Both the low and high settings will reach a maximum temperature of approximately 215° Fahrenheit, but they cycle differently in that the low setting cycles off of that temperature more frequently. Therefore, the high setting will still cook the food in a shorter period of time than the low setting will. On the warm setting, your Crock-Pot® slow cooker will be between 165° and 175° Fahrenheit. Please remember that these are all approximate temperatures and they can vary depending on what you are cooking. The Crock-Pot® slow cooker can also boil on high and low. We recommend that you always fill your slow cooker at least 2/3 to 3/4 of the way full, including at least one cup of liquid or sauce. You may have to adjust your cook times accordingly, especially if you are using older Crock-Pot® slow cooker recipes, or adapting regular recipes for Crock-Pot® slow cooker use. For further assistance, if you think your slow cooker is getting too hot, please contact Crock-Pot® at 1-800-323-9519; we are available Monday through Saturday from 8 AM to 8 PM, EST. Thank you for your comments.