10
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 A DEMINERALIZATION CARTRIDGE
The HoMedics demineralization cartridge will help reduce the potential for white dust, a deposit of
minerals left behind from using hard water in your humidifier. 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 the demineralization cartridge from packaging and let it soak in water for 10 minutes.
2. Remove the tank from the humidifier base and turn it over.
3. Unscrew the tank cap by turning counterclockwise.
4. Fill the tank with water as shown in the How to Fill section of the instructions included with
your humidifier.
5. Add the soaked demineralization cartridge into the tank.
6. Replace the tank cap by turning clockwise.
7. Turn the tank over and place the tank back on the base.
Demineralization Cartridge
To purchase new Demineralization Cartridges, Model # UHE-HDC4, go back to the retailer (where you purchased your humidifier),
or visit www.homedics.com (US), www.homedics.ca (CAN).
