Well it makes noise, unfortunately the amount of air it moves is very small. If this is what you're watching and expecting to actually feel the air out of your heater, this isn't what you're looking for. I'm not sure if it's moving air. It's not possible to install it backwards, but I put my hand on the back to make sure the air doesn't go that way. I don't recommend this fan who knows they can all be so bad
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