Question: how many kilowatts does underfloor heating use?
Answer: Perhaps you have to provide heat for an underfloor system in a screeded concrete floor which is covering an overall area of 52m2. So in this case you would use the 100w per m2 calcu lation: 52 (m2) x 100 (watts per m) = 5200. This is 5200w or 5.2kW.