My wife has had the dryer for 4months now.It started not heating up as much in the last couple weeks, now it just blows cold air.Went to look for the warranty caus' one of the reasons I bought this $200 dryer was the fact it had a 5yr warranty...NOT!!!!.....I started looking for the serial number only to find it had been removed from the box(you can clearly see the location where it used to be and was torn off!)I came back here to check it out and found all these posts on "non-authorized" reseller bull$!!it.I do alot of research when I buy stuff, making sure I pay enough money to get quality and not buying cheap.There is no way to know Amazon is not an authorized reseller.This has been a complete rip off.Make sure you heed the warning....BUY ELSWHERE.Make sure it has the serial number on the box!I'm really pissed about this.Now we have to spend more money on another blow dryer.This sucks!!