There are several types of furnace humidifiers.
A flow-through humidifier for furnaces uses freshwater that flows through the system and drains away.
A reservoir throw in has a reservoir of water that moistens a rotating drum.
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And a steam humidifier heats water to create steam that is injected into the furnace airflow.
Of the three types of furnace humidifiers, the flow-through is often considered the best humidifier for furnaces.
That’s because it is more reliable, more hygienic and requires much less maintenance than reservoir types.
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How Much Do Furnace Humidifiers Cost?
How much it costs to add a humidifier to your furnace can vary widely.
On average, a humidifier for the furnace costs between $398 and $753.
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Prices for the labor to set up the humidifier also can vary by location, company, and model.
A reservoir/drum bang out costs $100 to $300 on average.
And a steam model costs around $500 to $2,200.
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A flexible copper water line runs between the valve and the humidifier.
The solenoid is controlled by a humidistat, which operates as a kind of thermostat for humidity.
When the humidistat calls for an increase in humidity, the solenoid opens and supplies the water feed tube.
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The water inlet orifice is attached to the valve bottom at the lower water-supply connection.
After a season of use, the metal pad will be coated with white powder of minerals.
This is a key benefit of flow-through humidifiers.
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With reservoir humidifiers, water stands for a period of time.
Furnace Humidifier Humidistat
The humidistat controls humidity levels much like a thermostat controls air temperature.
Do You Need a Furnace Humidifier?
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In many cases, it is good to put a humidifier on your furnace.
Heat can dry out the air in a home, causing dry skin, static, and more.
International Association of Certified Home Inspectors.
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Humidifiers and Indoor Allergies.
American Academy of Allergy Asthma and Immunology.
Why and Where Mold Grows.
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U.S. Environmental Protection Agency.
