Product review (5 stars): Great alternative to the more expensive name brand filter...
I am very happy to have found these Replacement Humidifier Filters for my Holmes Humidifier. These wick based humidifiers, are far superior to their ultrasonic alternatives due to the effectiveness and precision in controlling true relative humidity. I use vinegar, a cup to enough water to immerse the filter in a bucket not much wider than the filter diameter. The vinegar does away with the brown mineral deposits, and makes it as good and efficient as when new. Never let the water in the tank run out, and these filters, with weekly vinegar treatment, will last up to two months or so each. When the plastic housing begins to wear out, it is also about time you changed the filter. Folks who gave this product a low rating based on extraneous factors to do with the noise of the main unit should know better. These reviews are about the filter and not the main unit! Also, despite the antimocrobial properties, some mold formation is inevitable in humid environments, so I clean the main unit every few months to get rid of any mildew or mold residual in the unit, this includes the grille and the fan components. I would recommend these Humidifier Filters to anyone in need a good cheaper alternative to the more expensive factory replacements that are available. **I received this product at a discount in exchange for a fair, honest and unbiased review. I have no affiliation with the seller and am under no obligation to leave a positive review. This review is my opinion and based on my experience using this product. A positive review by me is never guaranteed to the seller, but an honest review is.