Zubadan is Mitsubishi Electric's only technology for heating at low temperatures of -25 ° C.
ZUBA short from of "zubbato" in Japanase and meaning exactly or promptly, and DAN meaning warm, with its expanded heating capabillities, ZUBADAN sets a new standard in performance.
The Mitsubishi Electric Zubadan units offer class leading heating performance down to extremely low outside air temperatures and are ideal for heating applications in colder climates. This low temperature performance is achieved by use of Mitsubishi Electric's flash injection refrigeration circuit that reintroduces refrigerant into the compressor refrigeration circuit for a second time.
Another key feature of this technology is that this allows the heating system to operate over extended heating periods. All air to air heat pumps require to go into defrost mode due to ice build-up on the outdoor unit, but the Zubadan technology means this time is greatly reduced meaning the heat pump can switch back into heating mode far more quickly than most heat pumps.