selection involves many of the same system inputs and requirements as air-cooled variants. Critical chiller specifications include a decision between portable, stationary, or reverse flow chiller styles, the required tonnage/cooling capacity, the necessary voltage for operating (under some circumstances, we offer 50 Hz units ï contact us for details), the associated pump flow rate and horsepower (contact us for custom options), and sizes for water connection. For help determining your required tonnage, use ourchiller size calculatortoday.