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ClimateMaster’s Tranquility Vertical Stack TSM Series heat pump units are available in 3/4- through 3-ton capacities. The units provide energy-efficient heating and cooling as part of either a boiler/cooling tower or geothermal heating and cooling systems. Units include a multiple-speed, permanently lubricated PSC direct-drive blower motor, full-port shutoff valves with memory stop, stainless-steel braided hose kits and an optional pre-programmed, variable-speed high-efficiency ECM motor for optimum CFM. Field-selectable supply air openings allow for maximum installation flexibility.