70 ltrs VN-D70M DESERT COOLER is like an AC you get . One room about 460 square can be cool with this product . It’s tank capacity as shows its name is 70 liters. It has an auto fill tank system . It use only 330 watts of power supply it means that you can run it on your inverter. It can also rotate it’s air and by stopping the function the cool air run in a single way. So I think it should be purchased in no time.One can feel the he purchased as an AC. It’s create a very low sound also.