Other things to consider when choosing a portable air conditioner
There are many different brands and levels of portable air conditioners available to consumers these days. Many of these are evaporative, which means there are no water tanks to empty. Still others require you to drain the internal water tank every 12 hours to several days. The type of portable air conditioner you choose may depend greatly on where you intend to exhaust it. For instance, if you are going to exhaust the air conditioner through the attic or a drop ceiling (for units that qualify for attic ventilation), you do not want moisture to be exhausted with the hot air so you would not use the evaporative type. However, if you are exhausting the unit through a window, the evaporative type would be a good choice.
You might also want to consider the portable air conditioner's other modes of operation you will require. Portable air conditioners dehumidify the air and can also be used as fans. Some units can be used as dehumidifiers (separately from the air conditioning function) and/or heaters.
Another consideration is picking the control type of portable air conditioner that fits your needs. You can choose electronic controls, which offer features such as remote control, louvers that can be set to swing automatically or advanced programmable timers. You may also choose the manual control type, which is simpler to operate and can restart cooling process after a power outage without human intervention.
Finally, the systems energy efficiency ratio (EER) rating and sound level will play an important part in your decision to choose a specific portable air conditioner as well. The higher the EER rating, the more efficient the unit is.