TOTALINE IntelliMist Owner's Manual page 16

I M H
NTELLI IST UMIDIFIER
10. Factors That Affect Humidity: Additional Notes
Even though the IntelliMist Humidifier puts out more
humidity than any other whole-house humidifier, up to 24
gallons per day, it may not be possible to increase the
humidity to a high level especially if the outside humidity
is fairly low. For instance, with an outdoor air temperature
of 40 degrees and 20% relative humidity, when the air is
heated up to 72 degrees, the resulting humidity in the house
is 8%. The amount of humidity that can be added to the air
is limited by the airflow in the ductwork and the temperature
of the air. Hot air, which you have when the furnace is
running, can hold 6 time as much moisture as the air can
hold when only the fan is running. It is much easier to
increase the humidity in the house with the furnace running
versus when only the fan is running. Both applications are
limited by the amount of moisture that can be put into the air
going through the ductwork without the moisture actually
condensing in the ductwork.
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