How to stay cool in a room without windows can be a conundrum. How to stay cool in your house as you move throughout a number of rooms, some of which have windows, some of which don't is another conundrum. Thankfully, there is a solution: a portable air conditioner that doesn't require windows. Such machines are (relatively) compact electrical devices that are similar to space heaters but perform the opposite function.
Soleus Air manufactures a full range of portable air conditioners; the company produces 18 models in total. A number of these models, such as the PA1-12R-32, do not require windows to operate. The PA1-12R-32 works as an air conditioner, a heater, an air purifier, a dehumidifier and a fan. On air conditioning mode, the PA1-12R-32 produces 12,000 British Thermal Units (BTUs) of power, which is the amount of power required to raise 1 lb. of water 1 degree Fahrenheit. The unit is designed to evaporate all excess water, eliminating the need for an exhaust system.
MovinCool is a division of the DENSO Corporation that manufacturers portable air conditioners for small and large spaces. As of 2010, the company produces 13 models of portable air conditioners, none of which requires a window for use. One such unit, the PC7, is designed for use in confined spaces, such as bedrooms, and similarly proportioned quarters. The unit operates on 9000 BTUs per hour and will run on a minimum of 105 volts and a maximum of 125. Like the Solues unit, the PC7 is designed to evaporate accumulated moisture so that no exhaust system is required.
Worldwide home appliance supplier Danby produces a full range of portable air conditioners that do not require windows. One such unit, the DPAC10010, operates on 10,000 BTUs and is equipped to store up to 54 pt. in a 24-hour period. Unlike the MovinCool and Soleus Air units, the Danby air conditioners do not evaporate moisture. However, they can be drained manually or directly when connected to waterlines. Thus they do not require exhaust systems that need to be routed out windows. The DPAC10010 is equipped with an LCD display and three fan settings and is purported to cool up to 450 square feet of space. Other Danby aircon units can handle larger space requirements.