Which space heaters are the best? How about the ones that use oil?

I have had terrible luck with space heaters. Airwork's fans seem to go in a few months. Is there a way to oil electric fan motors. They make quite a noise. Have to turn them upside down to get noise to stop. How about the radiator type heaters that use oil instead of water . I think the oil is heated up electrically.
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many fan motors have oil ports, the oil heaters are nice , and well made.
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Oil or baseboard style are the most rugged in my experience.

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ok, thanks. I will try the oil ones. I searched old posts and they seem to make people happy. anything is better than these stupid fan/coil heaters.
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