Aspire Nautilus Replacement Atomizers (5 Pack) 0.3 Ohm

Overview

The Aspire Nautilus Replacement Atomizers (5 Pack) 0.3 Ohm by Aspire in 0.3 Ohm at 0mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.

What the Aspire Nautilus Replacement Atomizers 5 Pack Is

This listing is for a five-pack of replacement atomizer coil heads made by Aspire for the Nautilus family of refillable tanks. The Nautilus line has stayed on sale for years because it is a simple tank that runs happily on low-wattage devices, and the coil head is the part that does the real work. It holds the heating wire and the cotton wick, it pulls e-liquid out of the tank, and it turns that liquid into vapour each time you press the fire button. It is also the first component to wear out. A five-pack puts spare heads on your shelf, so when the flavour flattens or the coil starts to taste burnt you can swap in a fresh one instead of waiting on a delivery.

Because this is an accessory rather than a complete device, the box contains coils and nothing else. There is no battery, no tank and no e-liquid in the pack. You need an existing Aspire Nautilus tank and a battery device with a standard 510 connection that can fire at the wattage your chosen coil is rated for. Packaging design changes between production batches, so we do not promise a particular box or tray layout, but you should always receive five coil heads.

The listing carries five variants. Aspire makes more than one type of Nautilus coil, and the options on this page are normally split by resistance and by the tank the head is built for. Read the option name before adding to your basket, and use the compatibility section below if you are unsure. We have kept the claims on this page modest on purpose. Coil life, flavour and vapour volume all depend on your e-liquid, your power setting and your vaping habits, so any figure we quote is a typical range rather than a guarantee.

• In the pack: five Aspire Nautilus replacement coil heads.
• Not included: tank, battery, charger or e-liquid.
• Use with: refillable Nautilus-family tanks, with the correct variant for your model.
• Age restriction: sold to adults aged 18 or over only.

Which Nautilus Tanks These Coils Fit

Compatibility is the biggest reason people end up with the wrong coils, so it is worth slowing down here. The Nautilus name covers a group of tanks released over several years, including the original Nautilus, the Nautilus 2, the Nautilus Mini, the Nautilus X, the Nautilus 2S, the Nautilus GT, the Nautilus 3 and the Nautilus Prime X. Some of these share coil heads and some do not. As a general rule, the older models built around the vertical-coil design share one family of heads, while the later mesh-coil tanks use their own, differently shaped heads. Do not assume that because a tank says Nautilus on the glass, any Nautilus coil will fit it.

Here is how to check before you buy.

• Read your current coil. The resistance, for example 1.8Ω or 0.7Ω, is usually stamped or printed on the coil base or on the original packaging, often alongside a wattage range.
• Match the model name. Find the model on the base of the tank or on the original box, and match it to the model named in the variant you pick on this page.
• Treat mesh tanks separately. If you own a mesh-coil tank, choose a variant labelled for that tank only. Older vertical-coil heads and mesh heads are not interchangeable.
• Ask if you are unsure. Send us a photo of your tank and the old coil before you order and we will point you to the right option.

Fitting a coil from the wrong family can cause a loose seal, leaking from the base, a poor electrical connection that makes your device flash an atomizer error or fire erratically, or simply a head that will not thread in. Never force a coil into place. A correct head screws in smoothly with light finger pressure and stops cleanly when it seats.

Third-party coils sold as compatible with Nautilus tanks exist as well, and some of them work fine, but this page is for Aspire's own heads. Using the manufacturer's part removes one variable when you are troubleshooting, which matters if you have had leaking or dry-hit trouble in the past and want to know whether the coil or the tank is at fault.

Performance and Vapour Delivery

Performance with a coil head depends mainly on its resistance, so it helps to think in two broad groups. Higher-resistance heads, around 1.5Ω to 1.8Ω, run at low power, typically somewhere around 10W to 18W. They produce a tighter, more restricted draw that suits vapers who like a cigarette-style mouth-to-lung inhale, and they sip e-liquid slowly. Lower-resistance heads, roughly 0.7Ω and below, run at higher power, often around 15W to 25W or more depending on the tank. They give a looser draw, noticeably more vapour and a warmer inhale, and they use e-liquid faster. Whichever variant you choose, treat the wattage range printed on the coil as the limit, not a suggestion.

Nautilus coils are known for quick ramp-up. The cotton and wire mass is small, so vapour starts almost as soon as you press the button, usually within about a second at a sensible wattage. Throat hit is moderate and follows your nicotine strength more than it follows the coil. Vapour temperature stays warm rather than hot when the coil is properly primed and run inside its range.

E-liquid consumption is the practical way to think about puffs for an accessory like this. Unlike a disposable, a coil head has no puff count of its own. Its lifespan is measured in how much liquid it can vaporise before the cotton darkens and the flavour fades. As a rough guide, a light user on a higher-resistance head might take two to three days to finish a 2ml tank, while a heavy user on a lower-resistance head may empty it in a day. Across the typical life of one head, that usually works out to somewhere between about 15ml and 50ml of e-liquid, depending on how sweet the liquid is and how hard you vape.

• Stay inside the wattage range printed on the coil base.
• Take puffs of two to four seconds rather than long drags, which heat the cotton unevenly.
• Pause for 20 to 30 seconds between puffs if you are chain vaping, so the wick can refill.
• Keep the tank above a quarter full. Vaping on an almost empty tank is the quickest way to scorch a fresh head.

Flavour Profile and Which E-Liquids Suit It

A coil head has no flavour of its own. What it does is decide how faithfully your e-liquid is reproduced. Aspire's vertical-coil heads are generally described as giving a clean, balanced flavour with a slightly muted top end at low wattage, which suits e-liquids that taste good without being pushed hard. With a fresh head, the first few days tend to give the fullest flavour, and then it gradually softens as residue builds up on the cotton and wire. That is normal and is the main sign it is time to change the coil.

Because the pack's five variants are split by coil type rather than by taste, the useful question is which e-liquid styles work well with them. Based on how these coils behave at their rated power, these are sensible starting points.

• Tobacco and tobacco blends: Higher-resistance heads reproduce the dry, toasted notes well at 12W to 16W.
• Menthol and mint: Cooling flavours stay crisp on both resistance groups. Mint liquids can leave stronger residue, so expect to change the head slightly sooner.
• Fruit flavours: Strawberry, blue raspberry, apple and mixed berry sit comfortably in the middle of the power range.
• Ice and cooling blends: Fruit with a cooling finish works well on lower-resistance heads where the extra warmth lifts the sweetness.
• Dessert and custard styles: Vanilla custard, biscuit and bakery liquids are heavy on sweeteners. They are rich, but they gunk up the cotton faster than other styles.
• Cola and soda flavours: These carry a lot of flavouring and can darken the wick quickly, so keep the power at the lower end of the range.

If you switch flavours often, change to a new head when you move between very different profiles, for example from a heavy dessert liquid to a delicate tobacco. A used coil holds on to the previous liquid in its cotton, so you will taste ghosting for several tanks. Pairing the coil with sensible airflow also helps. Opening the adjustable airflow ring a little more cools the vapour and lightens the flavour; closing it concentrates the taste and warms the draw. Try a few settings on your first tank and settle on what suits your liquid.

Coil Technology: Vertical Coil Construction, Cotton and Resistance

The older Nautilus coil heads use what Aspire calls a bottom vertical coil design. The heating wire is wound into a coil and stands upright in the middle of the head, with cotton wicking passing through and around it. Liquid enters the base through openings at the bottom, travels along the wick and reaches the coil, and the air from the adjustable airflow ring passes over it on its way to the drip tip. The practical benefit of the layout is that the wick sits low in the tank, so the head keeps drawing liquid until the tank is close to empty. The usual material is Kanthal-type resistance wire with cotton as the wick, though you should always confirm on the pack for the variant you choose, because newer Nautilus models use different heating elements.

Mesh-based Nautilus heads are a separate group. These replace the wound wire with a flat stainless steel mesh that wraps the wick, which spreads heat across a larger surface and usually supports lower resistance and higher power. If your tank is a mesh model, you need the matching variant. A vertical-coil head and a mesh head are not a like-for-like swap.

Resistance matters because it sets how much power the head converts to heat for a given voltage. The relationship is power equals voltage squared divided by resistance. On an unregulated device with a fully charged 4.2V battery, a 1.8Ω head draws about 9.8W and a 0.7Ω head about 25W. At 3.7V, which is a typical mid-charge level, the same heads draw roughly 7.6W and 19.6W. On a variable wattage device you simply set the output inside the printed range and the chip handles the voltage. This is why the same coil can feel different on different batteries and why a flat battery feels weaker.

• Higher resistance (about 1.5Ω to 1.8Ω): lower power, tighter draw, lighter battery drain.
• Lower resistance (about 0.7Ω and below): higher power, airier draw, more vapour, faster battery drain.
• Cotton wick: absorbs liquid well, needs priming before first use, and chars if run dry.
• Coil life: sweeteners and over-powering are the main causes of early failure, not simply the passing of time.

Design and Build Quality

A coil head looks simple, but a few details in its construction decide whether it seals properly and performs reliably. Each Aspire Nautilus head has a metal shell with a threaded base that screws into the tank, a central positive pin separated from the shell by an insulator, and a silicone sealing ring around the outside that keeps liquid from running past the thread. Slots or openings near the base let liquid into the wick. Inside the head, the cotton is visible through the openings and the heating element is hidden behind the shell.

Aspire's coil heads are manufactured in volume and are consistent from pack to pack in the main dimensions, which is the main reason they seat cleanly in a matching tank. As with any consumable made in bulk, you may occasionally find a head with a slightly loose wick or a stray fibre. That is easy to spot before you fit it, so it is worth a quick look at each coil.

Before fitting a head, run through this short inspection.

• Check that the silicone ring is present, sitting flat and not cracked or twisted.
• Look at the positive pin at the base. It should be centred and clean, with no bent metal or residue.
• Check that the cotton is neatly tucked, with nothing trailing out of the base or the sides that could be pinched by the tank.
• Confirm the resistance marking on the coil base matches the variant you ordered.

Handle the head by its metal shell, not by the cotton, and avoid touching the pin. Skin oil on the cotton can add an off taste on the first few puffs. If any coil looks damaged or does not match your order, do not fit it. Keep the packaging and contact us so we can look into it.

Because the head sits inside the tank, the glass and the base are what you see day to day. The coil's job is to disappear. A good sign is that you never think about it: no leaking, no gurgling, no taste of burnt cotton, and then a slow fade at the end of its life when it's time to change.

Power Settings, Battery Pairing and Charging

The coil heads have no battery of their own, so charging is about the device you pair them with. Matching the coil to the battery is the part that makes a difference. A higher-resistance head works well on compact pen-style batteries and entry-level mods, because the low wattage means little strain on the cell. A lower-resistance head asks more of a battery and suits a variable wattage device that can hold a steady output and has a battery of at least 1,500mAh.

It helps to estimate how long a battery will last. A single 2,000mAh cell at a nominal 3.7V stores about 7.4Wh. At 15W, a three-second puff uses about 45 joules, which is roughly 0.0125Wh. Dividing the battery's energy by that figure gives around 590 puffs in theory, and after allowing for losses in the electronics, something like 400 to 550 puffs in practice. At 25W the same battery would deliver closer to 250 to 330 puffs. These are estimates, not promises, but they explain why a low-resistance coil at higher power empties a battery much faster than a high-resistance coil at 12W.

• Charge with the cable supplied with your device, or a reputable charger of the correct rating. Cheap unbranded chargers are a common cause of battery faults.
• Do not leave a device charging unattended or overnight on a soft surface such as a bed or sofa.
• Replace damaged batteries. A wrapped cell with torn insulation, swelling or heat during use should be retired.
• Keep spare coils and loose batteries apart. Do not carry loose cells in a pocket with keys or coins.
• Check connection tightness. A loose tank on the battery thread causes weak firing and can look like a faulty coil.

If you use an internal-battery device, use its own charging port and let it cool before recharging after heavy use. If it fires with an atomizer or short-circuit warning on a new head, unscrew the tank, check the pin and the thread for residue and screw it back on before assuming the coil is faulty.

Nicotine Strength Guidance for Nautilus Coils

The coil does not decide nicotine strength, but the coil you choose affects which strength is comfortable. In the UK the maximum strength for e-liquid is 20mg per ml, refillable bottles are limited to 10ml and tanks to 2ml. That 20mg cap is the ceiling, not a target. Most people who are moving away from smoking find they settle at a lower strength once the cravings ease.

As a starting guide, these combinations suit the two main groups of Nautilus coil heads. Your own preference may differ, and if you are unsure, begin lower and work up.

• Higher-resistance heads (about 10W to 18W, tight draw): 12mg to 20mg nicotine salt, or around 12mg to 18mg freebase, often in a 50/50 or 60/40 VG/PG mix. The restricted draw delivers modest vapour per puff, so a higher strength keeps the hit satisfying.
• Lower-resistance heads (about 15W to 25W, airy draw): 3mg to 10mg freebase, or 5mg to 10mg nicotine salt. Large clouds deliver far more nicotine per puff, and a high strength at these settings becomes harsh quickly.
• Heavier smokers: may begin at the upper end for their group and step down gradually over a few weeks.
• Occasional vapers: usually do better with the lower end of each range.

Liquid thickness matters too. The wicking channel in a Nautilus head is sized for typical e-liquids. Very thick mixes, for example 80 per cent VG and above, can wick slowly through the smaller openings of a higher-resistance head and cause dry hits. A 50/50 to 60/40 VG/PG balance is the usual comfortable range here, with slightly thicker mixes acceptable on lower-resistance heads.

Nicotine is addictive. This guidance is about comfort and matching a strength to the equipment, not health advice. If you want help stopping smoking altogether, your local pharmacist or the NHS stop smoking service can provide support, and if you do not smoke you should not start vaping. Keep e-liquid out of reach of children and pets.

Who These Coils Are For, and Who Should Skip Them

These replacement heads are aimed at a specific group of vapers, and it is worth being clear about who benefits and who would be better looking elsewhere.

Good fit:

• Existing Nautilus owners who want to stock up so they never run out mid-week.
• Adult smokers moving to vaping who prefer a simple refillable tank and a low-power, mouth-to-lung style draw.
• Vapers with a compact, low-wattage battery who need a coil that works well at 10W to 20W.
• People who change coils regularly for flavour and want a per-coil cost that falls with a multipack.
• Anyone who prefers a manufacturer's coil to a third-party alternative while sorting out leaking or dry-hit problems.

Probably not for you:

• Anyone who does not own a compatible Nautilus tank. These do not work with other tanks, pod kits or disposables.
• People who want very high power, big clouds on a regulated mod at 50W or more. A dedicated sub-ohm tank and coil system is designed for that, and these heads are not.
• Vapers who prefer to build their own coils. These are pre-made heads, not rebuildable deck components.
• Anyone who wants a refill-and-forget system with no maintenance at all. Coil changes, priming and tank cleaning are part of owning a refillable tank.
• Non-smokers and anyone under 18. Vaping products are for adult smokers and existing vapers only.

If you are undecided between a refillable tank like the Nautilus and a pod system, think about how much routine you are willing to accept. A tank with replaceable coils is more flexible and generally cheaper per millilitre over time. A pod system is more convenient and tends to be less forgiving about the e-liquid you put in it. Neither is better in all cases; they simply suit different habits.

How to Fit, Prime and Break In a New Coil

Getting the first few minutes right is the single biggest factor in how long a coil lasts. Skipping priming is the most common reason a brand-new head tastes burnt on its first puff. Follow these steps whenever you change a head.

• Step 1, empty and unscrew. Remove the tank from the battery, take off the drip tip and empty any remaining e-liquid. Unscrew the base and slide out the old head, tilting the tank so that the last drops do not run down the chimney.
• Step 2, inspect the new head. Check the silicone ring, pin and cotton as described earlier, and confirm the resistance matches your order.
• Step 3, prime the cotton. Put two or three drops of your e-liquid straight onto the cotton through the openings at the base, or into the central bore if your model has one. The cotton should look damp, not flooded.
• Step 4, fit the head. Screw the head into the base until snug. Light finger pressure is enough. Overtightening can crush the seal or strip the thread.
• Step 5, fill the tank. Refit the tank and fill through the filling port, with the tank upright, keeping liquid away from the central chimney. Do not exceed the fill line.
• Step 6, wait. Leave the tank upright for five to ten minutes so that the cotton is fully saturated. This step is not optional for a dry-hit-free first puff.
• Step 7, set airflow and power. Open the airflow ring slightly, set your device to the low end of the printed wattage range and take a couple of short puffs without inhaling deeply to confirm the wick is feeding.
• Step 8, raise power gradually. After a few puffs, increase wattage in small steps to your preferred setting, staying inside the range.

A fresh head may taste slightly flat or papery for the first two or three tanks as the cotton settles. If that continues beyond a full tank, the head probably is not saturated, so give it a rest and try again.

Keep the tank clean while you are changing heads. Rinse the glass, drip tip and base in warm water, dry them fully and reassemble. Residue left in the base is a common cause of bad taste from a perfectly good new coil. Store spare heads in their original packaging somewhere cool, dry and out of direct sunlight, so the cotton stays clean until you need it.

Troubleshooting Leaks, Gurgling, Dry Hits and Burnt Taste

Most coil trouble comes down to a handful of causes, and the fix is usually quick. Work through the list below before deciding a head is faulty.

• Burnt taste on the first puff. The head was not primed, or you did not wait long enough after filling. Remove the tank, re-wet the cotton, and let the filled tank rest. Burnt cotton does not recover, so if the taste persists after a full tank, change the head.
• Dry hits mid-tank. You are probably running above the printed wattage, taking very long drags, chain vaping, or using a very thick liquid. Lower the power, shorten puffs and move to a 50/50 or 60/40 mix.
• Leaking from the base. Check that the head is fully seated and the silicone ring is intact. Over-filling, tipping the tank while filling and rapid temperature changes can also push liquid out. Wipe the base, refit and fill to the line only.
• Gurgling or spitting. Condensation in the chimney. Wipe the drip tip and chimney with tissue, open the airflow slightly and keep the device upright between puffs.
• Weak flavour with a new coil. Often caused by an overly sweet liquid, too much airflow or a power setting that is too low. Try closing the airflow a little and moving up one or two watts.
• Device shows atomizer or short-circuit error. Unscrew the tank and look at the pin and the battery thread for liquid or residue. Dry them and refit. If the error remains on a new head, test with another head from the pack.
• Flavour fades after a week or two. This is normal wear. Sweeteners caramelise on the coil and the cotton darkens. If cleaning the tank does not bring the taste back, replace the head.
• Gurgling after the tank drops below a quarter. Top up before the level gets low, because air in the wicking channel can interrupt flow.

If you have changed the head, cleaned the tank, checked the seal, lowered the power and still see the same problem on two different coils from the pack, the issue is more likely to be the tank or its O-rings than the coils. Replacement seal rings and glass sections are inexpensive for most Nautilus models. If a coil from this pack arrives faulty, keep the packaging and contact us.

Value for Money and How It Compares With Other Options

A five-pack is the sensible way to buy Nautilus coils if you use the tank daily. Multipacks nearly always cost less per head than single coils or three-packs, and five heads at a typical life of one to three weeks each will cover somewhere in the region of one to three months of vaping, depending on how much and how sweet. Over a year, that spend is usually well below what a regular smoker pays for tobacco, though the saving depends on your own habits and what you spend on e-liquid. Check the price on the page against the number of coils, and compare per-coil cost rather than headline price.

Here is how the Aspire heads compare with other routes, as fairly as we can put it.

• Third-party compatible Nautilus coils: Usually cheaper per head. Quality varies by maker, and a poor batch can mean inconsistent resistance, weaker wicking or a loose seal. If you buy them, choose a reputable brand and stay with the same make once you find one that works.
• Mesh-coil systems from other brands such as SMOK, Vaporesso or Voopoo: Mesh heads often deliver denser flavour and more vapour, and they are the better choice if you want a high-power setup. They also need more battery and more e-liquid, and many suit sub-ohm vaping rather than a tight, low-power draw. The Nautilus is stronger on simplicity and low-wattage efficiency.
• Refillable pod kits such as Uwell Caliburn or Vaporesso XROS: Easier to use, pocket-sized and generally leak-resistant. The trade-off is that the pod usually forms part of the replaceable unit, so you replace more plastic, and coil choice is narrower.
• Disposables: The cheapest to start and the most wasteful. A disposable is a single use item with a battery inside, and in the UK is capped at 2ml of liquid and 20mg nicotine strength. Spent disposables and old batteries should go to a recycling drop-off point, not the household bin. A Nautilus tank with replaceable heads produces much less waste over its life.

Used coil heads contain no battery, but they are small metal parts with residue on them, so they should not be flushed or left where children or pets can reach them. Check your local council's guidance on small metal and electrical waste, and take batteries, devices and anything electrical to a household recycling centre or a retailer take-back point.

Overall, these heads are fair value if you already own the matching tank and want a dependable, manufacturer-made replacement. They are not the right purchase if you are still choosing a first device, in which case a complete kit makes more sense.