Product review (1 stars): This BestAir, Extended Life replacement Filter Sucks!
I thought I would save some money by buying this humidifier wick filter for my sears unit.  However, this "BestAir Extended Life" wick filter was not working up to par after two weeks the "Check Filter" came on.  The water was only wicking about a 3rd of the way up and the humidity went down from 50+% to as low as 21%.  I tried to get more life out of the BestAir filter by turning it upside down and pouring water over the filter to help prime it.  Helped a little bit, but... it was sub par and only a stop gap.  My efforts got the humidity up to 45+%.  When the filter was new, the water in the unit and the tank reservoir had to be replace every 24 hours.  However, as the filter "aged" the humidifier would run for 2 - 3 days.  A good sign that the wick wasn't doing it's job!

My last Sears original filter replacement lasted me for over two seasons and into the third.

Definitely will not buy this product again!