Our air pump never runs, only if you press it up or down to change the firmness. When you do change the firmness ours is loud. It sounds to me like a vacuum cleaner. But we never need to change it. Sometimes I will decide I want it harder or softer but that is the only reason to ever change it. It is sort of like " set it and forget it". It never gets warm or cold, always the same as a regular mattress. In fact, I forget it is an air mattress. I can't tell the difference. Nothing happens when the power goes out.
It is funny, I can't see how someone wouldn't like it. I guess it IS a love it or hate it thing.
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