Atomisers generally fade away rather than die, and for me most atomisers have gone past their best after 3 to 4 weeks, although they will continue to work for many weeks more. How long they last is down to several factors, how much and how often you vape and which eliquid you vape as well, clearer eliquids tend to allow the atomiser to keep going longer, dark eliquids tend to shorten the life as the non-volatiles in the darker liquid builds up on the coil diminishing its effectiveness.
I used to budget for a new atomiser every 3 weeks, now I use the eGo-C atomisers this works out cheaper in the long run
