Dora DA20K10R is a great Window Air Conditioning Unit. With a cooling capacity of 18,000 BTU, the DA20K10R is a great value and quality for any air conditioning unit that utilizes Japanese Technology. The rotary compressor provides impressive power ensuring that your room environment is optimized for your own personal comfort. With a coverage are of 31 square meters suitable for the average room. F Class Energy Rate ensures and efficient system.