This Panasonic air conditioner series (PN9WKH / YU9AKH) offers both non-inverter and inverter models ranging from 1HP to 3HP. It utilizes R32 refrigerant, known for its lower global warming potential compared to older refrigerants. The 'I-Auto' feature is included, indicating an intelligent, automated operation mode likely designed to optimize cooling performance and energy efficiency based on the room conditions.