I have been using the WarmlyYours In Floor Heating System in my house's kitchen and half bath for 7 years. My family absolutely loves it and I can confirm it is the most efficient in floor heating system I know of. It is unbelievable how fast it heats the tile up. The way the WarmlyYours engineers incorporated the Cerazorp insulation into the design to stop the heat going into the concrete slab below "a large heatsink" was genius. I do not see this design with other in floor heating systems which did not make sense to purchase. I am extremely thrilled I chose WarmlyYours. We are very pleased with the entire experience. World class support from start to finish. Highly - Recommended!