It takes some forethought to correctly install a central air conditioner, and it’s not only about where the gas line set will need to go through the wall and into the house. When selecting where the air conditioner should be installed on the outside of the house, numerous things must be addressed, including whether the unit should be positioned directly on the ground or lifted off the ground.
Air conditioners are commonly installed on top of a huge patio stone or on a poured concrete slab, but these days you’ll see more and more air conditioners mounted on brackets that are attached to the side of the house and raise the unit off the ground. There are various reasons why you’d want your installers to go out of their way to use raised brackets rather than installing the unit on a stone or slab. The same goes for split and indoor AC units.