This mixed-use tower in Calgary, AB consists of 16,500 ft² of commercial space on the main floor, with two residential suite towers (34 and 37 stories respectively) that will have 650 units. There is also three levels of below grade parking. Curtis Block was designed with a central boiler plant and air cooled chiller plant that serve 4-pipe fan coil units in residential spaces. There is one heating and one cooling plant per tower.