I wonder if our Samsung is not the same way. I know what you are talking about the cycling because our old one at the old house did that. Yet I was kind of listening to ours here in the house for it to do that and I never heard a change in the sound as I had it on 50%. So I wonder if some of the higher end in other brands don't operate that way also. This is an over the stove top unit with built in hood and fan for the stove underneath. It is about 11 or 12 years old. If it still cycles I can't tell it by the sound.