There are two kinds of kotatsu used in Japan today, differing in the configuration and the type of heating: Electric: The modern style of kotatsu, oki-gotatsu (置き炬燵), consists of a table with an electric heater attached to the underside of the table.
Der bruges to forskellige former for kotatsu i Japan i dag, der varierer i form og måde at varme dem op på: Elektrisk: Den moderne form for kotatsu (oki-gotatsu (置き炬燵, oki-gotatsu)) består af et bord med et elektrisk varmeapparat på undersiden.