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How Your Humidifier Works
Your Skuttle Drum Humidifier uses the same principle of evaporation that
you see in nature: a warm breeze passing over an expanse of water will
evaporate the water and raise the relative humidity, just as it does after a
summer shower.
Inside your humidifier, a polyurethane foam evaporator pad lifts water
from the water pan into the warm air stream. The pad’s multiple holes and
connecting strands significantly increase the area from which the water
can evaporate. This ample source of moisture, combined with the warm
air in your heating system, is what makes the humidifier effective.
It’s important to note that water evaporated from the humidifier leaves
behind all the impurities (calcium, iron, lime, bacteria, etc.) that were orig-
inally contained in the water. As a result, these impurities are not dis-
persed throughout your home, which keeps your living environment
cleaner and your family safer from harmful contaminants.
How to Operate Your Humidifier
Your humidifier’s output is controlled by a humidistat which monitors the
relative humidity in your home, and activates or deactivates the humidifi-
er accordingly. It is installed either on the cold air return of your HVAC
system or on an interior wall of your home.
As you can see by the chart below, recommended humidistat settings
increase as the outdoor temperature rises. This is to guard against con-
densation. (See FAQs on page 8.)
Outdoor Recommended Outdoor Recommended
T
emperature Setting Temperature Setting
-20°F 15 +10°F 30
-10°F 20 +20°F 35
0°F 25 Above 20°F 40
Your humidifier may be equipped with a humidistat that has different rel-
ative humidity settings than those shown above. If so, use the following
recommended settings:
Outdoor Humidity
Temperature Setting
-20°F Low
-10°F Low
0°F Med
+10°F Med
+20°F High
Over 20°F High
An unusually high frequency or prolonged period of indoor activities such
as showering, cooking, clothes drying, etc., may cause indoor humidity to
rise to an excessive level, causing condensation to accumulate on win-
dows. If this condition lasts for more than a few hours, turn your humidi-
fier off until normal indoor activity resumes. If the condition persists, you
should ventilate your home to remove excess moisture.
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