Instruct: Classify Amazon reviews into positive or negative sentiment
Query: replacement filter does not perform like original

The original filter that came with the unit worked fine and it was easily able to humidify two large rooms. This replacement filter, however, does not seem to wick water very well. It can barely keep a 17x12' room at 30% humidity with the door closed, windows shut and heat turned off. And it's in the 40s -- not even very cold out. In fact, it wicks so badly that for the water level to change in the tank I have to flip the filter every hour or so. I called Hamilton Beach but they said it wasn't their problem because the filters are manufactured by 3M. Of course, this is the only filter offered for use with this unit.