Product review (3 stars): Why Oh Why Does It Always Overflow??
I would give this unit 5 stars except for the design flaw of each and every time I add a new bottle, it spits water out everywhere. I have tried adding the new bottle slowly, quickly, and normally. It does not matter, it always always always spill water all of over my floor. If at the manufacturer they let this flaw get through  quality control, well then shame on you Della. Otherwise this product is fantastic. But I would recommend looking elsewhere unless you don't mind water on your floor each and every time you change the bottle.