We researched several purifiers, and opted for the BreathSmart, which works great for our bedroom. We are used to a noisier Honeywell, so it's actually too quiet for us on the slower 2 speeds, so we put it on 3 or turbo to lull us to sleep. It blows cool air which is welcome in the summer, not sure if we will like in the cold winter. It helps when our neighbors smoke drifts in (grrrr) once we shut the window.