Right now, my racks are all in one of the bedrooms. However, I have discovered that the utility room (where the water heater is) is quite large and has more than enough room. There are even outlets in there. I was originally just going to use it as storage but I have a shed and a crawl space basement for that.
I understand that I would probably need to have a heater in there during the winter to keep the ambient temps up.
So before I move forward much on this I was wondering if anyone else uses such places?