To meet the needs of the smart home, Hitachi Cooling & Heating offers the FrostWash range of air conditioners. The protagonist of the range is the FrostWash technology: fruit of the research and development of the Hitachi Japanese laboratories, it is not a simple air filtration and purification system, but an innovative technology that captures, freezes and washes away dust, mold and impurities. The ice crystals and water droplets generated by this process allow for a thorough cleaning of the exchanger fins, neutralizing 91% of bacteria and 87% of molds that are deposited inside the air conditioner. Activated automatically and by remote control, FrostWash, in addition to introducing cleaner air into the environment, also makes the air conditioner more efficient, since the dirt on the filters or other elements of the unit can increase the energy consumption by more than 10%. Besides, the new airCloud Home app guarantees the connection with all mobile devices and the intelligent management of the air conditioner through voice control (Alexa and Google Home). In addition, the innovative Smart Geo Fence geolocation function, an Hitachi exclusive, detects the presence of the user within a radius of 500 meters (incoming) and 10 km (outgoing), automatically adjusting the switching on, switching off and the temperature of the air conditioning according to habits and lifestyle, for high comfort and maximum energy savings. Among the models in the FrostWash residential range, Dodai is the most compact: with a width of only 780 mm it can be installed anywhere, even above a door. It is in A++ class and is equipped with advanced technologies: Powerful mode (it brings the air conditioner to the maximum power in a few minutes, ensuring immediate freshness), Eco function (it guarantees energy saving and the simultaneous use of other appliances) and Holiday mode (it allows to set the heating operation to a minimum temperature, so as not to find the home too cold after returning from a holiday or a business trip). Finally, with 20 dB emitted, Dodai FrostWash is among the quietest air conditioners in its category.