5 Types of Whole House Humidifiers That Will Benefit You Most

No system is one-size-fits-all

Young Woman Waters Her Houseplants
Photo: RyanJLane / E+ via Getty Images
Young Woman Waters Her Houseplants
Photo: RyanJLane / E+ via Getty Images
Jacqueline DeMarco
Contributing Writer
Updated January 3, 2024
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Dry air comes with itchy skin and a sore throat. Not only that, but dry air can also suck moisture out of wood floors and furniture, causing them to crack or split. The best way to prevent overly dry air in your home? Installing a humidifier.

Whole-house humidifiers, also known as furnace humidifiers, are the most efficient for keeping you—and your home—comfortable. There are several whole house humidifier types to choose from, so consult this list before you add-to-cart.

Types of Whole-House Furnace Humidifiers

Furnaces produce dry heat, so furnace humidifiers are necessary to replace that harsh air with air that’s clean and moist. This prevents damage to the home, and helps you and your family breathe more comfortably.

If you live in an area with seasonally low humidity, you definitely need a whole-house furnace humidifier to distribute healthy air throughout your home. But if you live in an area with a dry climate, you may need a whole-house dehumidifier instead.

How does a whole house humidifier work? That depends on the type you are dealing with. Common types of whole house humidifiers include bypass, fan, steam, evaporative, and self-contained. While they all do their job well, each type has its advantages and disadvantages.

Evaporative

Evaporative humidifiers, sometimes called pad humidifiers, hook up to your home’s direct water line to constantly supply water to a humidifier pad. When warm air blows over the pad that has water running down it, water evaporates and moisture releases into the air. Your air system then distributes the humidity throughout your home.

Bypass

Bypass humidifiers take warm air from your home’s HVAC system and pass it through a water tray, where the air picks up moisture before re-entering your home.

This type of whole-house furnace humidifier doesn’t require an extra power supply to push the air through the system. Instead, it uses the furnace blow motor and eliminates the need for a high-voltage power supply.

Bypass humidifiers are relatively inexpensive when compared to other whole-house humidifiers, at $125 to $200. Plus, they reuse water, so they won’t cause your water bill to skyrocket. They’re also much quieter than other models (especially fan-powered humidifiers).

On the downside, they aren’t very energy-efficient and require some sort of drainage system, like a floor drain.

Fan-Powered

Similar to bypass furnace humidifiers, fan-powered humidifiers push humidified air through your home using ductwork. But unlike bypass humidifiers, fan-powered ones use their own fan, resulting in increased water evaporation. These systems can produce a gallon more of humidity per day compared to their bypass counterparts.

Fan-powered whole-house furnace humidifiers don’t require a duct, so they can be placed in more confined areas, like a closet. But they can be noisy, so if you put one in your bedroom it’ll probably keep you up all night.

Steam

Steam humidifiers create humidity by boiling water and releasing steam, which the humidifier pushes through a home’s ventilation system. These systems use electricity, so they can be relatively expensive to operate. Installation is also expensive because these systems are complex and require a local humidifier installer.

Steam humidifiers are one of the most effective whole-house systems and provide a more consistent level of moisture compared to other systems. If you need precise humidity control for health reasons or to protect your prized wood furniture, a steam humidifier is a great option. If you don’t have ductwork, consider a self-contained whole-house humidifier to keep your home’s air moist and healthy. Self-contained humidifiers work independently from furnace systems and use a fan to circulate the humid air.

Self-Contained

If you don’t have ductwork, consider a self-contained whole-house humidifier to keep your home’s air moist and healthy. Self-contained humidifiers work independently from furnace systems and use a fan to circulate the humid air.

Best Whole-House Furnace Humidifier

Fireplace roaring in pretty living room
Photographee.eu / Adobe Stock

The best whole home humidifier will vary depending on the size of your home, where you live, and the needs of your family. When you’re looking for the best whole-house furnace humidifier for your home, consider your budget, your current furnace system, and your personal preferences.

Best Budget-Friendly Whole-House Furnace Humidifier

Bypass humidifiers are the least expensive whole-house furnace humidifiers on the market, at about $300 on average. Other humidifier types can cost upwards of $1,000 with professional installation.

Best Whole-House Furnace Humidifier for Large Homes

If you have a large home, opt for a steam whole-house furnace humidifier. These are the most expensive systems to install and operate, but they can create significantly more humidity than other options.

Best Whole-House Furnace Humidifier for Small Homes

A self-contained whole-house furnace humidifier is the best option for smaller homes, especially those with ductless heating systems. You can install them almost anywhere, including in a closet or under the stairs, to keep them out of the way.

How to Choose a Whole-House Humidifier

To ensure you get the best humidifier for your home, follow these steps:

Assess Your Needs

Start by evaluating your home's indoor humidity levels using a hygrometer in various rooms. Take note of any significant fluctuations or consistent dryness and consider how these humidity levels affect your family’s health and overall comfort. Pay attention to any allergies or respiratory issues aggravated by dry air. These factors will help determine the appropriate moisture level needed throughout your home.

Understand the Types of Humidifiers

Explore the various types of humidifiers available. For example, drum systems operate using a rotating drum to disperse moisture, but they might have specific maintenance and noise considerations. On the other hand, flow-through systems maintain humidity levels with a constant water flow and might differ significantly from other types. Steam humidifiers generate moisture through steam production and can be effective in larger spaces but may have distinct operational features to consider. Do your research on which unit fits your home’s needs.

Calculate Required Capacity

Next, measure the square footage of your home to determine the size of the area you need to humidify. Calculate the required moisture output per day based on the assessment of humidity needs in different areas of your house. Understanding these figures will help you match the humidifier's capacity to your home's specific requirements.

Review Installation Requirements

Consider the compatibility of your HVAC system with the type of humidifier you’re considering, and assess whether modifications or additional equipment are necessary for installation. Evaluate the available space and ensure your home’s ductwork can accommodate the chosen humidifier for seamless integration.

Examine Features and Maintenance Needs

You should also investigate the maintenance needs of different humidifiers. Learn about the frequency of filter changes, cleaning requirements, and water refill needs for each type. Assess the ease of performing maintenance tasks and accessibility for routine upkeep.

Set a Budget

Determine the overall cost of the humidifier, including initial purchase expenses and installation costs. Factor in ongoing operational costs, such as electricity or water usage, and any potential expenses for replacement parts or filters.

Research and Compare Brands and Models

It never hurts to get the scoop on a whole house humidifier from homeowners. Read reviews from users to gain insights into real-life experiences with different humidifier models. Look for warranties and certifications that indicate quality and reliability, helping you make an informed decision based on trusted information.

Seek Professional Advice

Not sure how to install whole house humidifiers? Schedule consultations with whole house humidifier installers near you to gather expert insights into the most suitable options for your home. Get quotes from different service providers for both the unit and potential installation costs to compare and make an informed decision.

Plan for Maintenance

Establish a detailed maintenance schedule that includes regular filter replacements, system checks, and cleaning routines. A proactive maintenance plan will ensure the operation of your chosen whole-house humidifier over time.

Benefits of a Whole House Humidifier

Are whole house humidifiers worth it? If these benefits sound appealing to you, this might be the perfect new addition for your home.

Improved Comfort 

Whole-house humidifiers maintain optimal moisture levels throughout your home, preventing dry air that can lead to discomfort. As an added bonus, balanced humidity levels reduce issues like dry skin, irritated nasal passages, and static electricity. You'll experience a more comfortable living environment when you install a whole house humidifier, especially during dry seasons or in regions with naturally low humidity.

Health Benefits 

Optimal humidity levels are conducive to better respiratory health. Dry air can exacerbate allergies, asthma, and other respiratory conditions. A whole-house humidifier can alleviate these issues by preventing the airways from becoming too dry, reducing the likelihood of respiratory discomfort and allowing for easier breathing.

Energy Efficiency 

Maintaining balanced humidity levels can enhance your home's energy efficiency. Properly humidified air feels warmer, allowing you to lower your thermostat without sacrificing comfort. This can result in energy savings by reducing the workload on your heating system during colder months.

Improved Sleep 

Balanced humidity can contribute to better sleep quality. Dry air can lead to discomfort during sleep, causing issues like dry throat or congestion, which can disrupt sleep patterns. A whole-house humidifier creates a more conducive sleep environment by keeping the air moist, potentially improving your sleep quality and overall restfulness.

Increased Home Value 

Installing a whole-house humidifier can add value to your property. Potential homebuyers often appreciate features that contribute to comfort and health. Having a system in place that maintains ideal humidity levels throughout the house can be an attractive selling point and may increase the resale value of your home.

Frequently Asked Questions

A whole-home humidifier can help alleviate allergies by maintaining optimal humidity levels. Dry air aggravates nasal passages and can worsen allergy symptoms. Properly humidified air can soothe irritated sinuses, reducing the impact of allergens like dust mites and pollen, potentially providing relief for allergy sufferers.

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Learn more about our contributor
Jacqueline DeMarco
Contributing Writer
Jacqueline DeMarco, a Northern California-based freelance writer specializing in sharing home decor and DIY tips, particularly focused on organizing and decorating small spaces. She has contributed to sites like Apartment Therapy, The Everygirl, and Orchard.
Jacqueline DeMarco, a Northern California-based freelance writer specializing in sharing home decor and DIY tips, particularly focused on organizing and decorating small spaces. She has contributed to sites like Apartment Therapy, The Everygirl, and Orchard.
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