Quantech Air-Cooled Chillers offer up to 50% annual energy cost savings compared with the replaced chillers, have a low lifecycle cost, meet or exceed ASHRAE standards, and help earn LEED credit with a low refrigerant charge. The Quantech line includes the QuantechQTC2 and QTC3 15 to 175 ton air-cooled scroll chillers, as well as the Quantech QTC4 160 to 210 ton air-cooled screw chillers with variable speed drives, which are built to order. The QTC2 (15 to 50 tons) provides chilled water for all air conditioning applications using central station air handling or terminal units. The QTC3 (55-175 tons) offers full load and part load efficiencies that meet or exceed ASHRAE standards and operates at 125 F and down to 0 F. The QTC4 (160 to 210 tons) combines technologies in compressors, heat exchangers, condenser fans, and chiller controls to deliver unmatched efficiency. The variable speed drive screw compressors dramatically reduce sound levels.