Installation position for a ductless mini split is important buy not mandatory. Off course, height is the most important factor when considering the performance of your air conditioner. Ductless mini split air conditioners should be installed 4-10 inches from the ceiling. This lets the cool air flow outwards through the risen warm air and descend towards the floor. I have had people ask if it is alright to install the indoor evaporator air conditioner lower down the wall? Yes, you can install them anywhere, but the best performance will be obtained with a higher install. Below are a few other factors to consider when installing your ductless mini split air conditioner.
To be installed at the position where the air delivered from the unit can reach every corner of the room
To avoid being affected by the outdoor air
To avoid too much oil, smoke or steam
To avoid where acid solutions are frequently used
Not to install on top of musical instruments, TV’s, computers or valuable appliances
Not to install near fire alarming devices (the warm air from the unit could erroneously trigger alarms)