SPT SU-4010 can cover up to 500 square feet with just one unit. The power of it was a pleasant surprise because it's only 12.4 inches high and 13.2 inches wide. It may be small but packs a powerful punch when it comes to humidity. One of the special attributes we love about this humidifier is that it can be used year-round.
It can disperse warm or cool mist, and in a 360 degree direction as well. It comes with an adjustable split nozzle so that you can cover a wider area at one time. It also comes with an ION exchange filter that treats your water and removes extra calcium and magnesium that usually comes from hard water. By keeping the machine clean of these things the unit will last a whole lot longer.