Dual Coil – What is it in Vaping?
Definition
Dual Coil refers to a vape coil build that contains two separate heating wires working side-by-side inside the same atomiser. By splitting the electrical load across two strands, the setup doubles the vapour-producing surface area without requiring higher voltage, giving Aussie vapers noticeably thicker clouds and richer flavour from the same e-liquid. Found in everything from sub-ohm tanks to rebuildable drippers, a dual-coil configuration is the sweet spot between single-coil efficiency and more exotic multi-coil builds, making it a go-to choice for both beginners stepping up from a disposable vape and seasoned enthusiasts chasing dense DTL (Direct to Lung) hits.
Technical Details
Electrically, two identical coils are wired in parallel, halving the total resistance while doubling the surface area. For example, pairing two 0.4 Ω coils yields a 0.2 Ω reading on a Mod“>regulated mod. Most Australian vape shops stock pre-built dual-coil heads rated 0.1–0.5 Ω, optimised for 40–100 W. Inside the deck, each coil sits 2–3 mm apart to prevent hot spots and allow cotton to pass through both simultaneously. Variants include vertical dual coils (stacked one above the other) and mesh-strips treated as dual elements. Airflow is engineered with dual slots or cyclops ports to cool both coils evenly, reducing the chance of a Hit“>dry hit. Always confirm your 18650/21700 batteries have a continuous discharge rating (CDR) ≥ 25 A before firing low-resistance dual builds.
Usage & Tips
Install both coils tightly, pulse at 20 W to eliminate hotspots, then wick with enough cotton to snugly fill the Diameter“>inner diameter—too little causes leaking, too much strangles wicking. Start at the manufacturer’s lowest suggested wattage and increase in 5 W steps until flavour peaks. Because dual coils drink juice twice as fast, keep your bottle handy and top up the tank before it drops below the wick ports. If you notice weak flavour or a metallic after-taste, check for uneven glow: lightly pinch or strum the cooler coil with ceramic tweezers while firing. Finally, battery life halves compared with a single coil; carry spare cells or lower your nicotine strength so you vape less often.
History & Context
Dual coils debuted in 2010 when Australian modders drilled second coil posts into Boge cartomisers to mimic the cloud output of early Genesis atomisers. As high-drain batteries and sub-ohm chips arrived, manufacturers like Kangertech and Aspire mass-produced sealed dual-coil heads, turning cloud-chasing from a niche hobby into mainstream vaping culture Down Under.