I took the 2000W release after having seen the good reviews on the moin powerful version. Many negative opinion which I do not understand I put it in an office which was quite wet and complicate a heat. Heat is nice sweet can be put together or be wall very easily. I fixed the wall and very happy, for those who talk programming problem, it may be necessary to open the manual ... it's really childish you just have to set your baseline temperature and it will be activated as and extent of decline and increase in temperature, for optimal regulation.