I was regret for bought this thing. The price is great, but you get what you pay for. I needed for my music room so I bought this one. I need to protect my piano and violin from the dryness during freezing temperature outside with the house humidity went down below 30%. OMG! the fan was soo noisy even set on low and with all day running this thing, my tiny music room could barely reach 45% humidity. Not too happy about it. I used this for about 1 and 1/2 weeks, I just can't stand the noise while practicing my music; so I went out and bought an awesome quiet one and no filter buying and I lOVe my new humidifier, a little more expensive (not much more) and I think I can save tons of money not to have to buy filter. Anyone want my old one? I think I will trash this one.