LPT: Never, ever plug a space heater into a power strip or extension cord. Plug it directly into the wall outlet.
Most power strips aren't rated for the continuous high amperage a heater draws. They can melt and catch fire without ever tripping the circuit breaker. My neighbor almost lost their apartment because of a "heavy-duty" strip that couldn't handle the load. If the cord feels hot to the touch, unplug it immediately. #entertainment source