The Panasonic KU-Series X-Deluxe Inverter air conditioner utilizes R32 refrigerant, known for its lower environmental impact compared to older refrigerants. It is available in various horsepower options (1.0HP, 1.5HP, 2.0HP, 2.5HP, and 3.0HP) to suit different room sizes. As an inverter model, it offers energy-efficient operation by adjusting the compressor speed to maintain the desired temperature, reducing energy consumption and providing consistent cooling. The 'X-Deluxe' designation suggests premium features and enhanced performance within the KU-Series lineup.