Thin House, Japan

The simplest kerosene burner has a tank for fuel, a mantle, and a control dial. Battery-operated electric ignition is a popular step up. The next rank has an electric fan to circulate hot air through the room. Many such units feature computer control of temperature. The computer can also turn them on and off on schedule. Gas heaters are also popular, and many homes have gas outlets in various rooms to accommodate portable units. Windows in many homes have vents to open to protect the occupants from excessive exhaust gas. Kerosene and gas units have safety features to turn off the fire and cut off the fuel supply when the heater receives a shake, whether from an accident or due to earthquake. These units also usually shut off automatically after two or three hours to prevent carbon monoxide fumes from building up while the resident is sleeping.
Another type of kerosene heater functions similar to a radiator, and consists of two parts. Kerosene fuel is stored in a tank and burned outside the home, and the flame is used to heat a fluid which is circulated into the second unit inside the house. In this unit, fans blow across the tubes carrying the heated fluid, and the room is warmed as a result. This type of heater is popular since it reduces the fumes significantly, and also virtually eliminates the chance of a small child or pet accidentally injuring themselves.
Electric heat is typically delivered through units mounted on the walls, such as above the doors to the deck or balcony, rather than through baseboards. These heaters often do double duty as air-conditioners. Thermostatic control and timers are available in most lines. The manufacturers of electric and electronic appliances produce these heaters.
In northern Japan, yukadanbō (床暖房) (literally, floor heater) is a type of radiating heater beneath the floor in some rooms of newer houses, where heated fluids are circulated to provide warmth. The cost is expensive, so sometimes this type of heater is only installed in small rooms like the "clothes changing room". Electric carpets have become popular in recent years.