When we saw an AC unit in the wall of a vacation rental in Key West, we knew it was a solution for our home office. The downside of using a portable air conditioning unit, designed to fit in a window opening, is that it prevents opening the window in mild conditions for natural cooling. By building a unit into a wall, you can free up the window for operation and have a permanent installation.
This works particularly well for cooling a small addition or part of the house that isn’t cooled naturally. When a unit is mounted high on the wall, it does a good job of cooling the space efficiently and effectively. A key requirement is to place it near a 115-volt electrical outlet, or have one added near the location on the wall. That electrical work requires a professional installation, which will cost about $250.
