For twenty something years these space heaters have worked great, with few problems. Other than two have needed new switches. Yesterday, I plugged in a heater, turned it on, walked out of the room for a few minutes, when I heard a jet engine blast off. I had to think about it for a few seconds because I had been watching a show on TV about space travel. I finally realized that sound wasn't the TV. When I ran into the room, the heater was blasting fire and noise like a rocket going to the moon. That was the heater that still had the original switches. When I plugged it in I was thinking about how good a heater it had been. Its made me have doubts about these other two heaters.
This is the sort of thing you hear about happening to other people, never expect it to happen to you. Over the last ten years two houses in my neighborhood have burned down, from space heaters catching on fire. These heaters work good enough that I save money by not having to run the central heating as often. They're oil filled, and use little energy to heat up.
If I hadn't been in such a hurry to unplug it, I should have taken a video of it.
When I get the new heaters, I just ordered, I hope they last as long as the old ones.