While some portable heaters have safety features, it is a general rule to make sure that you don’t leave them unattended. Portable heaters can still create a potential safety risk. Turn on the heater in advance so that once you get to sleep the room is already warm enough. If you think that you will fall asleep immediately, make sure that you turn it off before going to bed. A remote controlled heater is a good option so you don’t have to get up.
Just remember that even if you have already taken the necessary precautionary measures, bottom line is there will still be a great risk that leaving your heater turned on can cause fire. This is because the device can overheat or it may overheat other objects that are inside your room. Aside from that, it can also make your skin dry and can even affect your nasal passages as well.