Having the best portable ... your air conditioner breaking. Although your AC unit should be away from open and sunlit windows, there is an exception to this rule if you have a window air conditioner.

Both types of units are vented out the window, but a portable air conditioner does that through a hose, allowing you to move it from room to room much more easily. While central air conditioning ...

So our first and best advice is to buy a window unit, which can be both cheaper and more effective at cooling a room. In our portable air conditioner tests, we measure how long it takes a unit to ...

The least energy-efficient window air conditioner I tested still uses less power than the most efficient portable unit. Air quality: Before and after running the air conditioner for two hours ...