American Pro Tropical Air Cooled Screw Chiller is a kind of central air-conditioning unit which adopts air as the cooling or (Heating) source and water as the cooling or (heating) medium to cool down or (heat ) the indoor ambient temperature through the indoor terminal(AHUFCU). American Pro air cooled screw chillers are the premium solution for industrial and commercial locations where installation contractors, consultants and building owners require optimal performances and optimized air quality. Air cooled chillers typically have a lower initial investment and maintenance cost than water cooled system because they do not require a cooling tower, condenser water pump, and associated condenser water chemical treatment system.- R134a environmental friendly refrigerant Refrigerant of the HFC R134a group with zero ozone depletion potential. Very low GWP (Global Warming Potential)