Cost to Install a Furnace Humidifier – 2021

| Last Updated: August 24, 2021

National Average Improvement and Repair Cost







$ 640

$ 275

Would you do this project? According to our survey, 41% of respondents preferred DIY compared to hiring a pro.

The average price to Install a Furnace Humidifier noted above is cost data to compare a contractor’s estimate with doing it yourself.

How much is a furnace humidifier to regulate the moisture level and prevent dry conditions in a house? A heating contractor charges $640 to install a whole house furnace humidifier but you can do the job for $275 and save 57 percent. 

During the winter, a furnace humidifier works overtime to improve the air quality in your home and to create a comfortable environment. As part of a home’s heating system, a humidifier regulates the moisture level to prevent dry conditions so that your family will not be susceptible to infections or dry, cracked skin. Furnace-mounted humidifiers have controls that monitor moisture that may cause mold and fungi to grow and rot the wood.

These units fill themselves from the house’s water supply so, except for an occasional cleaning, they are maintenance-free. In addition, a humidifier can lower your heating costs. You will find that moist air tends to feel warmer, so there’s a good chance you can lower the thermostat setting and still be comfortable.

Here’s a job cost comparison of hiring a contractor and doing it yourself. A heating specialist will install a bypass, flow-through humidifier for $640, which includes labor and material. If you have experience working with sheet metal, electricity, and plumbing, you can do the job for $275, the cost of a furnace humidifier. You will save 57 percent.

If you have doubts, leave this job to a professional heating contractor with the necessary skills and experience. This job includes a rather intricate installation of the unit, cutting sheet metal and heating ducts and adjusting the unit to work properly.

If you live in a very cold climate set the humidistat which turns the humidifier on and off, to a lower setting to prevent excessive condensation.

The average price to install a furnace humidifier noted above is cost data to compare a contractor’s estimate with doing it yourself.

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Welcome! We hope you’ll find the job costs of home improvement projects useful when you’re deciding whether to do a job yourself vs. hire a contractor. We’re the authors of 20 home improvement books, most notably Home Improvement for Dummies©, Bathroom Remodeling for Dummies©, Carpentry for Dummies©, Plumbing for Dummies©, and Painting and Wallpapering for Dummies©. Our most recent book Fix It and Flip It is in its second edition. We’ve appeared as home improvement experts on television programs such as CNN, Dateline, the Today Show, HGTV and many others.