How long does UFH take to work?
Normally from cold start, a typical solid floor system will take 3 - 5 hours to reach floor temperature. It will then take substantially longer for the floor to then warm the room and all the internal contents. This can sometimes take up to a few days. However when the system is operational and the entire structure and contents are all to room temperature, it will only lose an average of 4°c in an 8 hour period therefore it will only take a couple of hours to reach operating temperature again in normal conditions there after.