Portable air-conditioning units are nothing new. They have largely been used for emergency applications when an indoor environment is in need of immediate cooling after a building’s air conditioning system has shut down or failed.
But several manufacturers are beginning to market their portable air conditioning units as more than just a solution for temporary and emergency cooling. Many of the products on display at the 2003 Air-Conditioning, Heating, Refrigerating Exposition (AHR Expo) were sporting new looks and recent upgrades, and manufacturers were supplying new reasons to use the products in primary applications.