Overview The MRCOOL Olympus 18k Ductless Mini-Split Wall-Mounted Air Handler is an affordable and energy efficient option to handle the heating and cooling in one area of your home. It features an easy installation and set up with wifi-enabled digital control via the SmartHVAC app or your Amazon Alexa or Google Assistant. You can also control the unit with the included remote. Other useful features include auto restart, Sleep mode, auto swing, and the convenient Follow Me function.