We have a small office with central air conditioning. Our server room has roughly a dozen PCs machines (Windows, Linux, Mac), some on 24/7, some on only when we need them. There's also a 40GbE switch, and a couple other bits of networking and KVM hardware that run 24/7. And we have a fair number of professional video tape decks as well, all of which generate a fair bit of heat when they're running. So it gets hot in there with no AC - easily going above 95F when the air is off. Which it never is because we keep it running at all times. In any case, we need a larger office space, but units with central air in our building are rare, and adding central air or even a split system to a space that doesn't have one is too expensive. There is a space opening up on another floor that is already broken up into rooms, some on outside walls. If we were to take this space, we would need to find a solution to cool our server room. Odds are the rest of the space would be ok with a large Window AC, as long as it's not competing with the server room's heat output. I'm thinking if we do this, a portable AC with a permanent condensate drain, and a vent to the outside for the hot air makes the most sense. It's reasonably inexpensive for a good one, doesn't take up too much space, and we're good as long as we can keep that room at or below 80F. So my question is - is there a good web site that will let me estimate the cooling needs of a server room? Like something where I can put in the number of machines, their usage profile, the size of the room, and get a ballpark of what kind of BTUs we would need an AC to output? Thanks!