Blue star 1.5 Ton is the air conditioner's cooling capability, expressed in tons or BTUs.Energy Efficiency Rating 5 Star more stars denote greater efficiency; a 5 star rating indicates excellent energy efficiency.Inverter Technology by adjusting the compressor speed in response to cooling requirements, inverter air conditioners (ACs) save energy and offer more accurate temperature management. Model Number IC518TNUR features for Cooling an explanation of several cooling systems, including turbo cooling, auto mode, sleep mode, and multi-stage filtration.Type of Refrigerant Details regarding the type of refrigerant (usually R-32 or R-410A) utilized.Display and Controls: Information on the digital display for settings, the control panel, and the features of the remote control.Level of Noise: Details about the noise the air conditioner makes while it's running.