Daikin FTKE series air conditioners are inverter-driven units utilizing R32 refrigerant. This series is available in various horsepower options: 1.0hp, 1.5hp (3-star energy rating), 2.0hp, and 2.5hp (4-star energy rating). The inverter technology provides energy efficiency and consistent temperature control, while the R32 refrigerant offers a lower global warming potential compared to older refrigerants. These air conditioners are designed for cooling residential and commercial spaces with varying sizes and energy efficiency requirements.