Bluestar 1.5 tons of capacity 5 stars for energy efficiency (high energy efficiency may lead to decreased energy usage).It is likely equipped with inverter technology for more accurate temperature control and energy-efficient operation.This model is IC518VNURAV features for Cooling details regarding particular cooling systems, including intelligent cooling modes, multi-stage filtration, and turbo cooling. Information regarding the type of refrigerant used, typically R-32 or R-410A, which may have an effect on efficiency and environmental friendliness.Controls and Display Details regarding the digital displays for temperature settings, the control panel, and the features of the remote control.Measured in decibels (dB), noise level is a specification of the noise generated during operation.