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0787 Air Flow Through Humidifier - Heating - Humidifiers
0787 Air Flow Through Humidifier - Heating - Humidifiers -

Image Text: Supply plenum > air flow > humidifier duct damper (close off airflow in summer open in winter) > air flow > return air > the humidistat is often located with its sensor in the cold air return above the humidifier to get a good overall reading of the house humidity > locating the humidifier on the cold air return helps to minimize damage to the heat exchanger in case of leakage (very common)

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