This crawl space dehumidifier with a built-in condensate pump will drain automatically when connected to the water hose. Along with the included 325 cm long drain hose, the excess water can be drained into a sink or upstairs. The max drainage vertical height is 400 cm. Featuring 355 m /h airflow rate and a large air outlet, this commercial dehumidifier is able to remove 77L of water from the air per day at 35 , 90% Rh ( 42.5L/day at Aham). And the dehumidifier can efficiently dehumidify large spaces up to 40㎡.