Works fine with bucket, haven't tried pump. Initial unpacking and setup and completed without a hitch. Page 4 of Operating  Instructions states: "When you first use the dehumidifier, set the humidity control to 45% or 50%." However, at the top of page 5 it states: "When first using the dehumidifier, operate the unit continuously for 24 hours." I set it at 45% and let it run all night. When I checked this morning the bucket was full so I emptied it and it continues to run with 6 hours to go before reaching the initial 24 hours. The unit is much quieter than the no dead two year old  Haier 50 pint unit it replaces. I could hear the older unit from the top of the basement stairs whereas to hear this one I have to go all the way to the bottom of the stairs and round the corner. Since Chinese quality control seems to be lacking (chabuduo) I purchased a 5 year contract from the seller.