This is the smallest of the multi split system produced by Panasonic. The system consists of the CU-2E15LBE outdoor condenser unit this is designed to partner two Etherea wall mounted units. There are various combinations of indoor units that can be fitted, select which models you require from the radio buttons. There are a number of advantages of using multi split systems compared to single splits. If outdoor space is at a premium this is the more compact solution. Even greater energy savings are achieved using the multi split compared to two single systems. On average this is outdoor condenser unit the CU-2E15LBE will save up to 10% compared to using individual systems.