We have this thing https://www.sanden-hot-water.com.au/specifications/ https://www.sanden-hot-water.com.au/specifications/ IIRC with a 300L tank. It was quite a

We have this thing https://www.sanden-hot-water.com.au/specifications/ https://www.sanden-hot-water.com.au/specifications/ IIRC with a 300L tank. It was quite a nice upgrade from our old 1960's era 2-phase instant hot water unit that was slowly failing - cold showers in winter are not fun. As user Danieru replied the heat pump is a a Japanese import (although the tank and rest of the system is locally made).