In December 2013. I bought 2 of these parts. The first was after about 5 weeks on the mind. It quickly became warm, then stopped for about 5 minutes, the heat, cooled and heated no longer in coming. Was, however, also be exchanged without problems. The 2nd part was properly packed by me and eingelagfert over summer. As last winter I took it back into use, there was the same problem as in part one: heated, cooled, remained cold. As I told the seller the problem, I was drawn to the 6 months warranty ... Conclusion: Not good and cheap.
