The Japanese kotatsu method saves on heating. Heaters can be turned off.

Kotatsu is a traditional Japanese heating method that combines a low table with an electric heater and a thick blanket. This setup allows families to gather around it for warmth, promoting energy efficiency and reducing heating costs. It provides localized heating, maintaining a comfortable temperature while minimizing energy waste. The kotatsu also fosters family bonding as it serves as a central gathering place for meals and activities.