Here we have 2 parameters both of which have to be satisfied for an apt answer to the question. Firstly, you need to make sure that the heater is safe to be used. Electric space heaters are much safer than the other ones. This is why the Lasko Electric Tower Space Heater is the best option you have in your clutches. It is a good heater for large spaces and safe enough to be used around kids as well. The unique oscillating feature of the heater keeps the entire space warm for long hours.