Most people especially prefer split ACs for their home or small office areas as they provide aesthetics, performance, and installation flexibility. For a medium-sized room, a 1.5-ton split inverter air conditioner will keep it cool when the weather gets hot. Furthermore, most of these ACs feature a 5-star energy efficiency rating, so you won’t have to worry about sky-high electricity bills. We have listed the details for you to consider before you buy an air conditioner online. Energy Efficiency: Depending on their power consumption, split air conditioners are rated from 1 to 5 stars for energy efficiency. Filters: The manufacturers of air conditioners utilize a variety of filters to provide you with clean fresh air, including dust filters, dehumidifiers, antibacterial and antiviral filters, among others. So, purchase ACs that provide clean, odour-free air across the room so that you can relax in the cool breezing air without worrying.