Product review (5 stars): Please make sure you follow the directions for cleaning your humidifier and replacing the filter
We got the&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Honeywell-QuietCare-9-Gallon-Output-Console-Humidifier-with-Air-Washing-Technology-HCM-6009/dp/B000G0LDRI/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Honeywell QuietCare 9-Gallon Output Console Humidifier with Air Washing Technology, HCM-6009</a>&nbsp;and are really happy with that choice. It's quiet...not hard to maintain...portable...has flexible settings to get the right humidity for the right duration...and easy to fill with water because of 2 tanks. Our cats seem to worship it as they sit in quiet adoration, drawn to the gentle water gurgling.

As I followed all the directions for cleaning including the vinegaring and bleaching, I thought maybe I could get the filter to last for more than the one year specified. But, ew, upon packing it up for the summer, I found black mold at the bottom of the filter. Out it goes. I ordered this replacement filter plus&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/ProTec-PC-1-Humidifier-Tank-Cleaning-Cartridge-Pack-of-2/dp/B000XPT0DK/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">ProTec PC-1 Humidifier Tank Cleaning Cartridge (Pack of 2)</a>&nbsp;to guarantee clean and fresh humidity.

None in our family has problems with asthma or other breathing maladies but it's nice to know this unit is putting out clean air. I urge you to buy this replacement filter every year to do the same.