I just received my Kanger Unitank which came with a 2.5, 2.2 and 1.8 ohm atomizer head. After 3 days of using the 2.5 ohm vapor was not being produced any more (I cleaned and dry burned the atomizer at least twice), so I changed the atomizer head and my ecig works again. My question is how long should an atomizer head last? I've read they last about 2-3 weeks but mine only lasted 3 days?
Yes, the juice can make or break a new coil. Also, the vape technique plays a role. If you vape all wrong like me, and use the wrong juice, i.e., dark, sweet juice, like me, then you can get on 1 - 3 days on a coil. I get one to two days on my cartomizers. I don't care, I like what I like, and replace them frequently, almost daily. I also learned to rebuild my own coils, which greatly reduced the coil cost to about a nickel, and then I don't worry about dry burning or cleaning. I can make a month of coils in a single sitting for about the cost of a retail coil. Also, I can select the best wire and wick material (like cotton), so the flavor wicks and tastes better. Remember, even if you do replace them daily, it's still less expensive than smoking. My carto's cost me about $5,00 per week. Coils were about a quarter per week (rebuilding). Good luck and welcome to the Forum.