Our units can be set to a maximum temperature of 35 degrees, and a minimum temperature of 5 degrees.Related ArticlesWhat should the heater be set to when the socket is connected?“FO” shows in the heater´s display. What does it mean?My heater doesn´t heat – What do I do?My Mill Convection heater does not generate any heat. What do I do?My Mill Oil Premium heater does not generate any heat. What do I do?