What is sub-ohm vaping? Simply put it is vaping on a device whose atomizer coils have a resistance of less than one ohm. The reason some advanced vapers “sub-ohm” is to increase the power output of fixed voltage devices like mechanical vape mods and non-variable regulated devices to create more vapor or flavor. Although it might sound simple it's actually a complex and often controversial topic within the vaping community. The goal of this guide is to make sure you have accurate information so you can decide if sub-ohm vaping is right for you.