Sub-Ohm 101: What is Sub Ohm Vaping?

Vaping is the process of inhaling vapor (aerosol) from an e-cig and there are different ways to do it. One is sub-ohm. But what is it?

This specialized style of inhaling is practiced by cloud chasers who want to do vape tricks or produce larger clouds of vapor full of intense flavour. 

To accomplish this unique style of vaping, you will need a sub-ohm device, or mechanical mod, featuring a sub-ohm tank.

Made for the production of large vapor clouds, these mechanical mods use a coil with lower resistance, about less than one ohm, (hence the term sub-ohm) on a high-wattage battery like hybrid lithium batteries. 

You’ll also need regulated mods capable of putting out at least 40 watts, although higher levels could exceed the 200-watt amp limit.

A sub-ohm device has less resistance due to low resistance coils, making your atomizer heat much faster. The increase in the current going through your coil will then increase vapour production and produce thicker clouds.

Sub-ohm vapers typically use the DTL vaping style, also known as lung vaping. 

This means rather than drawing vapor to your mouth then inhaling it into your lungs, you inhale large vapor clouds from the tank straight to your lungs. 

This isn’t the case every time. Sometimes, these types of vaping devices have a tighter airflow and weak battery output. 

In such cases, a person vaping might have to use the MTL vaping style where they draw through the mouth and puff into the throat or lungs.

When using this style, the clouds won’t be as big.

Although they have advantages, using sub-ohm devices is not recommended for new vapers. 

It’s best to start with a few puffs to avoid getting a harsh throat hit or headaches due to the amount of power produced.

What is Sub-Ohm Vaping Juice Compared to Regular Vaping Juice?

Sub-ohming is consistent with the production of large clouds of vapor so many prefer to use an e-liquid with a higher VG ratio rather than an average VG ratio. 

An e-liquid such as this provides a smooth vape, lower throat hit, and longer time to inhale.

Is Sub-Ohm Vaping Dangerous?

All types of vaping come with risks. 

To assure sub-ohm safety, choose premium vaping materials. To avoid accidents, learn about the different coils, wattages, and combinations that work for you.

When people don’t understand electricity dynamics and build their own coils, they can damage vaping devices. This can cause accidents leading to injuries.

It’s also important to avoid overheating your battery when the coils are powered.

3 Factors Affecting Your Sub-Ohm Vaping Experience

1. Coil Resistance

Coils with a large surface area can lead to greater current conduction because the resistance will be low. 

Thinner coils will work oppositely since the wattage and resistance are inversely proportional.

2. Wattage

An increase in wattage will produce more heat, vapor, and flavor.

3. Battery Voltage

An increase in the battery voltage means a higher wattage except when resistance is also increased.

4 Advantages of Sub-Ohm Vaping

Sub-ohm vaping comes with advantages. They are:

1. Rich Flavor

The coils of such specialty devices have an increased power output and can vaporize increased amounts of e-liquid from sub-ohm tanks at one time.

 Most sub-ohm vapers receive an intense flavor from every single puff.

2. Better Airflow

When sub-ohming, there’s a direct lung inhale and airflow is unrestricted as a result of the sub-ohm coil component. 

This is due to increased air needed to cool down the heat produced from the sub-ohm coils.

3. Large Clouds

A lot of vapers enjoy blowing huge clouds and this can be achieved with sub-ohm vaping. 

There’s nothing better than a sub-ohm vaping device when the goal is to produce bigger clouds.

4. Warm Vape

If you’re the kind of vaper who enjoys a nice, warmer vape then you’ll appreciate sub-ohming. 

The low-ohm coils produce warm vapes when the wattage is set high.

3 Components of Sub-Ohm Devices

To practice sub-ohm vaping, you need to have the right devices including:

1. Sub-Ohm Vape Tanks

These are made from stainless steel and glass. They’re great for vapers who can’t build their coils but still want to enjoy sub-ohm vaping.

Sub-ohm tanks have a low resistance coil that is disposable.

2. Rebuildable Tank Atomizers

Rebuildable tank atomizers (RTAs) are vaping tanks featuring rebuildable decks and require users to build their own coils. 

When using RTAs, the vape juice is stored in the tank so there’s no need to drip it.

3. Rebuildable Dripping Atomizers

Rebuildable dripping atomizers (RDAs) come with a customized coil so the vaper needs to wrap cotton around the coil. 

These atomizers don’t have a tank since the vape juice is dripped onto the wick until properly saturated.

Cloud Chasing

Most vapers into cloud chasing use a sub-ohm vape pen. They are safe and come with a powerful battery and tank.

This type of vape pen produces large clouds and is an all-in-one device perfect for beginners. 

For more experienced vapers, an advanced option would be a high-wattage box mod.

Tips for creating greater clouds with sub-ohm vapes include:

  1. Using the right batteries. Those with high amp ratings ensure there’s adequate airflow by adjusting it to its most open setting.
  2. Using a forceful, fast draw. The speed with which you drag not only increases the cloud production but also keeps your coils cool.
  3. Using coils that have a rating of 0.5 ohms and below. They’re able to handle bigger clouds.
  4. Using e-juice with a higher VG ratio.
  5. Choosing a mod that has high power, above 40 watts. You may not be able to use up all the power, but it’s worth having that power headroom for good vapor volume.


Sub-ohm vaping has gained in popularity since it involves using a specialized vaping device. It also provides a great vaping experience through the creation of thicker clouds and stronger, more flavorful vapes.

This unique vaping method has more advantages than drawbacks. It’s a great option to consider if you’re looking for a new kind of vaping experience.