Sub-Ohm Vaping And You
Return to Vaping Blog

Businessman working with computerTrending today is sub-ohm vaping, and vapers want to learn more.


“Ohm’s Law” says that all electricity should never be taken lightly. First, do no harm to yourself. Practice safe vaping because an ohm is a measure of electricity.


Previous e-cigs, atomizers and cartomizers had a range of 1.5-2.8 ohms. Sub-ohm mods use atomizer coils which produce resistance of less than 1.0 ohm, and produce bigger clouds, intensified flavor, and hotter vaper. Non-variable voltage sources, like a battery, produce more wattage by lowering the resistance of a circuit.


Older mods used a rebuildable atomizer to produce the coils. Newer tanks allow consumers to vape at sub-ohm levels without rebuilding. Newer tanks produce the effects of a rebuildable dripping atomizer.


There was a time when vapers had to use rebuildable atomizers to devise their own sub-ohm coils from wicking materials like cotton or kanthal wire creating unregulated mods. These used a 18650 battery for power and heating of the atomizer coil. Now regulated box mods and sub-ohm tanks are used instead. Regulated mods have safety restrictions that prevent them from firing an atomizer at too low of a resistance.


There are three sub-ohm vaping methods:


Rebuildable Tank Atomizers (RBA, RTA):


Build your own coils without dripping. An RBA is a clearomizer. The user must build the coil(s). RBA users can custom design any coil they desire and produce a unique vaping experience. Not all RBAs are for sub-ohming. Some RBAs don’t have the airflow controls or the insulation necessary for sub-ohm vaping that would allow the RTA to produce very hot vapor that may burn your lips.


Rebuildable Dripping Atomizers (RDA):

Older model sub-ohm RDA tanks (drippers) were once the only way to create a sub-ohm experience. They were used with mechanical or box mods. Drippers are usually smaller than tank atomizers. Ejuice is dripped onto the coil and wick, and then re-dripped every few puffs.


Sub-Ohm Experience:


Sub-Ohm vaping is similar to RBA vaping, but uses manufactured disposable coils. There are also sub-ohm tanks that have optional RBA heads. Use pre-built coil heads or you can build your own. This technology is the same for the newer mods.




There are pros and cons to everything. The pro’s for sub-ohming include bigger clouds, hotter vapor, and favorable intense flavor.   The RDAs, RBAs, and sub-ohm tanks have airflow controls that cool the e-juice. This avoids injury. The juices burn hotter, but they also taste fuller, richer, and more intense creating a more satisfying vape experience.


One negative might be the powerful mouth-to-lung hit, but some love that added ‘kick’. Another possible negative is trying to sneak a vape break at work. Billowing plumes are hard to hide. Plus, sub-ohm tanks use more e-juice, so it’s more expensive.  


But, newer sub-ohm tanks are much safer and reliable. The newbie should know what they are doing before starting. More power requires caution. Follow instructions explicitly including battery size.


What is Sub-Ohm Vaping, and Why Should You Care?