Sub-Ohm vs. Plus-Ohm:
The 2026 Technical SOP

Vaping Fundamentals  •  Thermal Extraction Guide

They each work in very different ways and can be tweaked for different results. In this section, we’ll tell you everything you need to know about both styles to help you make an informed choice about what’s best for you. Some of the terminology might seem off-putting at first, but don’t worry — we’ll explain things clearly and simply. If you have any questions, be sure to comment below!

What Exactly Are Plus-Ohm and Sub-Ohm Vaping?

With sub-ohm or regular ohm vaping, it all comes down to the kind of tank you’re using — or more specifically, the coil inside that tank. Each coil carries its own ohm rating, usually printed on the side. The ohm is a unit of electrical resistance. To put it simply: if the coil is rated below 1 ohm, it’s sub-ohm; if it’s rated above 1 ohm, it’s plus-ohm. That simple difference produces dramatically different vaping experiences. Let’s look at each in turn.

Plus-Ohm Vaping

When a coil has high resistance — say, 1.8 ohms — it resists more power from the battery, takes longer to heat up, and vaporizes your e-juice at a slower rate compared to a sub-ohm coil. Because less power is required, batteries for plus-ohm vaping don’t need to be large or powerful, allowing for compact and discreet devices.

All Cig-A-Likes and early e-cigarette models are plus-ohm, since their batteries were simply too small to power anything other than a high-resistance coil. The lower heat means you inhale less vapor overall, but that doesn’t make the experience substandard. In fact, there are genuine advantages: improved flavor nuance and a more intense throat hit are two commonly cited benefits. Plus-ohm vaping is most naturally suited to a style of inhale known as Mouth to Lung (MTL).

MTL vaping works exactly as you’d expect: you take a drag and hold the vapor in your mouth, then after a brief pause, inhale it deep into your lungs along with a fresh breath of air. If you’re a smoker, you’ll immediately recognize this technique — it closely mimics the way you take a puff on a cigarette. This familiarity is one of the key appeals of plus-ohm vaping, and we’ll examine its other advantages and disadvantages in detail below.

Sub-Ohm Vaping

Sub-ohm coils have lower electrical resistance, which means they heat e-liquid faster and more powerfully. This creates a dramatically different sensation from plus-ohm vaping — significantly more vapor production, a warmer hit, and a more substantial mouthfeel. Sub-ohm vaping is a relatively recent development that only became widespread as vape technology advanced enough to support it safely.

Because sub-ohm setups demand more power, batteries need to be larger, and battery safety becomes a more pressing concern. Sub-ohm vaping lends itself naturally to the Direct Lung Inhale (DLI) style of draw.

DLI is when you take a drag and pull the vapor straight down into your lungs in one motion — similar to taking a deep, deliberate breath. If you’ve ever used a bong or shisha pipe, you’ll recognize the sensation. The hit from DLI can be far more intense than MTL, and its fans argue it’s considerably more satisfying. We’ll examine the full pros and cons of sub-ohm vaping below.

Pros and Cons of Plus-Ohm Vaping

Pros

More Flavor — The MTL style of inhale keeps vapor in contact with your taste buds for longer, enhancing the sensation of flavor. Additionally, e-juice formulated for plus-ohm vaping carries flavor more effectively due to its higher Propylene Glycol (PG) content — we’ll cover this in more detail in the e-juice section of our beginner’s guide.

Most Like Smoking — Plus-ohm vaping supports higher nicotine concentrations, making it especially useful for people transitioning away from cigarettes. The higher PG content and nicotine levels also produce a satisfying throat hit that closely resembles the sensation of smoking tobacco.

Cooler Vape — A hot vape can be uncomfortable to inhale, but the lower power levels involved in plus-ohm vaping make for a reliably cool and smooth draw.

Uses Less E-Liquid — The slower inhalation style and lower battery output mean your e-liquid lasts considerably longer between refills.

Discreet — A typical plus-ohm setup is compact and slim, since the battery doesn’t need to be especially powerful. And because they produce less vapor, these devices attract far less attention in public.

Cons

Less Vapor — Because less vapor is produced, some users may find the physical sensation from a plus-ohm kit underwhelming, especially if they’re chasing a stronger hit.

Fewer Recent Innovations — Current trends in vaping have been firmly oriented around sub-ohm technology, meaning there have been relatively few major hardware innovations in the plus-ohm space in recent years.

Pros and Cons of Sub-Ohm Vaping

Pros

Deeply Satisfying — Many smokers and ex-smokers gravitate toward sub-ohm vaping because it delivers a powerful, lung-filling hit that creates a more intense and gratifying experience overall.

Impressive Clouds — If you’ve watched vapers produce enormous plumes of vapor and want to do the same, a sub-ohm setup is exactly what you need.

Coils Last Longer — Sub-ohm coils, such as those used with the Smok TFV4, tend to be physically larger and sometimes contain multiple coils within a single head. This means they can last a long time — in some cases, several weeks — before needing replacement.

Cons

Can Be Overwhelming — The sheer volume of vapor produced by sub-ohm devices can be too intense for inexperienced users, causing coughing fits that may put newcomers off before they’ve had a chance to explore more forgiving alternatives.

Drains Power and E-Liquid — The higher power demands of sub-ohm vaping drain batteries faster, so having a backup is advisable. These setups also burn through e-liquid at a noticeably quicker rate, since more juice is being heated to produce larger vapor volumes.

Dry Hits — Dry hits are an unavoidable reality in vaping. They occur when the tank runs dry without the vaper noticing — the mod then fires and burns the cotton wick instead of the e-liquid. The resulting taste is extremely unpleasant, and on a sub-ohm setup the experience is many times harsher than on a standard device.

Requires Battery Knowledge — To use a sub-ohm setup safely, you need a working understanding of battery safety. The batteries required to power sub-ohm tanks are larger, more powerful, and naturally more expensive than those used in entry-level setups.

What Should You Choose?

Choosing the right setup ultimately comes down to a few key factors.

Experience Level — If you’re brand new to vaping, we recommend starting with a straightforward plus-ohm setup, or even a Cig-A-Like. Once vaping feels natural to you, progressing to sub-ohm is a logical next step. We’ll cover this in more detail in the final part of our beginner’s guide, where we discuss recommended starter kits.

Allergies — The ingredients in your preferred e-juice can also be a deciding factor. A small number of people have a sensitivity to the PG used in plus-ohm e-liquids and require a 100% VG juice instead — and high-VG juices can only be used effectively in sub-ohm tanks. We examine e-juice components in greater detail in the next section of this guide.

Type of E-Liquid — Some e-juices are only compatible with sub-ohm tanks, while others work best in plus-ohm setups. High-VG juice struggles to properly saturate the wicks in plus-ohm coils, so if your preferred brand only produces high-VG blends, a sub-ohm tank is your only real option. Flavor profiles can also guide your choice: tart, tangy fruit flavors and tobacco tend to shine in plus-ohm tanks, while thick, creamy, and dessert-based flavors perform better at sub-ohm wattages.

Nicotine Level — Most sub-ohm e-liquids are formulated with low nicotine concentrations — typically 6mg and below — because inhaling higher levels via a powerful sub-ohm hit can cause dizziness and nausea. Plus-ohm juice offers a wider range of nicotine strengths, giving you greater control over your intake.

Cloud Chasing — Cloud chasing and vape tricks are a popular pursuit within the vaping community, with worldwide competitions dedicated to the biggest clouds and most impressive maneuvers. If that appeals to you, sub-ohm vaping is the only path — ideally with zero-nicotine juice.

What Else Should I Be Aware Of?

Etiquette — While blowing large clouds on a sub-ohm setup can be enormously satisfying, it’s important to stay aware of your surroundings. Doing it in public spaces tends to draw disapproval and can negatively reflect on the broader vaping community.

Adaptability — There are practical ways to fine-tune your vaping experience across both styles. Fitting a narrow drip tip and restricting the airhole on a sub-ohm device can enable a tighter, MTL-style draw that feels closer to plus-ohm vaping. Conversely, using a wide-bore drip tip with fully open airholes on a plus-ohm tank can produce an airy draw that works for DLI. Vaping hardware is versatile, and there’s considerable room to adjust your setup to match your personal preferences.

Try Both — Many experienced vapers don’t limit themselves to a single style and keep both sub-ohm and plus-ohm tanks to use in different contexts. Some tanks — such as the Kanger Subtank and the Aspire Triton — even support both coil types within the same device. This is an ideal starting point for vapers who want to explore both styles without committing to two entirely separate setups.

Conclusion

In this section, we’ve looked at the two main styles of vaping and the advantages and disadvantages of each. While we recommend that beginners start with plus-ohm vaping before progressing to sub-ohm, if this guide has made the sub-ohm experience sound more appealing to you from the outset, we’d suggest visiting your local brick-and-mortar vape shop first. Ask to try it in person and get hands-on guidance on how to use it safely.

Given the higher cost and battery knowledge required for sub-ohm vaping, we advise against it as an entry point into the hobby. That said, it’s absolutely worth exploring both methods over time. Vaping is fundamentally about finding your personal preference, and experimenting with different ohm levels is the best way to find your sweet spot.

We’ll provide a comprehensive guide to the best sub-ohm and plus-ohm setups in a later part of this guide. In the meantime, if you’d like to go deeper on sub-ohm vaping right now, you can read our more advanced article here.