At a nominal cooling capacity of 4 5kw the rotartica solar 045 045v was the smallest and still may be solar absorption chiller and was appropriately scaled for residential or small commercial use. You just put that sun heated water in it you get cold water out ready to run to a conventional fancoil. 109 cm x 76 cm x 115 cm 290 kg 43 x30 x45 640 lb.