Problems can arise with an improperly installed through the wall air conditioner unit. For example, a miscalculation of the size or location of the hole can cause aesthetic and efficiency troubles. The sleeve that helps support the unit must also be the right size.
Furthermore, insufficient insulation around the sleeve allows cold or hot air from outside into your home, defeating the purpose of the unit. These mistakes, and more, could mean inefficient operation, and higher operation cost, and future struggles with what should have been simple maintenance tasks.
Keep some key points for your installation in mind. Number one, be sure that the system is placed in a location that allows unrestricted air flow from the outside. Second, be sure that all components are appropriate to the task.
This could include the air handler, which is responsible for cooling and moving the air. It is also wise to make sure that the level of the refrigerant is where it should be. Last, place the thermostat in a convenient location, high enough to be away from young hands, but low enough for easy adult operation.
All air conditioners should come with installation guides that will explain the necessary steps for installation. Please keep in mind that it is not a simple job. If there are any qualms about the task, set you worries aside and allow a professional to do the job and give you peace of mind.