This pearl DC Inverter air conditioner by Haier has three main features that make it a worthwhile purchase for its users. These include self-cleaning which uses the cold expansion technology to remove the dirt through defrosting and Wi-Fi control which allows the users to control it with the help of their smartphones using 3g or 4g networks. It is also enabled to work on UPS when the power goes out. It automatically moves to low-frequency operation when this happens. With air circulation of 1100 m3/h and power input of 410 to 2200, it comes with 10 years compressor, 4 years PCB, and 1-year parts warranty.