If you have the time to reallocate a few times during the day or at least once the floors then that's not a big problem and a device obtained with a good price / performance ratio. But if you imagine you could turn on the device, left to themselves, for example, overnight and after 12 hours will receive a perfectly uniform parched result you will be disappointed. Unfortunately I have no comparison to a more expensive unit with recirculation function but I suspect that this problem would be less pronounced here.