Typical installations require interconnecting pipework between the indoor unit and the outdoor compressor. A standard installation for a single unit and compressor has a maximum of a 15m pipe run between the outdoor unit(the compressor) and the indoor unit (duct, highwall, or low-wall options). A standard installation covers buildings with walls that are of a standard thickness and are of contemporary construction (block & cavity), block only, wooden frame. Period homes with thicker walls requiring specialised drilling are beyond the scope of a standard installation.
A mains electrical supply is required ( power socket is inadequate).
All construction requirements & electrical works are carried out by your contractors.