We often had this same debate at the Y. With or without "hot" spin classes, there will always be people who prefer a fan and those that don't. I fell into the former group, but I have some heat intolerance issues and I understand why somebody wouldn't want a fan blowing on them during a workout. At one of the branches I frequented, the room was big enough that we could have temperature zones. One side of the class had a fan; the other didn't. At another branch, you just had to be really strategic with where you set up a fan and where you set up your bike. In any event, I would talk to the instructor and/or gym managment to see if a compromise can be fashioned. It shouldn't be something that members are fighting about amongst themselves.