Here is a brief overview of inverter air conditioners and installation: An inverter air conditioner like the Samsung 18000 Btu AR4500 offers more efficient cooling and lower electricity bills than a regular aircon. Instead of turning fully on or off, the inverter activates partially based on the set temperature for smoother operation. Installation is straightforward - a licensed technician simply needs to mount the outdoor and indoor units, evacuate the refrigerant lines and perform a gas charge. The Samsung AR4500 comes highly rated and at R12,999, it provides powerful cooling for large rooms without breaking the bank. Installation is around R2,400 but often included for premium units. Let me know if you have any other questions!