For Cyprus, the measurement zone corresponds to the warmer zone and is measured from A+++ to A+, with class A+++ being the most efficient. The energy class of an air conditioner differs between cooling and heating, and is denoted by the seasonal heating efficiency rating (SCOP) and the seasonal cooling energy efficiency rating (SEER) respectively. The higher the respective index, the more efficient the machine is in the specific function.

Generally are quieter than other air conditioning units, as the main unit is located on the ceiling and the noise is partially absorbed by the construction. However, the noise depends on the model and installation.

The installation can be done either on the floor, offering a direct supply of cold or hot air at a low height, or on the ceiling for a more even distribution of air. Requires professional installation to ensure proper operation and best performance.

The portable air conditioner is a self-contained device that can be easily moved from room to room. It has wheels for easy movement and usually has an exhaust pipe to expel the hot air to the outside.