Geek Vape Z Series Coil 5pcs/pack

Overview

The Geek Vape Z Series Coil 5pcs/pack by Geek Vape across 3 flavours at 0mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.

Geek Vape Z Series Coil 5 Pack Overview

The Geek Vape Z Series Coil is a replacement atomiser head sold here as a pack of five. It is made for Geek Vape tanks in the Z family. In any vape tank the coil is the part that does the real work. It holds cotton against a heating element, pulls e-liquid in by capillary action and turns that liquid into vapour when you inhale or press the fire button. Flavour, throat feel, how warm the vapour is, how often the tank leaks and how long a refill lasts all depend far more on the coil than on the glass or the metalwork around it. That is why keeping a spare pack in the drawer matters more than it first sounds.

This listing is a five-piece multipack, so you receive five separate coil heads in one order instead of paying a single-coil price each time one burns out. The Z Series range has four variants in this product family. In a range like this the variants usually differ in resistance and in the wattage window the coil is designed to work in, not in flavour, because a coil has no flavour of its own. Use the selector on the product page to see which options are in stock, and read the compatibility and wattage sections below before you choose.

The key facts at a glance:

• Pack size: 5 replacement coils per pack
• Type: sub-ohm replacement coil head for Geek Vape Z family tanks
• Construction: mesh-style heating element with cotton wicking
• Variants in this family: 4, differing mainly by resistance and recommended power range
• Typical life: roughly one to two weeks per coil for a moderate user, depending on liquid and wattage
• Best matched with: lower nicotine strengths in higher-VG e-liquid

It is worth being straightforward about what this product is. A coil is a consumable. It will not make a poor tank good, and it will not rescue a flat battery or the wrong e-liquid. What it does is restore the performance your tank had on day one. If your vapour has gone muted, your flavour has gone flat or you are tasting something scorched, a fresh coil is almost always the first and cheapest fix. Buying in fives also takes the guesswork out of when to change: swap early, before the taste turns, and you will get a more consistent experience from your device throughout the life of the tank.

The rest of this guide covers compatibility, construction, performance, flavour, build, power and battery considerations, nicotine strength, fitting, troubleshooting, who the coils suit and how they compare on value with the main alternatives available to UK vapers.

Which Geek Vape Tanks and Kits Use Z Series Coils

Coil compatibility is the single most common reason a replacement order goes wrong, so it is worth slowing down here. Geek Vape builds several coil families and each is designed around a specific tank base. The Z Series coils are intended for tanks in Geek Vape's Z family and for the kits that bundle those tanks. Geek Vape has listed Z coils against tanks such as the Z Nano 2 and the Z Sub-Ohm tank range, but model lists change over time, so always confirm against the manual, the box or the maker's own compatibility chart for your exact tank.

Do not assume that a coil which looks similar will fit. Geek Vape's B Series, G Series and other coil families, and the coils from other brands, are not interchangeable with Z heads even where the outer size looks close. A coil that does not seat correctly can leak around the base, give a loose or rattling feel, trigger a short circuit warning on the device or in the worst case sit badly enough to cause poor electrical contact.

A quick compatibility check before you buy:

• Read the old coil. The series letter and resistance are normally printed on the side of the head or on the base. If yours says Z, you are in the right range.
• Check the tank base. The model name or a coil family marking is often stamped on the bottom of the tank.
• Match the resistance deliberately. If you want the same experience as before, buy the same resistance. If you want something different, change one thing at a time.
• Look at the kit box or manual. The accessory list or spare parts page names the correct coil family.
• Ask before you guess. If you cannot find the information, send us the tank model and we will point you to the right pack.

It also helps to understand how the four variants in this family differ from one another. Typically a lower resistance coil asks for more power, produces more vapour and warmer output and uses more e-liquid, while a higher resistance coil in the sub-ohm class is gentler, uses less liquid and runs happily at lower wattage. Whichever you pick, use the wattage range printed on the coil as your guide rather than guessing from the device screen.

One UK-specific point: tanks sold for the UK market are limited to 2ml of capacity by regulation, and nicotine e-liquid bottles are limited to 10ml. That affects how often you refill, not which coil fits, but it does mean a UK-edition tank will need topping up more often than the capacity figures you may see in overseas marketing. If you vape a lot of e-liquid through a low-resistance coil, expect to refill several times a day and consider carrying a spare bottle.

Coil Construction and Mesh Heating Technology

Z Series coils are mesh-style sub-ohm heads. To see why that matters, it helps to compare mesh with the older round-wire design. A traditional coil is a length of resistance wire wound into a spiral around a cotton wick. It heats along a relatively small surface. A mesh coil replaces the wire spiral with a flat or rolled sheet of fine woven metal that sits against the cotton. Because the sheet has far more surface area touching the wick, it heats a larger amount of e-liquid at the same moment and does so more evenly.

In practice that gives three advantages that vapers notice straight away:

• Faster ramp-up. The mesh reaches working temperature quickly, so the vapour starts as you pull rather than a beat afterwards.
• Even vaporisation. Fewer hot spots means less chance of a scorched edge on the cotton and a smoother, more consistent flavour from first puff to last.
• Efficient liquid use. More of the e-liquid that reaches the mesh is turned into vapour rather than pooling or spitting.

Resistance is measured in ohms, and a sub-ohm coil is any head below one ohm. Lower resistance means the device pushes more current through the element for a given voltage, so the coil produces more heat and more vapour at the same setting. This follows basic electrics: power equals voltage squared divided by resistance. A regulated device does the sums for you and holds the wattage you set, which is why the printed wattage range on a coil is more useful than the resistance figure alone.

Most mesh coils in this class use a stainless-steel or Kanthal-type alloy, and the wicking is cotton, often an organic cotton blend. If you use a device with a temperature control mode, check the coil's material marking before you switch to temperature control, because only certain alloys are suitable. If the packaging does not say the coil supports temperature control, run it in standard wattage mode.

The coil head is also a sealed unit. The mesh, cotton and outer casing are assembled at the factory and are not designed to be rewrapped or reused. Do not try to clean and reuse a coil that has burnt, because charred cotton and carbonised e-liquid cannot be reliably removed and the performance will not return. Fit a fresh head instead. With five in the pack you will always have the next one ready.

Finally, remember that coil technology is only part of the picture. A good coil in a tank with poorly set airflow, or a heavy-sweetened liquid that gunks the mesh quickly, will still disappoint. The sections below cover how to get the best results from the construction rather than fighting it.

Performance, Vapour Delivery and Coil Life

Because a coil is not a self-contained device, there is no official puff count printed on the pack the way there is on a disposable. A more useful way to think about performance is in three parts: how the vapour feels, how quickly the coil responds and how long it lasts before it needs replacing.

Vapour feel. Z Series coils are sub-ohm, which means a direct-to-lung style of inhale. You draw the vapour straight into your lungs in one steady, relaxed pull, with the airflow ring set fairly open. The result is a large, warm cloud with a full body. If you are used to a tight mouth-to-lung draw from a pod kit or a former disposable, expect it to feel airier and more intense. Close the airflow slightly if it feels too loose, or lower the wattage a few steps.

Response. Thanks to the mesh surface, the coil reaches temperature quickly. There is little of the lag that older single-wire builds had. A good starting method is to set the wattage at the lower end of the printed range, take a few puffs and then raise it two or three watts at a time until the vapour feels warm rather than hot. Going to the top of the range is rarely necessary and shortens coil life.

Lifespan. This is where honest expectations matter. As a rough working estimate, a Z Series coil lasts around one to two weeks for a moderate user, which for many people equates to several thousand puffs. That is an estimate rather than a rated specification. Heavy daily use, high wattage and sweet liquids with a lot of sweetener or dessert flavouring will reduce it. Clean, fruit-forward or tobacco liquids at moderate wattage will extend it. A five-pack therefore supplies somewhere in the region of five to ten weeks of vaping for a typical user.

Signs a coil is approaching the end of its life:

• Flavour that is flatter or slightly burnt even with fresh liquid
• Vapour production that has noticeably dropped
• A crackling or hissing sound when the coil fires
• A darkened, sticky look to the cotton visible through the wicking holes
• A harsh catch on the throat that was not there before

Liquid consumption is also part of performance. Low-resistance coils use a fair amount of e-liquid, commonly a few millilitres a day for regular use. If you notice you are going through a 10ml bottle too quickly, drop the wattage, close the airflow a little or move up one resistance step if your pack offers it. Efficiency and enjoyment are usually found a few watts below the maximum.

Flavour Profile and Coil Break-In

A coil has no flavour of its own, but it shapes how flavour arrives. Mesh heads in this class are known for rendering e-liquids with clarity, because the even heat avoids the cooked, burnt-sugar notes a hot spot can add. On a fruit liquid you tend to get distinct top notes, on a menthol or ice blend you get a clean cooling effect without a harsh edge, and on a tobacco or custard liquid you get a rounded base note that doesn't turn bitter early. This is a general characteristic of the technology and it does depend on how you power and prime the coil.

Wattage has a clear influence on flavour:

• Lower in the range: cooler vapour, sharper flavour definition, better for delicate fruit and mint profiles, longer coil life
• Middle of the range: a balance of flavour and cloud, a good place to settle for most people
• Top of the range: warm to hot vapour, heavier cloud, richer dessert flavours but a risk of muting subtler notes and shortening life

Break-in, or conditioning, is the first stage in a new coil's life. A fresh coil can taste slightly of cotton or packaging for the first handful of puffs, and a new mesh can also give a mild metallic edge. This should fade within the first tank. To condition a coil properly, saturate it before use (see the fitting section), rest it for several minutes and then take your first puffs at low wattage without firing for long periods. Skipping the rest and taking long, hot pulls is how most people burn a new coil on day one.

Flavour fade is a normal part of the cycle. Over the lifespan of the coil the cotton gradually picks up residue from sweeteners and colouring in the liquid. If you swap between flavours often, the first few puffs after a swap can carry a ghost of the last liquid. Rinse the tank, wipe the base and expect a short lag. If you want to keep one liquid very pure, you can dedicate a coil to a single flavour family, for example one coil for fruit and ice and another for tobacco or dessert, and change tanks or coils accordingly. With a five-pack that is an affordable approach.

Finally, a note on e-liquids that work best. Higher-VG liquids at a 70 to 80 percent VG ratio tend to give thicker vapour and smooth throat feel but wick a little more slowly, so make sure the mesh is fully primed. Higher-PG liquids carry flavour sharply and wick fast but can feel thinner. A balanced 50/50 or 60/40 VG/PG blend is a safe starting point for most tanks in this range.

Build Quality, Fit and Design Details

The physical build of a coil head is mostly invisible once it is in the tank, but a few details separate a well-made one from a frustrating one. Take a look at them when you open the pack.

The seal and O-rings. Each Z coil has a seal at the base that stops e-liquid bypassing the wick and leaking into the airflow path or the battery connection. The rubber or silicone sealing ring should be intact, seated evenly and free from nicks. If any ring is cut or twisted, do not use that coil. Contact us and we will sort a replacement.

The contact pin. At the bottom of the coil is the electrical contact that touches the 510 connector pin in the tank base. It should be clean and bright. A bent or dirty contact can cause a misread resistance or a Check Atomizer message on the device.

The wicking holes. These small openings on the side of the coil let e-liquid reach the cotton. They should be clear and the cotton behind them should look white or off-white and slightly fluffy. If they are blocked, glued with residue or the cotton looks pressed flat, treat the coil as defective.

The casing and thread or push fit. Depending on the tank, a Z coil either screws into the base or presses into it. Look at the old coil you are removing and fit the new one in the same way. It should seat firmly with no wobble. Overtightening is a common mistake and can distort the seal, so snug is enough.

What to check before you fit it:

• Packaging is sealed and the coils are individually protected
• The series marking, resistance and wattage range are printed clearly on each head
• The seals are even and uncut
• The contact pin is clean
• The cotton is visible through the wicking holes and looks undamaged

Counterfeit coils exist across the whole vape market, particularly for popular brands, and they can have poor wicking, mislabelled resistance and unreliable materials. The simplest protection is to buy from an established UK retailer rather than from an unknown marketplace seller. Many Geek Vape retail packs carry a security code or QR label that can be checked against the maker's verification page, so look for that on your packaging and use it if present.

Store spare coils in a cool, dry place away from direct heat, in their original packaging, and keep them out of reach of children. A sealed pack stored properly will stay in good condition for a long time, although you should aim to use a pack within a year or two of purchase.

Power, Battery Drain and Charging Considerations

A coil does not have a battery, but it has a direct effect on how your battery performs, so it belongs in any honest discussion of the product. The lower the resistance, the more power the device needs to deliver to hit the wattage you have set, and the faster the battery drains.

As a rough guide, a regulated device running at 60 watts from a single 18650-style cell is drawing in the region of 16 to 17 amps from the battery once you account for the 3.7 volt nominal cell voltage, and more when efficiency losses are included. A two-cell device shares that load across both batteries in series and draws roughly half the current from each. This is why the battery matters so much with sub-ohm coils.

• Built-in battery devices: expect shorter battery life than with a higher resistance coil, often a day of moderate use or less, depending on capacity. Charge via the USB-C cable supplied with the device, and avoid leaving it charging unattended or overnight on soft surfaces.
• Removable battery mods: use only genuine, high-drain cells with a continuous discharge rating comfortably above the current your wattage requires. Never use rewrapped or damaged cells and never carry loose batteries in a pocket with keys or coins. Use a case.
• Charging habits: use the charger designed for the device, charge on a hard, non-flammable surface and unplug once complete.

It is also worth knowing that most modern regulated devices include protections against short circuits, low resistance and over-discharge, but those are a backstop and not a licence to ignore the rating of the battery. If your device shows a short circuit or Check Atomizer message after fitting a new coil, stop and read the troubleshooting section before pressing fire again.

To get more out of each charge, a few simple adjustments help. Lower the wattage a few steps from the maximum, keep the airflow slightly tighter, take shorter pulls and avoid chain vaping at the top of the range. You will usually lose very little vapour quality and gain a meaningful amount of battery life and coil life.

Recycling. Spent coils are small and made of mixed materials, so they should not go in with household recycling. The coil heads, any cut-open packaging and old batteries should be taken to an appropriate drop-off point. Many UK supermarkets, vape shops and local council recycling centres have collection points for small electrical items and batteries, and stores that sell vaping equipment are required to offer a take-back service for waste electricals. Never put lithium batteries in general waste or ordinary recycling bins, as they are a fire risk in refuse vehicles and processing plants.

Nicotine Strength and E-Liquid Choice for Z Series Coils

Choosing nicotine strength correctly makes the difference between a satisfying session and an unpleasant one, and it is especially important with sub-ohm coils because of how much vapour they deliver in a single draw.

In the UK, nicotine e-liquid is capped at 20mg per ml, and bottles are limited to 10ml. That cap is the same limit that applied to the pods and cartridges used in refillable pod kits and in the single-use vapes that were sold before the ban on disposables in Great Britain took effect on 1 June 2025. The legal ceiling, however, is not a recommendation. A strength that suits a small pod device can be far too strong for a sub-ohm tank.

A practical guide:

• 0mg to 3mg (freebase): suited to people who want mostly the vapour and flavour, ex-smokers who have stepped down already and heavier users running high wattage
• 3mg to 6mg (freebase, higher VG): the typical range for a sub-ohm direct-to-lung setup, with enough nicotine to satisfy light and moderate smokers without a harsh throat hit
• 10mg to 20mg nic salt: designed for low-power pod devices and tight mouth-to-lung draws. In a low-resistance Z coil at a high wattage these strengths will feel overwhelming, so a sub-ohm tank is generally the wrong tool for them

The reason is simple. A sub-ohm coil can deliver several times more vapour per puff than a small pod, so a given strength delivers far more nicotine per puff. If you move from a 20mg pod to a sub-ohm tank at the same strength, you may feel lightheaded, nauseous or throat-sore quickly. Step down significantly and adjust slowly. If you find you are chain vaping to satisfy a craving, move up one step in strength rather than increasing the wattage.

On the e-liquid itself, a 50/50 to 70/30 VG/PG blend tends to suit most tanks of this type. Very thick, high-VG liquids (over 80 percent VG) can wick slowly through the cotton and lead to dry hits if the coil is not fully primed or the wattage is too high. Avoid very thin, very high-PG liquids if your tank has wide airflow and you are prone to leaks. Liquids with heavy sweeteners will shorten coil life, which is worth knowing when you compare costs.

Vaping products are for adults and for smokers looking to switch. If you do not smoke, you do not need to start, and nicotine is addictive. You must be 18 or over to buy from us and we operate age checks on delivery.

How to Fit, Prime and Use a New Z Series Coil

Fitting a coil takes a couple of minutes and the way you do it decides whether the coil lasts a fortnight or burns out on day one. Follow these steps in order.

• 1. Empty and disassemble. Switch the device off or lock it, then remove the tank. Pour out any remaining e-liquid, unscrew the base from the tank body and lift out the glass if your tank design requires it.
• 2. Remove the old coil. Unscrew or pull it out gently, depending on the tank. Wipe any residue from the coil seat with a lint-free cloth or tissue. Check the O-rings on the tank for splits.
• 3. Inspect the new coil. Look at the seals, the contact pin and the wicking holes as described earlier. Confirm the series and resistance on the head.
• 4. Prime the cotton. Drip a few drops of e-liquid directly onto the exposed cotton through the wicking holes and into the centre of the coil. Do not drown the head, but make sure the cotton is visibly damp.
• 5. Seat the coil. Screw it in or press it in until it is snug and flat. Do not overtighten.
• 6. Reassemble and fill. Put the tank back together and fill with e-liquid, keeping the liquid below the maximum line and away from the central airflow tube. Close the fill port.
• 7. Wait. Leave the tank upright for at least five to ten minutes so the e-liquid soaks into the cotton through the wicking holes. This is the step that people skip and regret.
• 8. Start gently. Set the wattage at the low end of the printed range. Take a few short puffs without firing the device for more than a couple of seconds, wait a moment between each, then raise the power a step at a time to your preferred level.

Day-to-day use is straightforward. Keep the tank at least a third full so the wicking holes are always covered. Do not chain vape for long periods because the cotton needs time to re-wet between puffs. Hold the tank upright when not in use and, where the device has a lock, use it when you carry it in a bag or pocket to avoid accidental firing.

Maintenance is minimal. Rinse the tank with warm water and let it dry fully when you change flavour, and wipe the base and the connection pin periodically. Change the coil as soon as flavour degrades rather than pushing it to failure. Used coils and any old battery should be taken to a recycling drop-off point instead of general waste.

Finally, keep your e-liquid and spare coils away from children and pets. Nicotine e-liquid is hazardous if swallowed or if it contacts skin, so wash any spills off immediately and store bottles in a safe place.

Troubleshooting Common Coil Problems

Most coil problems come down to a short list of causes. Work through the symptom, check the likely cause and apply the simple fix before you assume a coil is faulty.

• Dry or burnt taste straight after fitting. The cotton was not fully primed or you did not wait long enough after filling. Remove the tank, drip e-liquid onto the cotton, refill and wait ten minutes. Start at a lower wattage. If the taste stays burnt, the coil may be damaged and should be replaced.
• Burnt taste mid-tank. The liquid level may be too low, the wattage too high, or the liquid too thick or too sweet. Refill, drop the wattage and consider a lower-sweetener liquid. If it persists, the coil is spent.
• Leaking from the base or airflow. Check that the coil is seated flat and that the O-rings are intact and not twisted. Do not overfill, do not tighten excessively and carry the tank upright. Pressure changes can also cause a leak, so avoid leaving a full tank in a hot car or on a flight.
• Gurgling or spitting. Excess condensation in the airflow path. Wipe the base, tilt the tank gently and blow through the drip tip, then lower the wattage a little.
• Weak vapour or flat flavour. The coil may be reaching the end of its life, the cotton may be gunked or the battery may be low. Try a fresh coil, a charged battery and a different e-liquid to isolate the cause.
• Check Atomizer or short circuit message. Unscrew the tank and re-seat it, clean the 510 connector and the coil contact pin with a dry cloth, and make sure the coil is tight. If the message persists, test with a second coil from the pack to rule out a faulty head.
• Hissing or crackling. Often a sign of excess liquid on the mesh or a coil that is starting to gunk. Reduce the wattage and see whether it clears. Persistent crackling means the coil should be changed.
• Flooded coil. Too much liquid reaching the mesh. Blow gently through the tank with the airflow open, wipe the drip tip and take a few short low-power puffs to clear it.

A final tip: if every new coil you fit burns within a day, the fault is usually not the coils. Look at your wattage, the sweetener load in your liquid, how long you leave between filling and vaping and how you take each puff. Change one thing at a time and you will find it quickly.

If you receive a coil that is clearly defective on arrival, for example with a cut seal or a damaged contact, keep the packaging and get in touch. Faulty goods are covered under your statutory rights, and we will arrange a replacement or refund.

Who Z Series Coils Suit and Who Should Look Elsewhere

These coils are a good fit for a specific kind of vaper. Being honest about that saves you money and frustration.

They suit you if:

• You already own a Geek Vape tank or kit in the Z family and need dependable replacements
• You prefer direct-to-lung vaping with a big, warm vapour and open airflow
• You use lower nicotine strengths, typically 0mg to 6mg, in higher-VG liquids
• You like a consistent flavour that stays steady through a tank
• You are happy to change a coil every week or two and want a multipack to keep costs down
• You are an adult smoker moving away from cigarettes and want a refillable system that gives you control over strength and flavour

You should look elsewhere if:

• You do not own a compatible Z family tank. These coils will not fit pods or tanks from other ranges.
• You vape 10mg to 20mg nic salt and want a tight, cigarette-like draw. A mouth-to-lung pod kit with a higher resistance coil will suit you better.
• You want a throw-away device that needs no maintenance. Refillable tanks need filling, priming and occasional cleaning. Note that single-use vapes can no longer be sold in Great Britain since 1 June 2025, so refillable and rechargeable kits are now the mainstream route.
• You are sensitive to heavy vapour production or you want a very discreet device. Sub-ohm clouds are not subtle.
• You do not smoke. Vaping is intended as an alternative for adult smokers, not as a habit to take up.

A word about first-time buyers. If you are new to vaping, a sub-ohm Z family kit can feel a lot for a first device. Many people begin with a simpler mouth-to-lung pod system and move to a sub-ohm tank later, once they know their preferred nicotine strength and draw. If you are moving between the two, remember to reduce nicotine strength when you step up to sub-ohm coils.

For experienced users the appeal is practical. If your Z family tank is working well for you, staying with the matching coils avoids compatibility problems and keeps your flavour consistent. Choosing the variant that matches your usual wattage and liquid takes the guesswork out of each reorder, and the five-piece pack means you can buy once and stay supplied for around two months.

Finally, because you use these coils with e-liquid, always check the local rules where you vape, including public transport and workplaces, and keep devices and bottles out of the reach of children. You must be 18 or over to purchase.

Value for Money and Comparison With Other Coil Ranges

Value with a consumable is about cost per week of good vaping, not the sticker price alone. A five-piece pack spreads the cost across five coils, so the per-coil price is lower than buying heads one at a time, and you avoid paying postage repeatedly. Check the current pack price on the listing and divide it by five. If a coil lasts a week to ten days, that gives you a simple weekly cost to set against the price of disposables or pod cartridges you may have used before.

Compared with the options you may have been using:

• Versus disposables. Disposables are no longer on sale in Great Britain, and even before the ban a refillable system with replaceable coils worked out noticeably cheaper per week for regular vapers, as well as producing less waste. The saving comes from buying e-liquid in bottles and coils in multipacks.
• Versus pod kits. Pod cartridges are convenient but typically cost more per millilitre of vapour delivered. Sub-ohm coils use more liquid, so your liquid bill will rise, but a five-pack of coils is often cheaper than the equivalent number of pre-filled or replaceable pods.

It is fair to compare the Z Series with the main alternatives from other brands. Be aware that these are different ecosystems and you cannot mix their coils with Geek Vape tanks.

• Voopoo PnP coils. A very widely available family with a large range of resistances and generally competitive pricing. PnP heads are easy to find in UK shops, which is a genuine advantage if you want an easy reorder. Z Series heads are made for a different set of tanks, so the choice is really a choice of device.
• Vaporesso GTX and GT coils. Also widely stocked, with a strong reputation for flavour in mesh form. Similar in concept and price band to Z Series.
• Uwell and Smok mesh coils. Well established, with long histories and many compatible tanks. Coil life and flavour are broadly comparable in each case, and personal preference plays a large part.

The honest conclusion is that mesh coils from the main brands perform within a similar band, and the differences are modest. The best reason to choose Z Series coils is that you already own a compatible Geek Vape tank and want matching heads that fit properly. The weakness is the one all proprietary coils share: you are tied to the maker's ecosystem and prices, so check availability before you commit to a device.

To keep your running costs down regardless of brand, buy multipacks, change coils on schedule instead of waiting for failure, avoid very sweet liquids if you want longer life, and keep your wattage in the lower half of the printed range. Delivery in the UK is available at checkout, and for any question on stock or variants you can contact us before ordering.