Yes, although it depends on what you mean by this! Your split system can cool – or heat – multiple rooms at a time, although it works best in a defined space. For example, if you want to cool an open plan loungeroom and dining room, if you have a door leading to a hallway, close it so you can properly capture the cool air. Or, you could pair the air con with a fan which can help push the cooler air around. Meanwhile, you can install multiple split system units in a home which run off the same outdoor unit. This way your cooling is connected throughout the same generator but can cool or heat rooms individually.