I purchased this baby for a small, humid bedroom in a very humid climate to help the A/C unit remove moisture. It removes maybe a cup a day which probably helps overall, but does not make a tremendous difference in comfort level. It works steadily, but is probably too small for the task.
UPDATE: After a few months on effort, it began to make a loud, constant noise so I discontinued use.
UPDATE #2: Last summer was so hot and humid that I decided to give this unit one more chance. It takes a little finessing, but it is possible to stop the noise if you keep jiggling and thumping it. Once it runs quietly for a minute or two, it is usually good to go until you turn it off to empty the reservoir.