subject: 14000 BTU Portable Air Conditioner [print this page] Some portable air conditioners are 7500 to 8000 BTU and can cool 150 to 200 square foot rooms. These are the smallest and most economical of them. Some have separate cooling and dehumidifier functions and it is possible to select any mode. A timer, air filter, temperature display and three cooling/fan speeds are the different characteristics. For areas of more than 200 square feet, a unit of 9000 BTU is needed. These may have an ion generator. There are two sizes : 9500 and 11500 BTU that have multiple speeds and a remote control. A drip container holds condensation. Some units have a self-evaporating technology. A few have a capacity of 10000 BTU for a room of 250 square feet, a two speed fan, washable activated carbon filter to remove odor, a remote control and an 8 hour timer.