Because of this, most are not rated to work with extension cords and must be plugged directly into your wall outlet. Using a space heater with an extension cord could lead to electrical issues and ...

When using space heaters, DO: Plug it directly into a wall. Give it a clear 3-foot radius, and keep it clear of flammable ...

A convection option that can save floor space is a wall heater—some models can be plugged into a wall outlet, but most need to be professionally installed and hardwired inside the wall.