Honeywell Steam Humidifier Professional Installation Manual page 6

While the steam humidifier and its available filtration options help to address the issue of water quality and
hardness, homes with extreme hard water problems should consider using a whole house water softener as
the primary filtration device. Use of a whole house water softener will help protect the humidifier from excessive
maintenance requirements as well as undue wear and tear in homes with hard water.
In applications with a water softener, it is critical for the steam humidifier to draw its water supply from the cold
water line after the water softener.
Note: Be sure to check all local plumbing codes before beginning installation.
Hard water source
4
Use Steam Humidifier with water that is less than 1 grain
BEST per gallon hardness. A properly functioning water softener
will accomplish this.
PRACTICE
Cold softened water
Water
Heater
Water
Softener
Steam humidifier draws water
from cold water line after whole
house water softener
Furnace
Steam Humidifier System 69-2285—09
M35265