The 1.5hp is a split-type inverter air-conditioning unit designed to provide efficient and reliable cooling for medium-sized residential and light commercial spaces. It belongs to a line of air conditioners known for combining modern energy-saving technology with practical cooling performance. Although exact suffix variations (such as ZG21I) may differ by region or retailer, they generally represent a 12,000 BTU class inverter model within the same product family. At its core, this air conditioner delivers a cooling capacity of approximately 12,000 BTU/h (around 3.5 kW), making it suitable for rooms roughly in the range of 15–23 m2, depending on insulation and heat load conditions. The system is powered by a rotary compressor with inverter technology.