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What is sub-ohm vaping?

Mostly vapers are familiar with Sub Ohm vaping but the questions that arise in the mind of beginners after listening the name of Sub Ohm vaping are.

What is sub-ohm vaping?
Is it safe? Which e-liquid should you use?
What on earth is DL and MTL?

What is sub-ohm vaping?

In simple words sub-ohm vaping is define as


It is characterised by large clouds of vapour and an enormous amount of flavour from your juice. To try sub-ohm vaping you would like a sub-ohm e-cig that delivers a better wattage and a coil with a resistance less than 1.0ohm.

This type of vaping also provides enough airflow suitable for direct lung inhalation. Sub-ohm typically requires vape mods capable of putting out a minimum of 40 watts, but the upper levels can reach and exceed 200 watts.

The other terminology used for sub-ohm vaping is DL (Direct Lung) inhaling. First, let’s understand the difference between DL and MTL.

Difference between DL and MTL

There are two styles of vaping DL (Direct Lung) and MTL (Mouth to Lung). Both are dictated by the vape kits themselves.

  • DL (Direct Lung)

The DL style is where you take a long inhale and you inhale directly into your lungs. The idea here is to slowly and smoothly inhale the vapour on to your lungs, as if you're ‘breathing’ the vapour in, then exhale a powerful cloud. You don’t need to fill your lungs just like the cloud-chasers do but can take smaller inhales if you favor.

  • MTL (Mouth to Lung)

MTL inhales follow the principle of

Drawing the vapor into the mouth first then inhaling to the lungs, before exhaling a smaller volume of vapour.

The MTL sort of vaping is that the one that resembles smoking a cigarette the foremost, this is often thanks to the very fact that you simply use them by inhaling into your mouth first then into your lungs, almost like a standard cigarette. The starter vape kits are generally smaller and more basic and therefore the starter e-liquids used with them are higher in PG (Propylene Glycol) and a better nicotine level.

When sub-ohm vaping, most of the people follow DL. This is often because there's such a lot of vapor being produced so quickly, the simplest way is to directly inhale the vapour. MTL vaping does not really work as you cannot draw enough vapor into your mouth.

Factors That Effect the Sub-Ohm Vaping Experience

  • Wattage

This term refers to the particular power that's generated by an electrical unit. In sub-ohm vaping increased wattage means more heat produced, increased vapor and in fact more flavor.

  • Coil Resistance

Coil resistance may be a deciding think about sub-ohm vaping. Coils with increased surface areas conduct more current due to the lowered resistance. Thinner coils have the other effect because resistance and wattage output are inversely proportional.

  • Battery Voltage

With reference to vaping, this refers to the facility generated by the batteries of your vaping device. Increased voltage means higher wattage except within the event of increased resistance.


Aside from just big clouds, there are many other advantages of sub-ohm vaping over other sorts of vaping.

  • Big vapour clouds
  • Better e-liquid flavour 
  • Warm vapour
  • Smoother vape
  • More airflow

Which e-liquid should you use?

The E-liquid used in sub-ohm vaping is usually higher in VG (Vegetable Glycerin) and lower in nicotine. Higher VG content allows for the larger clouds which beginners can used with a lower nicotine level, thanks to the quantity of vapour produced. For more information on varying sorts of e liquid within the UK visit our store.

Best coils build for big clouds

Mostly, cloud chasing was done almost exclusively with low-ohm coils on a mech mod. Eventually builders realized they might use two strands of wire to make an ultra-low resistance coil, with plenty of area, which eventually gave way to twisted and parallel dual coil builds.

Dual coils are standard for clouds, but many vapers have taken that to subsequent level with triple and even quadruple coil configurations. This cuts the resistance down and greatly increases area.

Devices for Sub-Ohm Vaping

Not all vape devices are often used for sub-ohm vaping due to the requirements (coil resistance) needed for the sub-ohm vaping. Here are some devices that are used for sub-ohm vaping.

  • Sub-ohm Tanks

These tanks are made from two materials chrome steel and glass. In fact, their coils are low resistance and are commercially produced and disposable. These tanks are meant for vapers who cannot build their coils but want to experience sub-ohm vaping. One example of such a tanks is Freemax Fireluke Mesh, Smok TFV Mini tank.

  • Rebuildable Tank Atomizers (RTAs)

These are vaping tanks with rebuildable decks. Users need to build their own coils which must be within the tank. E-liquid is already stored in this tank so there is no need for dripping.

  • Rebuildable Dripping Atomizers (RDAs)

These devices simply contain a customized coil and cotton which the vaper wraps round the coil. there's no tank because the e-liquid is dripped onto the wick until it's saturated.


Done correctly sub-ohm vaping is perfectly safe. But you're using high powers and low resistance coils so there are some things to seem out for when sub-ohm vaping. The safest way to sub-ohm vape is with a mod or device that already has vaping safety features inbuilt.