How to size a server room air conditioner

Server room air conditioners are typically sized in kW (kilo-watts) or BTU (British Thermal Units). To quickly calculate the BTU for a server room, multiply the room dimensions in feet by 5. So for a small server room that is (30×20×16) x 5 = 48,000 BTU. To convert BTU to kWh (kilo-watt hours), multiply the BTU figure by 0.000293. So for this server room the kWh = 48,000 x 0.000293 = 14.06kWh. This calculation does not take into account the room orientation (north or south) and whether there are any windows.