If you’re vaping an ecigarette personal vaporizer, there’s a good chance you have a tank or clearomizer that contains an atomizer that is replaceable when it burns out.
Some atomizers, like the Triton Tank System from Halo Cigs have top coils. Others, like the Endeavor from Apollo or the PRO II from VaporFi have bottom coils. All atomizers are made to last for a few months depending on your vaping style. When you order new ones, you get to choose your ohm resistance level.
What is OHM Resistance?
All coils generate heat that is driven by the battery. The heat turns your e-liquid into a vapor, but some coils create more heat than others. Why? It’s because atomizer coils with Low Electrical Resistance (or Lower ohm numbers) create more heat and a warmer vapor. Those with High Resistance (or Higher ohm numbers) produce a cooler vapor.
How Does OHM Resistance Affect my Vape?
The ohm rating contributes to your throat hit as well as the amount of vapor your ecig produces. Keep in mind that those features are also determined by your battery’s input voltage as well as your e-liquid’s PG/VG e-liquid ratio.
A low ohm coil is between 1.5 – 1.8ohms; a standard ohm coil is generally between 2.4 – 2.8ohms; and high ohm is anything 3.0ohms or more. SubOhm resistance is also available for advanced vaporizers.
People who love an intense throat hit go for the lower ohm resistance, but experimentation is the key since your vape depends on other factors too.
Main Features of an Atomizer with Lower OHMS
- Your vapor with be hotter
- You’ll get more of a throat hit
- Your battery will lose it’s charge faster
- You’ll burn up your e-liquid faster
- You’ll get more unpleasant dry hits because you run down your e-liquid faster.
- Some flavors can taste better (or worse) depending on your e-juice
Main Features of an Atomizer with Higher OHMS
- Your vapor with be cooler
- You’ll get less of a throat hit
- Your battery will hold it’s charge longer
- Your e-liquid will last longer
- Some flavors can taste weaker, but smoother depending on your e-juice
A good rule of thumb is that if you’re vaping with a lower battery input voltage (between 3.0 – 3.5) you can safely choose a lower ohm resistance.
On a standard eGo battery, the battery input voltage is usually between 3.3 and 3.7 volts so choose your atomizer’s ohms between (the very lowest) 1.5 and 3.4 ohms (the very highest).
What About High Watt Low Ohm and Sub-Ohm Vaping?
For more advanced vapers, high wattage and low resistance means amazing flavor, and it can produce more vapor. Off the chart vaping takes some know-mhow, it's not for everyone, and under certain conditions, can be dangerous. That means it's imperative to use a safety regulated high watt PV. Keep in mind, higher battery voltage/wattage will also deplete the battery and e-juice faster.
Here’s a handy chart showing optimum ohm resistance for different battery voltage/watts.
For Sub-Ohm coils (under 1 ohm) using a high powered vaporizer, begin by setting your Wattage at about 12 and adjust up to about 20Watts. Best to start low then adjust up. Remember, you can cause dry hits and burn wicks by cranking your mod up too high for the coil to handle.
This chart was designed for single coil atomizers.
We did not create this chart, but found it to be a useful guide. All rights belong with its original owner.
What about Dual Coil Atomizers?
The recent popularity of Dual coil atomizers makes things a bit more complicated since 1.8 ohm is the total resistance of two higher ohm coils cut in half. I know it sounds a bit backwards, but that how ohms work. Because there are now two coils, the total 1.8 ohm resistance will vape like a 2.0 – 2.5 ohm single coil atomizer.
Also remember, ohms and your battery’s input voltage combine to determine your vape experience.
Here are some very basic guidelines based on my preferences.
Single coil Duel coil
eGo Batteries 2.0 – 2.5 ohms. 1.5 – 1.7 ohms
Variable Volt Batteries (3.7- 6 Volts) 1.7 – 3.2 ohms 1.5 – 2.5 ohms
If you are using duel coil atomizers, Variable Voltage Batteries are recommended by resellers. According to Apollo e-cigarettes who sells the more popular dual coil tanks from Kanger and Aspire, some eGo battery volts may be too low to power the coils.
Even with these basic guidelines, your e-liquid can also affect your vaping experience.
If you're using a higher wattage battery choose a lower ohm resistance. A high or Max VG e-liquid will perform better!
There is no one formula for everyone.
Feel free to comment if you have any questions or if you would like to share your experience in selecting the best ohm resistance for your vaporizer.
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