A Beginner's Guide To Vape Coils?
Nick Nortcliffe
Updated: 22 October 2026
A vape coil is the heating element inside an vape device. Knowing which coil fits your device is essential because similar-looking coils can have different connections, resistances and power requirements.
For related equipment:
Innokin Coil compatibility guide
What Is a Vape Coil and How Does It Work?
A coil is the electrical heating element located inside a vape tank, pod or atomiser. When a device activates, a current heats the metal. A wick, commonly made from cotton, brings e-liquid into contact with the heated element. This produces a vapour that you can inhale. All replaceable coils contain a heating element, absorbent wick and coil housing. If the wick cannot supply liquid quickly enough, the coil will burn out.
Mesh Coils vs Regular Wire Coils
Regular wire coils use resistance wire shaped into a spiral or similar form. Performance depends on material, design and wicking.
Mesh coils use patterned metal, creating a larger heating surface for more concentrated flavour.
Rebuildable coils are fitted to specialist atomisers (RBAs, RDAs and RTAs). Users assemble their own heating element and wick. This requires electrical and battery knowledge and practice but the results are often just as good if not superior than pre-made coils.
Coil wire materials compared
|
Material |
Typical use |
Important limitation |
|
Kanthal |
Common power or wattage mode coils |
Generally not appropriate for temperature-control mode |
|
Stainless steel, such as SS316L |
Compatible wattage-mode coils and certain temperature-control setups |
Temperature control requires a suitable chipset and correctly identified wire |
|
Nickel (Ni200) |
Specialist temperature-control coils |
Not suitable for ordinary wattage mode; use only as specified |
|
Titanium |
Selected specialist temperature-control builds |
Requires correct settings and experienced handling |
A coil's resistance alone does not identify its metal. Never guess the wire material or enable temperature control without knowing the material of your coil.
Integrated Pods vs Separate Replacement Coils
Some devices accept separate press-fit or screw-in coils. You remove the old coil when it is time, and install a suitable replacement.
Other devices use integrated-coil refillable pods, replaced in full when worn. Vaporesso XROS cartridges are an example. Replacement pods must be separately available for reusable devices.
Coil Resistance Chart: Ohms, Wattage and Liquid
Resistance is measured in ohms (Ω). Lower resistance often accompanies higher-output equipment, but it does not determine wattage by itself. An electronically regulated device controls the power supplied, and two 0.6Ω coils from different ranges can have different operating limits.
|
Resistance example |
Common draw style |
Typical liquid context |
Manufacturer-rated wattage example |
|
1.0Ω Voopoo PnP X |
MTL |
Often a compatible 50VG/50PG liquid |
10–15W |
|
0.8Ω pod coil |
Often MTL |
Often 50VG/50PG, if supported |
Varies by cartridge; read its marking |
|
0.6Ω SMOK LP2 DC |
MTL |
Compatible relatively thin liquid |
15–25W |
|
0.3Ω Voopoo PnP X |
RDTL or DTL, setup-dependent |
Liquid specified for the fitted pod |
32–40W |
|
0.2Ω Aspire Cleito |
DTL |
Often compatible higher-VG liquid |
55–70W |
MTL = mouth-to-lung
RDTL= restricted direct-to-lung and
DTL= direct-to-lung.
A 50VG/50PG liquid is often used with lower powered pods; thicker 70VG/30PG formulations are common for high powered sub-ohm tanks.
0.6Ω vs 0.8Ω: What Changes?
A 0.6Ω coil is designed to run at a higher power than a 0.8Ω version in the same product family, but that is not guaranteed across brands. The airflow, liquid viscosity and rated wattage affect vapour output and consumption. Do not switch resistances without checking that your device supports the new cartridge or coil.
Coil Compatibility Finder by Brand
|
Brand |
Examples of distinct replacement families |
How to check |
|
Innokin |
T18E/T22 Pro, Prism S, Z/Zenith and integrated VCAP pods |
Use the Innokin compatibility guide; an Endura V needs VCAP pods, not T18E coils |
|
Vaporesso |
GTX, GTi and GT Core coils; XROS integrated-coil pods |
Compare the exact tank or pod designation in the coil collection |
|
SMOK |
LP2, LP1, RPM, RPM 2 and RPM 3 |
Confirm your device's cartridge system; SMOK LP2 coils do not fit every SMOK device |
|
Voopoo |
Legacy PnP, PnP X, ITO and TPP |
Check the pod generation: PnP X coils are not interchangeable with old PnP coils |
|
Uwell |
Caliburn G separate coils, later GPP integrated pods and Valyrian tank coils |
Verify the model and generation in the Uwell range |
Examples of Replacement Coils
Aspire Cleito Coils, Pack of 5
The range includes 0.2Ω and 0.4Ω options. The wattage guidance states 55–70W for 0.2Ω and 40–60W for 0.4Ω. Supported tanks include Aspire Cleito, Cleito EXO, Cleito Pro and K4.
SMOK LP2 Replacement Coils, Pack of 5
The range includes a 0.23Ω mesh DTL version, a 0.4Ω mesh version and a 0.6Ω DC MTL version. The wattage varies by option. Compatible devices include selected G-Priv and Morph models.
This large range includes 0.15Ω, 0.2Ω, 0.3Ω, 0.45Ω, 0.6Ω and 1.0Ω options for compatible PnP X pods, with many different rated power ranges. Compatible examples include Drag X2, Drag S2 and selected newer Drag or Argus models. They do not fit older PnP pods.
How to Change and Prime a Vape Coil
-
Turn off or lock the vape. Disconnect a tank from a mod if the instructions require it. Allow a hot coil to cool.
-
Remove the tank or pod. If necessary, empty the remaining liquid. Do not attempt to return used liquid to a clean bottle.
-
Take out the old coil. Unscrew or pull it out according to the manual. Do not attempt to open a fixed-coil pod.
-
Fit the correct replacement. Push in a press-fit coil evenly or screw a threaded coil in gently without overtightening.
-
Fill and prime. Fill up your tank or pod with e-liquid and leave it to stand for at least ten minutes before taking your first puff. This ensures that the coil is primed correctly and will not instantly burn out.
For an integrated-coil pod, replace the complete compatible cartridge instead of performing the separate-coil steps, the priming stage remains the same.
Troubleshooting Burnt or Weak Coils
|
Symptom |
Possible reason |
What to do |
|
Burnt taste on a new coil |
Incomplete priming, insufficient liquid or excessive power |
Stop firing; check settings and wick saturation. Replace a scorched coil |
|
Burnt taste after several days |
Residue build up or wick damage |
Replace the coil; check for overly sweet or incompatible liquid |
|
Weak vapour or muted flavour |
Low charge, worn coil or wrong settings |
Check battery, liquid and permitted wattage before replacing parts |
|
Gurgling or spitting |
Flooding or excess condensation |
Inspect seals and filling; clean accessible parts according to instructions |
|
Leaking around the coil |
Incorrect seating or worn seals |
Refit the correct coil and replace damaged components |
|
'No atomiser' or resistance error |
Poor contact, incorrect coil or electrical fault |
Stop use, inspect contacts and compatibility; never bypass protection circuits |
How Long Does a Coil Last, and What Does It Cost?
A coil can last days or weeks. The commonly quoted one-to-two-week interval is only an estimate. Liquid ingredients, sweetener residue, wattage and vape frequency all affect longevity. Replace a persistently burnt or damaged coil, even if it is relatively new.
For a simple monthly cost illustration, use the listed pack prices without treating them as guaranteed prices:
|
Five-pack |
Listed pack price |
Approximate cost per coil |
Two coils per 30 days |
Four coils per 30 days |
|
Aspire Cleito |
£9.99 |
£2.00 |
£4.00 |
£8.00 |
|
SMOK LP2 |
£11.50 |
£2.30 |
£4.60 |
£9.20 |
|
Voopoo PnP X |
£11.75 |
£2.35 |
£4.70 |
£9.40 |
Figures exclude delivery, e-liquid and device costs. Integrated-coil pods have different replacement costs.
UK Rules and Safe Use
The UK prohibited the sale and supply of single-use vapes in June 2025. A compliant reusable vape with a coil must allow that coil to be replaced directly or within a readily available replacement pod or cartridge. Nicotine-containing consumer liquids remain subject to the 20mg/ml concentration limit, alongside the 10ml refill bottle and 2ml tank limits. From 29 October 2026, expanded under-18 sales rules also cover vaping components including coils.
Frequently Asked Questions
Is a 0.6Ω coil better than a 0.8Ω coil?
Neither is considered ‘better’. If both are supported by the same device, the 0.6Ω option may be rated for more power and a slightly more open draw.
How do I know which coil fits my device?
Find the complete tank or pod model name, then identify its replacement family and supported coils. Innokin T18E and Z-Coils, for example, belong to different systems.
How long does a vape coil last?
Often about one or two weeks, but there is no fixed lifespan. Heavy use, unsuitable wattage or liquid residue can shorten life. Replace a coil with a persistent burnt taste or visible damage.
How do I prime a new coil?
Fit the correct coil, fill with compatible liquid and leave to stand for at least ten minutes. Do not fire a dry coil. Start at the low end of the recommended power settings before increasing.
What ohm coil is best for MTL vaping?
Many MTL setups use coils around 0.6Ω to above 1Ω, but there is no universal threshold. The SMOK LP2 0.6Ω and Voopoo PnP X 1.0Ω are examples with different wattage requirements.
Final Checklist
Identify your exact device, select the compatible coil family, check resistance and wattage, and match the liquid to the wick and heating arrangement. Prime new coils, replace damaged parts and calculate ongoing costs from the number of coils you actually use.
Sources and Further Reading
VapeGala, Innokin Coil Compatibility Guide