Key takeaways
- Two distinctions, closely linked: open vs closed (can you refill the pod and change the coil?) and refillable vs prefilled (do you fill the pod yourself, or buy it ready-filled?).
- Closed = prefilled. Factory-sealed pods you click in and replace when empty. Maximum convenience, but you’re locked to one brand’s flavors and it costs more per mL.
- Open = refillable. Empty pods you fill with any e-liquid you like and re-coil. Huge flavor and nicotine choice, much cheaper to run, greener — at the cost of a tiny bit of filling and priming.
- Open refillables dominate the market today — they’re what most people move on to. Closed prefilled systems are a smaller, convenience-first category.
- Choose open/refillable for flavor freedom and long-term savings (most people); closed/prefilled for the absolute least effort.
Shopping for a pod vape, you’ll run into two pairs of words that sound different but overlap: open vs closed and refillable vs prefilled. They trip people up because they’re closely related — but they’re not quite the same thing. Here’s what each means, how they differ, what they cost, and which is right for you.
The quick version
- Open pod system → refillable pods. You fill the pod with your own e-liquid and usually change the coil (or the pod). Flexible and cheap to run.
- Closed pod system → prefilled pods. You buy sealed, ready-filled pods, click one in, and replace it when empty. Simple and convenient.
In practice, “open” almost always means “refillable,” and “closed” almost always means “prefilled” — which is why the terms get used interchangeably. The distinction below matters when you want to be precise.
What is a closed pod system (prefilled)?
A closed pod system uses prefilled, factory-sealed pods. You pick a flavor from the manufacturer’s range, click the pod into the battery, vape it, and replace the whole pod when it’s empty — no refilling, no coil changes.
Pros:
- The easiest possible vaping — no e-liquid to handle, no filling, no priming.
- Consistent — every pod performs the same.
- Great for absolute beginners or anyone stepping straight off disposables who wants zero fuss.
Cons:
- Brand lock-in — the pods only fit that device, so you’re stuck with one brand’s flavors and nicotine strengths.
- More expensive to run — prefilled pods cost more per mL than a bottle of e-liquid.
- Less choice — no mixing flavors, no nicotine salts from other makers, no adjusting strength. (Juul is the classic closed, prefilled example.)
What is an open pod system (refillable)?
An open pod system uses refillable pods with a fill port. You buy e-liquid separately, fill the pod yourself, prime the coil, and vape — refilling many times, and changing the coil (or the whole pod) when it wears out.
Pros:
- Total flavor and nicotine freedom — any e-liquid, any brand, any strength, any PG/VG or salt you like.
- Much cheaper to run — a bottle of e-liquid costs a fraction of the equivalent in prefilled pods.
- Greener — far fewer plastic pods thrown away.
Cons:
- A small learning curve — filling (without overfilling and leaking) and priming a new coil take a minute to get the hang of.
- You carry a bottle of e-liquid for top-ups.
Most refillable pods are open systems, and they’re what the majority of vapers use today — see our best pod vapes guide for examples.
Open/closed vs refillable/prefilled — are they the same?
Almost, but not exactly — and this is the bit brand blogs gloss over:
- Open vs closed technically describes whether the system lets you refill and re-coil (open) or seals you into prefilled pods (closed).
- Refillable vs prefilled describes the pod itself — whether it comes empty for you to fill, or ready-filled.
They line up nearly every time (open = refillable, closed = prefilled), so you can treat them as the same in practice. The edge cases are rare — the odd device that takes both prefilled and refillable pods — so for choosing a pod, just remember: open/refillable = freedom and savings; closed/prefilled = pure convenience.
Open (refillable) vs closed (prefilled) at a glance
| Open / Refillable | Closed / Prefilled | |
|---|---|---|
| E-liquid | Fill with any e-liquid | Buy sealed prefilled pods |
| Coils | Change the coil or pod | Replace the whole pod |
| Flavor choice | Unlimited (any brand) | Limited to the brand |
| Nicotine control | Any strength / salts | Brand’s fixed options |
| Running cost | Low (bottle of juice) | Higher (per mL) |
| Waste | Less | More (whole pod each time) |
| Ease | Small learning curve | Easiest — click and go |
| Best for | Most vapers; flavor + savings | Total-simplicity, straight off disposables |
What about the cost?
This is where open pulls ahead. Prefilled pods are convenient, but you pay for it every time you replace one. With a refillable pod, a single bottle of e-liquid refills a pod many times for a fraction of the price — so open systems typically start saving money within the first month and keep saving after that. If running cost matters to you at all, refillable wins comfortably; if you’ll pay a premium for never touching e-liquid, closed makes sense.
My Experience: start on prefilled — but refillable is where the value is
For a beginner, the obvious place to start is a closed, prefilled pod — you get the same grab-and-go ease as a disposable, without the waste. In the UK especially, brands have put out some genuinely excellent prefilled systems to fill the gap the disposable ban left behind, and there’s real innovation happening — the new SKE bars, like the SKE 15k Bar, are a great example.
That said, for my money the best bang for your buck — and the better overall vape — is a good open, refillable pod. You get far more flexibility and versatility, and practically any of the best refillable pods we recommend deliver exceptional flavor with pretty solid coil life. So you’re not just getting a better vape, it works out more cost-effective too. I’ve genuinely enjoyed testing loads of prefilled pods over the years — but I still always come back to my NeXLIM or XROS, purely for the vape quality.
Which should you choose?
- Choose an open, refillable pod if you want flavor and nicotine freedom, the lowest running cost, and less waste — which describes most vapers, especially anyone who’s found their preferred e-liquids. The bit of filling and priming is easy once you’ve done it a couple of times.
- Choose a closed, prefilled pod if you want the absolute least effort — no e-liquid, no filling, just click and vape — and don’t mind paying more and being tied to one brand’s flavors. It’s a good, gentle step straight off disposables.
For most people moving beyond disposables, an open, refillable pod is the sweet spot. New to all this? Our what is a pod vape explainer and beginner’s guide are the place to start.
FAQ
What’s the difference between an open and closed pod system?
An open system lets you refill the pod with your own e-liquid and change the coil; a closed system uses prefilled, sealed pods you replace when empty. Open means flavor freedom and lower cost; closed means maximum convenience.
Are refillable and prefilled the same as open and closed?
Nearly. Open systems use refillable pods; closed systems use prefilled pods, so the terms line up almost every time. Strictly, open/closed describes the system and refillable/prefilled describes the pod, but in practice they mean the same choice.
Are open (refillable) pods cheaper than closed (prefilled) ones?
Yes, usually much cheaper to run — a bottle of e-liquid refills a pod many times for far less than the cost of replacing prefilled pods. Open systems typically start saving money within the first month.
Which is better for a beginner?
Both work, but a closed/prefilled pod is the simplest first step (no e-liquid to handle), while an open/refillable pod is only slightly more involved and saves money and offers far more flavor. Many people go straight to refillable and never look back.
Can you refill a closed / prefilled pod?
They’re not designed to be refilled, and doing so is fiddly and often leaks or ruins the pod — much like refilling a disposable. If you want to refill, buy an open/refillable pod system instead.
