10,000 BTUs cools spaces up to 450 square feet, R32 Refrigerant: environmentally friendly, R32s GWP (Global Warming Potential) is 3x lower than R410a, Inverter Compressor: up to 35% energy savings with advanced DC inverter technology, U-Shape Design: provides the flexibility of opening your window to allow fresh air into the room as desired, Silencer Technology: operates as low as 36dB. Unit is 9x quieter than traditional units.