Heated Furniture in Japan: The Kotatsu
Posted: Sunday, May 31, 2009
by Tom Aaron
Aaron Language Services
From what I saw of Japan when I first arrived, I knew the winter would be a challenge. The wind was blowing and snow was falling. I expected the cold outside, but not inside. Looking for central heating in residential housing, I discovered that central heating consisted of placing a kerosene heater in the center of the room. The kerosene heaters commonly in use emitted foul fumes, giving me dull headaches. Periodically opening the windows to the biting winter cleared the fumes, but the room temperature would drop. I was then cold and my head still hurt. Due to the wretched smell and the high price, I did not buy a kerosene heater for my first apartment. Apartments in Japan rarely came with heating, and my little apartment was no exception.
The light blue quilt had tiny red cars going down the road, but it did not match the reddish brown table. Still both were cheap. The quilt trapped the heat that the heat lamp radiated from under the table base. Not knowing better, I didn't have a pad underneath the kotatsu to both trap the heat in and protect the tatami, the woven straw mat flooring in some rooms and houses in Japan.
During my first winter in Japan, I remember sitting at my kotatsu on a cushion, resting my back against the wall and keeping warm with just the kotatsu and a small electric space heater in my little one room apartment while the snow fell and the wind blew. My legs were warm under the kotatsu. My upper body was warm where the space heater reached it.
When I was small, I used to build caves inside my room in the winter. I would throw a blanket over a couple of chairs and huddle inside, imagining myself a bear in winter in my centrally heated cave. To fight the biting cold that I was imagining, I would bring in a lamp for warmth. The cave was perfect until I burned myself on the lamp. I never burned myself under my kotatsu, but I did get uncomfortably warm. My new world in Japan was like my childhood, but without central heating.
The coal heated kotatsu dates back hundreds of years in Japan but today almost everybody uses electric kotatsu. The two types of kotatsu are the kotatsu I just described and the horigotatsu, which is a kotatsu that goes over a hole in the floor. You sit at the horigotatsu and stick your legs into the hole. I remember going to a soba restaurant in the countryside. The restaurant, with its high ceiling and beams, looked like it was built over a hundred years ago. Each large table had its own horigotatsu. Eating there in the summer, I could only imagine how cold the giant room was in the winter as people enjoyed warmth from the waist down.
Hundreds of year ago, when the kotatsu was first invented, everyone wore robes in Japan. The heat would enter at the bottom of the robe, go up the body, warming it, and leave the robe at the neck, heating the entire body. I wore Western clothes in the winter so my entire body did not get heated.
If you still don't have a clear image of what a kotatsu is, google and you can find pictures. Surf over to Ask Metafilter and you can even find instructions for how to build one. Kotatsu are marvelous, but winter in Japan is a cold and uncomfortable business. Due to the very high electric prices, insufficient insulation, and building codes and laws not requiring heating, people turn to devices like the kotatsu. My friend Reiko has a kotatsu, a heated blanket, and a heated pad that she places under her feet at her desk. These are just a few of the many devices in Japan that people use to fight the cold.
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