The Hisense CB Series air conditioner offers cooling solutions ranging from 1.0HP to 2.0HP. These models (AN09CBG, AN12CBG, AI09CBGS, AI12CBGS, AI19CBGS) utilize R32 refrigerant, which is known for its lower environmental impact compared to older refrigerants. The 'AN' models likely represent standard cooling models, while the 'AI' models may include additional features such as inverter technology for energy efficiency or smart home compatibility. The specific features and energy efficiency will vary depending on the chosen horsepower and model within the CB series.