-nicotine, high-VG liquid. It is a more advanced style of vaping.
It helps to know how it differs from a starter kit. A normal pod or pen uses a higher-resistance coil for a tight, gentle draw, while sub ohm uses a low-resistance coil and more power for clouds. This page explains what sub ohm means, how the kit and liquid work, who it suits and the trade-offs, so you can decide if it is for you. As with any vape, this is for adults aged eighteen and over.
Let us look at the meaning, the setup, who it suits and the trade-offs.
Sub ohm sits at the opposite end of vaping from a discreet pod kit, since it is built for performance rather than convenience. Knowing the difference helps you avoid buying the wrong setup.
How sub ohm vaping works
It all comes down to coil resistance. A coil below 1 ohm lets more current through, which creates more heat and vaporises more liquid, so you get bigger, warmer clouds than a high-resistance coil produces.
- Low resistance: a coil below 1 ohm, often below 0.8.
- More power: a higher-wattage device drives the coil.
- Open airflow: wide airflow cools the coil and adds vapour.
- Direct-to-lung: you breathe the vapour straight in.
The liquid and nicotine matter just as much. Sub ohm needs a high-VG liquid to make those thick clouds, paired with a low nicotine strength like 3mg or 6mg, since the large vapour volume would make a high strength feel harsh, which is why nic salts do not belong here.
The vapour volume is the whole reason the nicotine strength has to drop, since each puff carries so much more. Treating it like a pod kit is where people most often go wrong.
Sub ohm versus mouth-to-lung
Illustrative.
The kit you need
Sub ohm vaping asks for the right gear. You need a high-wattage device with a strong battery, a sub-ohm tank with low-resistance coils and a high-VG e-liquid, since the low resistance draws a lot of power and needs thick liquid to keep up.
On the device, sub ohm kits run at higher wattages than pod kits, so they use larger built-in batteries or removable high-drain cells to supply the power safely. On the tank, a sub-ohm tank holds prebuilt low-resistance coils and usually has a wide mouthpiece and adjustable airflow for big, cool clouds. On the liquid, a high-VG juice of around 70 percent VG or more produces the thick vapour without a harsh throat hit, while a thin high-PG liquid would taste rough and risk a burnt coil. On nicotine, keep it low at 3mg or 6mg, since the sheer vapour volume delivers plenty. Getting these to match is the difference between a smooth, cloudy vape and a harsh, disappointing one.
Mismatched parts are the usual cause of a poor sub ohm experience, not the device itself. Once the coil, liquid and power line up, it tends to feel effortless.
Ready for bigger clouds?
We stock sub-ohm kits, coils and high-VG e-liquids to match. Browse our starter kits or ask the team for advice.
Who it suits and the trade-offs
Sub ohm is not the best starting point for everyone. It suits experienced vapers who want big clouds and bold flavour, yet it is usually not ideal for beginners, switchers needing high nicotine or anyone wanting something discreet.
On who it suits, sub ohm is great if you enjoy the cloud-chasing side of vaping and the direct-to-lung style, having got comfortable with the basics first. On who it does not suit, beginners often find the direct-to-lung draw strange, while anyone relying on high nicotine to stay off cigarettes is better on a mouth-to-lung pod kit with nic salts. On the trade-offs, sub ohm drains the battery faster, gets through more e-liquid and produces large clouds that may bother people nearby. On safety, always stay within the coil rated wattage, keep the wick wet and use a device and batteries rated for the power. For the right person it is a richer, more flavourful vape, just not the simplest one to begin with.
- Great for clouds: big vapour and bold flavour.
- Not for beginners: the direct-to-lung draw takes getting used to.
- Low nicotine only: 3mg or 6mg high-VG liquid, no nic salts.
- Heavier on resources: more battery and e-liquid used.
If you want to dig deeper, see our explainer on how to inhale a vape. It pairs well with our guide on what nicotine salt is and our look at what vaping is.
For the full set of guides, the vaping FAQs hub brings everything together in one place.
The bottom line: sub ohm vaping uses a coil with a resistance below 1 ohm, which lets more power through to heat the liquid faster and produce big, warm clouds. It uses a direct-to-lung draw, a high-wattage device, a sub-ohm tank and a high-VG liquid, paired with low nicotine like 3mg or 6mg, since high strengths and nic salts would feel harsh. It suits experienced vapers chasing clouds and flavour, yet uses more battery and liquid and is not ideal for beginners. This is for adults aged eighteen and over.
Curious about cloud chasing?
If you have the basics down and fancy bigger clouds, a sub-ohm kit with high-VG liquid is the way in. Our vape starter kits and tanks are easy to browse, plus the Vape Chaos team are happy to help you pick the right setup.
Frequently asked questions
What is sub ohm vaping?
Sub ohm vaping means using a coil with an electrical resistance below 1 ohm, often below 0.8. The low resistance lets more power flow through, which creates more heat and vaporises more liquid, producing big, warm clouds and bold flavour. It uses a direct-to-lung draw, a high-wattage device, a sub-ohm tank and a high-VG liquid with low nicotine. It is a more advanced style than a simple pod kit.
What nicotine strength is best for sub ohm vaping?
Keep it low, typically 3mg or 6mg. Because sub ohm coils produce so much vapour per puff, they deliver nicotine very efficiently, so a high strength would feel harsh and give you far too much at once. This is also why nicotine salts should never be used in a sub-ohm device. If you need higher nicotine to stay off cigarettes, a mouth-to-lung pod kit with nic salts is the better choice.
Is sub ohm vaping good for beginners?
Usually not. Sub ohm vaping uses a direct-to-lung draw that many beginners find strange at first, needs more advanced kit, plus only works with low nicotine. Anyone switching from smoking who needs a satisfying nicotine hit is better starting on a mouth-to-lung pod kit with nic salts. Sub ohm is best once you are comfortable with the basics and want bigger clouds and richer flavour rather than a cigarette-like hit.
What kit do you need for sub ohm vaping?
You need a high-wattage device with a strong built-in or removable high-drain battery, a sub-ohm tank with low-resistance coils, plus a high-VG e-liquid of around 70 percent VG or more. The low resistance draws a lot of power, so the device and batteries must be rated for it. Always stay within the coil recommended wattage, keep the wick wet, then pair it with a low nicotine strength.
What are the downsides of sub ohm vaping?
Sub ohm vaping drains the battery faster and gets through more e-liquid than a low-power pod kit, since it uses more power per puff. The large clouds it produces can also bother people nearby and are not very discreet. It only works with low nicotine, so it does not suit smokers who need a strong hit. It also asks for more care around wattage, coils and battery safety than a simple kit.
