ABOUT WHITE DUST
Use of high mineral content hard water may cause a white mineral residue to accumulate on surfaces
in the room near the humidifier. The mineral residue is commonly called "white dust." The higher the
mineral content (or, the harder your water is), the greater the potential for white dust. The white dust
is not caused by a defect in the humidifier. It is caused only by minerals suspended in the water.
HOW AND WHY TO USE DEMINERALIZATION CARTRIDGES
The HoMedics Demineralization Cartridge will help reduce the potential for white dust. The cartridge
should be replaced every 30–40 fillings. The cartridge may need to be replaced more often if you are using
very hard water. Replace the cartridge when you notice an increase in white dust buildup. If white dust
still forms around the humidifier after a new cartridge has been installed, consider using distilled water.
If you live in an area with hard water or use a water softener, we recommend using distilled water
for better results from your humidifier. Never use water-softening additives in your humidifier.
INSTALLATION INSTRUCTIONS
1. Remove demineralization cartridges from packaging and let them soak in water for 10 minutes.
2. Fill each tank with water as shown in the How to Fill section of the instructions.
3. Add the soaked demineralization cartridge into each tank.
Demineralization Cartridge
To purchase new Demineralization Cartridges, Model # UHE-HDC4, go to the retailer where you purchased your humidifier, or visit
www.homedics.com (US), www.homedics.ca (CAN).
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