We do not have exhaust fans in our bathrooms. Our house is older, and they were never installed. Luckily one bathroom (which has the shower in it,) also has a window. In the summer it still gets really hot and humid in there, and I find myself cleaning a lot to prevent mold. I really dislike cleaning every time someone takes a shower, so I got this dehumidifier to put in the bathroom. It is a perfect size and works great to get rid of extra moisture after showers. Plug it in, turn it on, and once the basin is full, the machine automatically shuts off. A great investment for anyone with humidity issues in their bathrooms.