Air-cooled chiller with a cooling capacity of 750 kW. The chiller is equipped with two stepless monoscrew compressors and has a range from 13 to 100%, with an ESEER value of 4.01. The machine is energy-efficient, low-noise and plug and play. The chiller is fitted in a solid frame with condenser protection in the form of an impact-resistant grid, and can be easily moved by forklift truck or crane.