Product review (4 stars): We have very hard water and I'm not good a remembering to get distilled water all the time
These work really well. We have very hard water and I'm not good a remembering to get distilled water all the time. I run my humidifier almost every night. It dry in Az I have need to replace them about once a month not bad compared to my sons  Vicks one  I have to change every other week whim in use or after its been put up for awhile