EKA Aircond M&E Services is specialised in maintaining and servicing wall mounted AC. We have specialized in installation of wall mounted AC as well as maintenance works.
Wall Mounted AC requires a hole through your wall in order to fit in, so the installation is not as easy. A good position for the hole is required for the air conditioner to be able to provide air flow for the entire room.
Once the installation is done, a sleeve is inserted to properly hold the air conditioner unit in place. After it's set, insulation around the sleeve and in some cases around the air conditioner unit itself is required.
The downside is that digging a hole on your wall is required. The installation is hard and requires a lot of work. If not well insulated, wind will enter your house. Once installed, it cannot be moved.