ClimateMaster Tranquility® Split Systems provide heating and cooling for both new construction and retrofit applications in which installation space is at a minimum. Tranquility® Digital Split Systems incorporate the latest geothermal technology, including iGate® and vFlow® to provide the highest efficiency and lowest operating cost of the ClimateMaster geothermal split systems. When combined with ClimateMaster Tranquility® Cased Coils (TAC) and Digital Air Handlers (TAH), our split systems achieve maximum efficiencies. The Tranquility® Digital Split Series has been designated as one of the Most Efficient ENERGY STAR certified products in 2017 for exceeding stringent efficiency requirements.