Thanks PoolDoc. Good points, some of which I hadn't thought of. I will ask more questions next time I view the property again, but in the meantime, here are some pics of the pool room. It's an extension to the back of the house, so the wall between the house and the pool is actually the original exterior wall, which I assume would be just as good as a separate room? When looking at the house from inside the pool room, that wall is all brick. Also, the pump/hvac/etc is in a separate shed outside the pool room in the backyard (the door on the right of the first pic below leads to the shed). And in the pic of the backyard, you can see there's nothing above it (the angled roof is above the brick wall, not above the pool). I know they're crappy pics, but does it seem as though the room was designed well enough? Oh, one more thing, this pool is at least 10 years old, and we were looking for rust but couldn't find any. Of course, we didn't look inside any receptacles, but will next time if he will let me.