Like all DC-Inverter air conditioners, the ACDC12 compressor runs on DC power converted from AC power. But this special solar air conditioner can also accept DC power directly from solar panels, without needing an inverter, controller, or batteries. The solar DC power directly replaces an equivalent amount of AC power from the power company and can cut daytime energy costs for air conditioning or heating by 80% or more. During the day, the ACDC12 can get most of it’s power from solar resulting in an efficiency above SEER 35 when using two 230W solar panels. The unit can be connected with up to three 250W panels up to 750 total Watts. The system is designed for hybrid operation with solar providing most of the energy needed during daylight hours. This air conditioner must be connected to a 220VAC power source and is not designed for off-grid operation.