I haven't cooked anything major yet. But the fan seems to suck really well.  I like the 4 speeds,  but not sure I would ever need boost mode, it sounds like an airplane taking off! I love the look and so far how it works.  I have it scheduled for the lights to be on at certain times and we hooked it up to our Alexa for hands free usage when cooking. I can't give it 5 stars yet until I use it more.