Evaporative cool mist humidifiers cannot run without the use of a wick filter.
The harder the water, the shorter the filter life. This is because minerals will get trapped in the filter over time and cause the filter to lose its ability to wick. We recommend you replace your filter every 4-6 weeks, depending on usage and hardness of water. In some evaporative cool mist humidifiers we have included a Filter Check indicator that will indicate when the filter needs changing.
The Holmes Wick Humidifier Filter includes a unique feature, an exclusive layer of ARM & HAMMER Baking Soda which helps remove household odors.
A perfect solution to enhance your home environment, personal comfort and well-being. The Holmes HWF75CS (D) Wick Humidifier Filter transforms dry, damaging air with a balance of cleaner moisture and gentle restoration