While this is easily the most common question, it is also the hardest to answer. There is no blanket statement that answers this question.
Penguin Chillers’ lowest recommended operating temperature is 37° Fahrenheit. Can your unit chill lower than 37° F. Our answer would be yes it can however, we strongly recommend not continuously running your water chiller lower than a set point of 37° F. On 5 gallons of water, we tested and reached temperatures down to 36° F. Keep in mind that the temperature your chiller is capable of reaching is completely dependent upon your chillers’ setup. Factors such as your goal temperature, the amount of liquid you’re cooling and its heat load plus the ambient conditions in which your chiller is being used are all variables that contribute directly to the temperature your unit will be able to achieve.