We've rounded up the best Prime Day air conditioner deals on our favorite portable and window units. Shop these models now ...

Now that summer is in full swing, the best air conditioners on Amazon are helpful home appliances to install in a pinch.

Window-mounted AC units come in various sizes and cooling capacities, ranging from about 5,000 to 25,000 BTU (British thermal units). As a general rule, you need about 20 BTU of cooling for every ...