I purchased 2 Heatmiser Touch Carbon thermostats for my own UFH at home. After 2 weeks they both failed to work. I discovered very quickly that they were ramdomly changing the date settings which was throwing the programme settings out. I changed it back several times but the stats kept randomly changing dates. I spoke to Heatmiser technical dept who were no use and denied that there were any issues with the stats. I tried everything to solve it and reset them many times. 12 months later, the stats are still randomly changing dates every 2-3 weeks so the UFH may/may not work. As a heating engineer with 35 years experience, I've had enough of buying poor unfit products and of manufacturers that won't take responsibility for their dreadful products. Heatmiser have joined the list!!