This is a junk item. I purchased it in February 2021 and used it about once a day. Currently, the heater does not turn on when the dial is turned. To be precise, there were times when it would turn on and times when it wouldn't at all. The frequency of it not turning on gradually increased, and now it almost never turns on (it occasionally turns on if I try it repeatedly). It may be a problem with the thermostat. For those who can repair it or need parts. Please purchase with the understanding of the condition.