Every 220 volt heater I could find was only available with a dial thermostat built into it. It has been my past experience that none of them are very accurate and tend to be the first point of failure. Finally I found one with a separate thermostat that I can place away from the heater! I now have the thermostat mounted where it is easy to read and make changes to, and it does not constantly cycle on and off like those cheap ones made into the heaters. THANK YOU!