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 the 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.