You buy a vape, fill the pod, take a puff and cough like you've just inhaled half the room. Your friend picks up exactly the same vape and has no problem at all.
What's going on? Sometimes the problem isn't the vape — it's how you're inhaling it.
There are three main vaping styles you'll see mentioned when shopping for vape kits, pods, coils and e-liquids:
- MTL: Mouth to Lung
- DTL: Direct to Lung
- RDL: Restricted Direct to Lung
They aren't simply three pieces of vape-shop jargon — the style you use affects almost everything: how you inhale, airflow, coil resistance, power, nicotine strength, e-liquid choice, vapour production and how the vape feels.
If you're switching from cigarettes, MTL will usually feel the most familiar. If you prefer a much airier draw and considerably larger clouds, you're probably looking for DTL. RDL sits somewhere between the two.
Here's how to tell them apart.
MTL vs DTL vs RDL: Quick Comparison
| Feature | MTL | RDL | DTL |
|---|---|---|---|
| Full name | Mouth to Lung | Restricted Direct to Lung | Direct to Lung |
| How you inhale | Mouth first, then lungs | Directly to lungs through restricted airflow | Directly to lungs |
| Draw | Tight | Medium/loose | Very airy |
| Feels closest to | Cigarette | Middle ground | Deep breath |
| Vapour | Low | Medium | High |
| Typical power | Low | Low-medium | Medium-high |
| Typical coil | Higher resistance | Medium/lower resistance | Lower resistance |
| E-liquid | Often 50/50 | Often 50/50 or higher VG | Usually higher VG |
| Nicotine | Can accommodate higher strengths | Usually lower/moderate | Usually low |
| Nic salts | Very common | Possible at appropriate lower strengths | High-strength salts generally unsuitable |
| Battery use | Lowest | Moderate | Highest |
| E-liquid use | Lowest | Moderate | Highest |
| Beginner friendly | Very | Usually | Less so |
| Best for | Smokers switching, discreet vaping | More vapour without full DTL | Large vapour and open draw |
One important warning before we go further: those coil and power descriptions are guidelines, not laws.
Modern pod devices blur the boundaries considerably. A 0.6Ω pod might provide RDL on one device and a loose MTL vape on another depending on wattage and airflow — coil resistance alone doesn't decide your vaping style.
What Is MTL Vaping?
MTL stands for Mouth to Lung — you take the vapour into your mouth first, pause briefly and then inhale it into your lungs.
If you've smoked cigarettes before, you've probably already used something very close to an MTL inhale without ever giving it a name.
How to MTL Vape
Try it like this:
- Put the mouthpiece between your lips.
- Take a slow, gentle draw.
- Hold the vapour in your mouth briefly.
- Inhale it into your lungs.
- Exhale normally.
It's a two-stage inhale. You don't need to pull particularly hard or take an enormous puff — think sipping through a straw rather than taking a giant breath.
Vape Superstore similarly describes MTL as drawing vapour into the mouth before inhaling it into the lungs, with a tighter and generally more restrained experience.
What Does an MTL Vape Feel Like?
The easiest description is: tight and controlled.
There's noticeable resistance when you inhale, rather like taking a drag from a cigarette.
An MTL setup normally gives you:
- tighter airflow
- smaller clouds
- cooler vapour
- lower power
- slower e-liquid consumption
- longer battery life
- the option to use higher nicotine strengths
- a more discreet vaping experience
That makes MTL especially relevant to adult smokers making the transition to vaping.
The NHS recommends compact pod devices, vape pens and similar small-cloud devices as suitable options for people using vaping to quit smoking. It also stresses the importance of choosing enough nicotine to control cigarette cravings.
Who Is MTL Vaping Best For?
MTL is worth considering if:
- you're switching from cigarettes
- you want a familiar inhaling technique
- you use nic salts
- you need a relatively high nicotine strength
- you prefer smaller clouds
- you want a compact pod vape
- battery life matters
- you don't want to use large amounts of e-liquid
- you like a tighter draw
That doesn't mean MTL is "beginner vaping" that you eventually graduate from. Plenty of experienced vapers prefer MTL permanently — it's a vaping style, not a difficulty level.
What Coil Resistance Is Best for MTL?
This is where vape advice online becomes unnecessarily rigid. You'll often see:
"MTL means 1.0Ω or above."
That used to be a useful shortcut, but modern pod systems have made it much less reliable.
Many MTL setups still use pods and coils around:
0.8Ω to 1.2Ω
Vaporesso, for example, lists 0.8Ω-1.2Ω as a typical MTL range in its current draw-style guidance. But a modern 0.6Ω or 0.7Ω pod can sometimes be configured for a loose MTL inhale too.
So instead of looking only at the number printed on the coil, check:
- manufacturer's recommended style
- wattage
- airflow
- vapour production
- nicotine strength
- recommended PG/VG ratio
Resistance is one part of the setup, not the definition of MTL.
Which E-Liquid Is Best for MTL Vaping?
Most MTL devices work particularly well with relatively thin e-liquids. A common starting point is:
50VG / 50PG
This ratio tends to wick efficiently through smaller MTL coils while producing a manageable amount of vapour.
MTL also works naturally with:
- nicotine salts
- 10ml freebase e-liquids
- 50/50 liquids
Very thick high-VG shortfills may not wick properly in some small MTL pods, so always check the manufacturer's recommendation before filling the device.
Can You Use Nic Salts for MTL Vaping?
Yes — in fact, MTL and nic salts are one of the most common combinations in modern vaping.
The reason makes sense: MTL produces relatively small amounts of vapour per puff, while nic salts are commonly available at higher nicotine concentrations.
Someone switching from cigarettes can therefore use a compact device and still choose a nicotine strength appropriate to their previous smoking habits.
We've explained the chemistry and strengths in more detail in our What Are Nic Salts? guide.
What Is DTL Vaping?
DTL stands for Direct to Lung, sometimes written as DL or direct lung vaping. Instead of pulling vapour into your mouth first, you breathe it directly into your lungs — it's one continuous inhale.
Imagine taking a deep breath through your mouth — that's much closer to the DTL technique.
How to DTL Vape
- Open the airflow appropriately.
- Place your lips around the mouthpiece.
- Take a slow, deep inhale directly into your lungs.
- Don't hold the vapour in your mouth first.
- Exhale.
The draw should feel considerably more open than MTL. Trying to use a tight cigarette-style puff on a powerful DTL vape is one of the quickest ways to have a thoroughly unpleasant first experience.
What Does DTL Vaping Feel Like?
DTL feels: open, airy and vapour-heavy.
The device allows much more air through the coil while typically vaporising considerably more e-liquid. The result is usually:
- larger clouds
- warmer vapour
- longer inhalations
- looser airflow
- higher power
- increased e-liquid consumption
- increased battery consumption
- lower nicotine strengths
Vape Superstore's current guide also characterises DTL as a continuous direct inhale that generally uses more powerful equipment and higher-VG liquids to create considerably more vapour.
Who Is DTL Vaping Best For?
DTL might suit you if:
- you enjoy a very open draw
- you want substantially more vapour
- you prefer lower nicotine strengths
- you use shortfill e-liquids
- you don't mind a larger device
- you're comfortable adjusting wattage and airflow
- battery life isn't your main concern
- you're happy using more e-liquid
It tends to appeal more to experienced vapers than people who have just stopped smoking, although there's no rule saying beginners cannot use DTL — it's simply quite different from smoking a cigarette.
What Is a Sub-Ohm Vape?
You'll hear DTL and sub-ohm mentioned together constantly. Sub-ohm simply means the coil resistance is below 1.0 ohm (Ω).
Historically, low-resistance coils were primarily associated with powerful DTL devices, but that's no longer the whole picture. Modern pods routinely use:
- 0.4Ω
- 0.6Ω
- 0.8Ω
And depending on their design, they can provide anything from RDL to loose MTL.
So: all sub-ohm vaping is not automatically DTL vaping.
A 0.8Ω pod is technically sub-ohm, but nobody would reasonably describe every 0.8Ω pod as a cloud-chasing DTL vape. This is another reason resistance should be treated as one variable rather than the complete answer.
Which E-Liquid Is Best for DTL?
DTL devices generally work better with thicker, higher-VG e-liquids. Common examples include:
- 70VG/30PG
- 80VG/20PG
- some other high-VG shortfills
VG stands for vegetable glycerine and is responsible for much of an e-liquid's vapour production. Because DTL devices vaporise much more liquid per puff, they typically use considerably lower nicotine concentrations.
A common setup might involve:
3mg freebase nicotine + 70VG shortfill + sub-ohm tank
rather than:
20mg nic salt + powerful DTL tank
Those two combinations deliver completely different amounts of vapour.
Can You Use Nic Salts for DTL Vaping?
This needs a more careful answer than simply "no".
Nicotine concentration matters enormously. A high-powered DTL device vaporises much more liquid in a single inhalation than a small MTL pod.
That means using a standard 10mg or 20mg nic salt in a powerful sub-ohm setup can make the nicotine intake per puff far more intense than intended. For that reason, strong nic salts are normally paired with lower-powered MTL equipment rather than cloud-producing DTL kits.
Some lower-strength salt formulations exist, but you should always match:
nicotine concentration + coil + wattage + vapour output
rather than choosing your liquid in isolation.
What Is RDL Vaping?
Now we reach the category that confuses almost everyone.
RDL stands for Restricted Direct to Lung. You'll sometimes also see:
- RDTL
- restricted DTL
- restricted lung vaping
They generally refer to the same basic style. You inhale directly into your lungs, just as you would with DTL, but the airflow is deliberately tighter.
So you get more airflow than MTL, less airflow than DTL.
That's why RDL is often described as the middle ground between the two. Vape Superstore uses essentially the same definition, describing RDL as direct lung inhalation with tighter airflow and lower power than full DTL.
How Do You RDL Vape?
The technique is closer to DTL than MTL.
- Put your lips around the mouthpiece.
- Take a controlled inhale directly into your lungs.
- Don't hold the vapour in your mouth first.
- Use a slower or slightly shorter inhale than you might with full DTL.
- Exhale normally.
The resistance should be noticeable, but it shouldn't feel as tight as a cigarette-style MTL draw. Think of it as breathing through a wide straw rather than either a tiny straw or a completely open tube.
What Does RDL Vaping Feel Like?
RDL usually gives you:
- moderately open airflow
- medium-sized clouds
- more vapour than MTL
- less vapour than DTL
- warmer vapour than many MTL setups
- moderate power
- good flavour intensity
- relatively compact devices
That's one reason RDL has become common in modern refillable pod kits. A single device may come with:
- 0.8Ω pod for MTL
- 0.6Ω pod for RDL
- 0.4Ω pod for looser RDL
and an airflow slider that lets you tune the draw even further.
Vaporesso's current guidance similarly describes RDL as the middle point between MTL and DTL, although the precise coil range varies between devices.
What Coil Resistance Is Best for RDL?
There is no universal RDL resistance — and that's important.
You'll commonly see modern RDL pods around:
0.4Ω to 0.8Ω
But that should be treated as a rough guide only — for example, one manufacturer may design its 0.6Ω pod specifically for RDL, while another device might allow the same resistance to provide a relatively loose MTL experience.
Airflow and wattage matter just as much.
Don't Shop by Ohms Alone
If you're choosing between two pods: 0.6Ω doesn't automatically mean RDL.
Check how the manufacturer describes it. Look at:
- recommended wattage
- airflow
- e-liquid compatibility
- nicotine recommendation
- intended inhale style
That will tell you much more than resistance alone.
MTL vs RDL: What's the Difference?
This is probably the most useful comparison for today's refillable pod users.
| Feature | MTL | RDL |
|---|---|---|
| Inhale | Mouth, then lungs | Straight into lungs |
| Airflow | Tight | Moderately open |
| Vapour | Small | Medium |
| Nicotine | Higher strengths possible | Usually lower |
| Device power | Lower | Higher |
| Coil | Usually higher resistance | Usually lower resistance |
| E-liquid use | Low | Moderate |
| Cigarette-like? | Yes | Less so |
| Cloud production | Low | Medium |
The biggest difference isn't really the coil — it's the inhale.
MTL is two-stage. RDL is direct.
RDL vs DTL: What's the Difference?
Both involve inhaling vapour directly into your lungs. The difference is how much air you're getting.
RDL
Controlled airflow. Smaller inhale. Moderate vapour.
DTL
Very open airflow. Deep inhale. Large amounts of vapour.
If DTL feels like taking a big breath through your mouth, RDL feels like you're taking that same breath through a slightly restricted opening.
MTL vs DTL: What's the Biggest Difference?
Here's the easiest test.
MTL
Mouth → pause → lungs
DTL
Straight → lungs
That's the fundamental difference. Everything else, including coil resistance, wattage, nicotine and VG level, follows from the amount of vapour each technique is designed to handle.
What Is a Throat Hit?
You might also hear people describe vaping as a choice between a throat hit and lung hit. It's a useful phrase, but it can be misleading.
A throat hit is the sensation you feel at the back of your throat when inhaling. It can be influenced by:
- nicotine strength
- nicotine type
- PG concentration
- flavour
- menthol or cooling agents
- vapour temperature
- airflow
- wattage
So MTL doesn't automatically mean stronger throat hit and DTL doesn't automatically mean weaker throat hit — the entire setup matters.
For example, a 20mg nic salt MTL vape and a 3mg high-VG DTL vape will feel radically different even though both ultimately deliver vapour to your lungs.
The competitor places substantial emphasis on throat hit in its MTL/DTL comparison. For a beginner, however, it is more useful to understand throat hit as a product of the whole setup rather than the inhale technique alone.
Does More PG Give a Stronger Throat Hit?
Generally, PG-heavy liquids tend to produce a more noticeable throat sensation than very high-VG formulations. That is one reason you'll often find:
MTL → 50/50 liquids
and:
DTL → high-VG liquids
But nicotine strength can make an even bigger difference. A high-strength freebase nicotine liquid can feel considerably harsher than a low-strength high-VG shortfill.
Which Style Produces the Most Vapour?
From least to most:
MTL → RDL → DTL
A rough way of visualising it:
MTL
Small cloud.
RDL
Noticeable cloud.
DTL
Large, dense cloud.
If you're trying to vape discreetly, full DTL probably isn't the obvious choice. If you're specifically interested in vapour production, MTL probably isn't either.
Which Vaping Style Uses the Most E-Liquid?
Again: DTL uses the most.
Why? Because a high-powered DTL coil vaporises substantially more liquid during each puff.
A typical ranking is:
- MTL: lowest consumption
- RDL: moderate consumption
- DTL: highest consumption
This can make a noticeable difference to running costs. If you're moving from MTL to DTL, don't be surprised when your 10ml bottle suddenly doesn't seem to last very long.
Which Style Uses the Most Battery?
Usually DTL — higher-power coils need more electrical power.
So all else being equal:
- MTL devices usually give longer battery life.
- RDL sits in the middle.
- DTL devices typically compensate by using larger batteries or replaceable vape batteries.
Which Vaping Style Gives the Most Flavour?
Here's one topic on which vapers could argue all afternoon — there isn't a simple winner.
MTL can give you a concentrated, controlled flavour experience with relatively small amounts of vapour, while DTL produces far more vapour, which can make flavours feel fuller and more intense.
RDL offers a balance between the two.
But flavour depends enormously on:
- coil design
- mesh surface
- liquid
- wattage
- airflow
- device
- temperature
So don't choose your entire inhaling style because someone told you one produces "better flavour".
Which Vaping Style Is Best for Ex-Smokers?
For somebody who has just stopped smoking, MTL is usually the easiest style to understand.
Not because MTL is medically superior — simply because the physical action is familiar.
Cigarette smokers are accustomed to:
- drawing into the mouth
- then inhaling
MTL uses the same basic motion. It also works well with compact pod devices and nicotine strengths sufficient to control cigarette cravings, which aligns with current NHS guidance for people using vaping as a stop-smoking tool.
Once you've stopped smoking, there's nothing preventing you from experimenting with RDL later if you prefer a looser draw.
Which Style Should a Beginner Choose?
Start by answering one question: what do you want the inhale to feel like?
Choose MTL if:
You want something close to a cigarette.
Choose RDL if:
You want a little more air and vapour without jumping to a full cloud setup.
Choose DTL if:
You specifically want an open inhale and large amounts of vapour.
If you're an adult smoker trying vaping specifically as an alternative to cigarettes, MTL is usually the simplest starting point.
How Do I Know if My Vape Is MTL, RDL or DTL?
Look at four things.
1. The Mouthpiece
A small, narrow mouthpiece often suggests MTL, while a large open mouthpiece often points towards DTL. Not always, but it's a useful clue.
2. The Airflow
- Tight airflow: MTL
- Medium airflow: RDL
- Very open airflow: DTL
3. Coil or Pod Description
Manufacturers increasingly tell you directly whether a coil is intended for MTL, RDL or DTL. Trust that over random internet resistance charts.
4. Wattage
Lower-powered setups usually lean MTL, moderate power often means RDL, and higher wattage is more commonly associated with DTL. Again, there is overlap.
Can One Vape Do MTL, RDL and DTL?
Some can. Modern pod mods and adjustable-airflow devices may support several coil resistances and power ranges. For example, changing:
- pod
- coil
- airflow
- wattage
- e-liquid
can completely change how one device behaves.
A versatile kit might support MTL and RDL particularly well, and some larger pod mods can go all the way from tight MTL through to full DTL. That flexibility is useful if you're still figuring out what you like.
How Does Airflow Change Your Vape?
Airflow is one of the easiest adjustments you can make.
Close the airflow:
- tighter draw
- more resistance
- more MTL-like
Open the airflow:
- looser draw
- more cooling air
- more RDL/DTL-like
But don't treat airflow as completely independent from your coil. A coil designed for 50W DTL vaping isn't suddenly an ideal MTL coil because you've closed every airflow hole. The components need to work together.
Common MTL, RDL and DTL Mistakes
| Problem | Likely Reason | What to Check |
|---|---|---|
| Coughing immediately | Wrong inhale style or too much vapour | Airflow, wattage and technique |
| Vape feels too airy | Device is configured for RDL/DTL | Close airflow or change pod |
| Vape feels too tight | MTL coil/setup | Open airflow or try an RDL pod |
| 20mg liquid feels overwhelming | Too much vapour for the nicotine strength | Use appropriate low-power MTL setup |
| Weak nicotine satisfaction | Nicotine may be too low | Match strength to previous smoking |
| Liquid disappears quickly | High-power RDL/DTL setup | Normal with greater vapour production |
| Battery keeps dying | High wattage | Larger battery or lower-powered setup |
| Burnt taste | Coil is dry or power too high | Refill, prime coil and check wattage |
| Vape leaks | Incorrect liquid, worn pod or coil issue | Check liquid and replace pod |
| Little vapour | MTL device being compared with DTL | May be completely normal |
MTL, RDL or DTL: Which One Should You Choose?
There is no winner. They're three answers to three slightly different preferences.
Choose MTL if you want a cigarette-style inhale, smaller clouds, higher nicotine compatibility and a compact setup. Choose RDL if MTL feels too tight but you don't want the airflow, power or vapour of full DTL. Choose DTL if you want an open inhale, lower nicotine, higher-VG liquids and substantially more vapour.
And you don't have to stay in one category forever. It's common for somebody to start with MTL when leaving cigarettes, experiment with a looser 0.6Ω pod and realise they prefer RDL.
Others happily use MTL for years. The right vaping style is simply the one that works comfortably with your device, your liquid and your nicotine requirements.
Final Verdict
If all the acronyms are making this sound more complicated than it is, remember just this:
MTL
Mouth first. Then lungs. Tight draw. Small clouds.
RDL
Straight to lungs, but restricted. Medium draw. Medium clouds.
DTL
Straight to lungs with open airflow. Loose draw. Large clouds.
Everything else is fine-tuning.
Once you know which inhale feels natural, choosing your coil, vape kit, e-liquid and nicotine strength becomes much easier.
Frequently Asked Questions
1. What does MTL mean in vaping?
MTL means Mouth to Lung. You draw vapour into your mouth first and then inhale it into your lungs. It closely resembles the inhaling technique used by many cigarette smokers.
2. What does DTL mean in vaping?
DTL stands for Direct to Lung. Vapour is inhaled directly into your lungs in one continuous breath rather than being held in your mouth first.
3. What does RDL mean in vaping?
RDL means Restricted Direct to Lung. You inhale directly into your lungs like DTL, but the device has tighter airflow, producing a more controlled inhale and moderate vapour.
4. Is RDL the same as RDTL?
Usually, yes. RDL and RDTL are both commonly used to describe Restricted Direct to Lung vaping.
5. Is MTL better for beginners?
MTL is often easier for adult smokers beginning vaping because the inhaling technique feels similar to smoking and works well with compact pod devices.
6. Is MTL better for nic salts?
MTL devices are particularly well suited to nic salts because they produce smaller amounts of vapour and can therefore accommodate higher nicotine concentrations more comfortably than high-powered cloud-producing setups.
7. Can I use 20mg nic salts for DTL?
High-strength 20mg nic salts are generally not appropriate for powerful DTL vaping because DTL devices vaporise much more e-liquid per puff. Use nicotine strengths appropriate for the device and manufacturer recommendations.
8. Is 0.6 ohm MTL or RDL?
It can be either depending on the device. Many current manufacturers use 0.6Ω pods for RDL, but resistance alone doesn't determine vaping style. Airflow and wattage also matter.
9. Is 0.8 ohm MTL or RDL?
0.8Ω is very commonly used for MTL, although some adjustable devices can provide a loose MTL or restricted draw using that resistance. Vaporesso currently places roughly 0.8Ω-1.2Ω within its typical MTL range.
10. Is 1.0 ohm good for MTL?
Yes. A 1.0Ω coil or pod is commonly designed for lower-powered MTL vaping.
11. Is sub-ohm vaping always DTL?
No. Sub-ohm simply means resistance below 1Ω. Modern MTL and RDL pod systems frequently use sub-ohm pods, so coil resistance alone can't tell you the intended inhale style.
12. Which uses more e-liquid, MTL or DTL?
DTL generally uses considerably more e-liquid because it operates at higher power and vaporises more liquid during each inhalation.
13. Which gives bigger clouds, MTL or DTL?
DTL. MTL is designed around smaller, controlled puffs, while DTL devices use greater airflow and power to generate much larger amounts of vapour.
14. Does MTL give a stronger throat hit?
Not automatically. Throat hit is affected by nicotine strength and type, PG/VG ratio, flavour, airflow, temperature and power as well as the inhaling style.
15. Which vaping style is closest to smoking?
MTL. Both typically involve drawing into the mouth before inhaling into the lungs.
16. Can I switch between MTL and RDL?
Yes, provided your device supports appropriate pods or coils and adjustable airflow. Many modern pod kits are specifically designed to support both styles.
17. Can you MTL on a sub-ohm coil?
Yes in some cases. Many modern MTL pods have resistances under 1Ω. "Sub-ohm" no longer automatically means a large DTL tank.
18. What is the best PG/VG ratio for MTL?
A 50VG/50PG liquid is a common choice for modern MTL devices. Always check the recommended liquid ratio for your particular coil or pod.
19. What is the best PG/VG ratio for DTL?
High-VG liquids such as 70VG/30PG are commonly used in DTL and sub-ohm setups because the larger coils are designed to handle thicker e-liquid and greater vapour production.
