Although a portable air conditioner and a spot cooler may appear similar on the surface, they're actually designed for different applications, according to Mark Lupton, Heat Controller's national sales manager for room air products.

A spot cooler, explained Lupton, cools an area within a larger area. This can be a good solution for situations where temporary relief is needed - perhaps in a tent or on manufacturing lines where excessive heat may adversely affect materials, packaging, or personnel.