I can find solar-powered attic fans online. I can find bathroom exhaust fans online. But I can't find a solar-powered bathroom fan. Do they exist? I can see using a regular exhaust fan when you're using the toilet or bath/shower--more moisture-laden water needs to be moved out quickly. But could you also install a solar one that essentially runs all the time (at least during the day)? Yes, there would be some heat/cooling loss, but most people who have bathrooms with windows (this particular bathroom does not have a window) do leave them open an inch or two for ventilation, regardless of the weather, at least in 3-season climates. Would the one fan running interfere with the other one? Why am I asking? DH is tired of me hanging the damp towels on the exercise equipment overnight (since he does use the exercise equipment). I do hang them outside in good weather, but would prefer that they stay in the bathroom to dry between uses--especially since some of the children (even the older ones), instead of getting the dry towel off the line, just go ahead and get a new one, which creates more laundry....grrrr. Thanks in advance for any thoughts and ideas.