I bought Samsung gas dryer (DV407AG) on Nov of 2009. After using for about months, the drying clothes needs 2-4 hours. I did all the troubleshooting according to the manual, and still need longer time (2-4 hours). I called the Samsung customer service for times. They came to my house to repair the dryer last year during my warranty time, but they still charged me $70. After then, it still needs longer dryer time. I called them again on Nov of last year (within my warranty time), they asked me to try to use manual dry function, but not suggest me to repair it. I tried them for 1-2 month, it does not work also. I found the temperature seems like not get hot after using several times (I use dryer one week for one time. I called them again and finally they told me they will send a technician to my house in a few days. However, I need to pay more money again to repair my dryer as it is not in my warranty time. Samsung company says to people that if they use their dryer it will save time and money, however for my experiences, it dose not save any money (within 14 months, I pay repairing fees for 2 times and need 2-4 hours to dry clothes for each time). Based on my experiences, I will never buy their products again and will share my experience with people.