The 1/2 HP Elemental H2O Chiller utilizes a microcomputer control system and environmentally friendly R134a refrigerant to maintain a stable, cool temperature in water tanks. The 120V, 420W energy-efficient H2O Chiller has a flow rate of 317-793 gph and features a temperature memory system, an anti-corrosive evaporator, auto-restart and an LED display. This unit has a capacity of 50-135 gallons and is recommended for use with water pumps that push 30-800 gph. The H2O Chiller is compatible with 3/4†or 1†ID tubing and carries a one-year warranty.