Feelin' Hot Hot Hot

I have talked about the unique Korean heating system before - the ondol. To control the temperature, we adjust an electronic thermostat on the wall. The same thermostat also controls the hot water temperature. So, last night, Rie turned the temperature up for her shower, but we forgot to turn the temperature down again for the floor heating. We usually keep the floor at about 73 degrees. We learned last night that the ondol system maxes out at nearly 81 degrees. I woke up sweating. Also, we discovered that anything left on the floor will get very hot underneath. This includes pillows, jackets, blankets, and our futon bed. The floor underneath the futon was almost too hot to stand on.