A back to back split system air conditioning installation is the simplest type of installation. The outdoor compressor unit is located opposite the wall mount unit inside.
In the images below we show several back to back installations. These were done at various locations, an office in Nerang, a State school and two YMCA. What you see is the external unit. The head unit located on the other side of the wall. That’s why they’re called back to back installations. Where extra piping is required why will quote you extra according to how much is needed.