Quantech has expanded its QTC3 line of Air-Cooled Scroll Chillers up to 225 tons. The extended capacity of the QTC3 offers a more cost-competitive solution to 225-ton opportunities without sacrificing size, quality and efficiency. The QTC3 (55-225 tons) offers full-load and part-load efficiencies that meet or exceed ASHRAE standards. Made to order options now include variable speed drive (VSD) condenser fans to further enhance part load efficiency and sound as well as integral pump packages to offer a single purchase, shipment and install solution. The scroll compressors are proven reliable and the units are equipped with two independent circuits for partial redundancy.