Whether you live in a low-humidity area or your skin starts to dry and crack the moment your furnace kicks on in the winter, a whole-house humidifier is the best way to create a comfy microclimate in your home.
To help you find the right HVAC-compatible or console-style humidifier, we tested several in our own homes to evaluate them for ease of use, effectiveness, and coverage area, among other factors.
According to Vinny Lobdell, founder of Intellipure Inc., HVAC-compatible units are convenient and effective, since they connect to your thermostat and add moisture to your entire house instead of just one space.
We’ve found that Aprilaire is the most popular HVAC-compatible brand by far (followed by Honeywell and Nortec/Condair), but our testing has shown that freestanding console units from names like Levoit and Aircare do very well if your home isn’t too big and has great airflow.
Our Top Picks
Best Overall, Console
Aircare Digital Whole-House Pedestal-Style Evaporative Humidifier
Auto shutoff
Refill indicator
Pour-in water tank
Attractive design
May not be effective in large, multi-story homes
While testing the Aircare Whole-House Pedestal-Style Evaporative Humidifier, we found it easy to set up and monitor, with an accurate digital display and simple, intuitive controls. We also liked the attractive housing, which can double as a side table or plant pedestal. Though quite large, it isn't wasted space or an eyesore.
Since this is a console humidifier, it uses a fan to pull water from a tank, which evaporates and then releases into the air. This type of humidifier is powerful enough to circulate moisture through a single-level home or apartment. Digital controls allow you to adjust a desired humidity level and switch between nine fan speeds, and it shuts off automatically when it reaches the target humidity level.
Rather than being hooked up to an HVAC system, this humidifier only requires a standard 120-volt outlet. Simply attach caster wheels, install the float bar, and fill the water tank. This humidifier’s vents are located on the side of the unit, so you’ll want to be sure it’s not placed flush against another piece of furniture or a wall.
The digital display will show an “F” if the water tank needs to be refilled. You don’t need to lug a water tank to a sink to refill it. To do so, open the fill door (where the Aircare plaque is) and insert the funnel before pouring water into the 3.5-gallon tank.
This unit is good for areas up to 2,400 square feet, so it's sufficient for most one- or two-bedroom houses and larger apartments as long as the airflow is good. During testing, we noticed that some parts of our home were not as well humidified as others while using this unit, especially if doors were left closed, so anything you can do to promote air circulating throughout your home will help.
If you need to add moisture to a larger space or multiple floors but don't have HVAC ducts or don't want an HVAC-compatible model, we recommend purchasing an additional pedestal model for the second floor of your home.
Type: Console | Dimensions: 18 x 18 x 27.25 inches | Coverage Area: 2,400 square feet | Tank Capacity: 3.5 gallons
Best Overall, through HVAC
AprilAire 600 Whole-House Humidifier
Includes outdoor sensor to reduce energy use
Adjust humidity automatically
Works with smart thermostats like Nest
Water panel needs to be replaced regularly
Difficult to select specific humidity
Our recommendation for the overall best HVAC-compatible humidifier is the AprilAire 600, because it’s effective, doesn’t require constant monitoring or adjustments, and only needs minimal maintenance each year. This system takes up a remarkably small amount of space on your ductwork and can provide humidity to well-sealed homes up to 5,000 square feet in size (but it works just as well for smaller homes).
This bypass whole-home humidifier uses warm air from your furnace to heat an internal water panel, which produces humidity that’s pushed through your existing ductwork along with warm air throughout the year's colder months.
You can install this type of system yourself, but it requires HVAC and plumbing knowledge (and has an outdoor sensor), so we recommend using a professional. Maintenance can also be DIY or handled by a professional, but it’s fairly simple. It has an indicator light that shows when it’s time to replace the water panel (about once per year).
This system adjusts your humidity automatically based on a level you select, the temperature inside, and the outside temperature and humidity. We would have preferred if you could select a specific humidity, but the system works well enough, and you can connect it to a smart thermostat like a Nest if you want additional control.
Type: Bypass, through HVAC | Dimensions: 10.25 x 15.38 x 15.75 inches | Coverage Area: 5,000 square feet | Tank Capacity: Not applicable
Lots of useful smart features
Large volume water tank
Refilling the tank is easy
Casters for easy movement
Heavy when the tank is full
No low water or dirty filter alerts
If you have a large home with humidity issues that isn't too closed off and has great airflow between spaces, you may not need to invest in an HVAC-compatible unit. This option from Levoit is excellent for homes with bigger footprints (up to 3,000 square feet). We used it primarily in our centrally-located dining area and noticed less dust accumulation and fewer static shocks when shuffling over carpet during the dry winter months.
This model includes a humidity sensor with the option to set it for automatic operation up to 80 percent humidity—perfect if you like to pack your house with moisture-hungry plants—and that it's loaded with great smart features. It was only able to reach a maximum humidity of 71 percent for us during our tests, but that still felt quite comfortable.
We also like the overall design of this freestanding humidifier. Its sterile white design doesn’t fade into the background like our best overall console pick, but the built-in casters let you move it around to find a location that isn’t in the way. The casters are essential because the humidifier is heavy when full, but they really come in handy. We had to move it into the living space during the winter since that's where our fireplace is, and we appreciated having the casters to make the transition easier.
This humidifier has a huge 6-gallon tank, which Levoit says can keep it running for up to three days at a time on the low fan setting. That will vary depending on your home, but we ran it continuously for three months and found that we had to fill the tank every four days. Refilling is easy since it has a lift-off top and a convenient hose and faucet attachment (no need to use distilled water).
We also like that this humidifier has smart home connectivity, with Alexa support for voice commands and a phone app for remote monitoring and control. Smart home integration also allows for custom humidity settings based on whether anyone is home.
We would have preferred if this unit also had features like a low water alert and filter change alert, but we think it’s still a good option for large homes (you just need to pay attention to how long the tank lasts between refills in your home and settle into a schedule like we did.) We kept a close eye on the tank during three months of use and were able to keep it clean with a quick rinse and wipe without any noticeable buildup.
Type: Console | Dimensions: 12.72 x 12.72 x 26.7 inches | Coverage Area: 3,000 square feet | Tank Capacity: 6 gallons
Best Budget
Aircare 836000HB Evaporative Humidifier
Caster wheels
Large water tank
Water refill indicator
Cannot be used as additional tabletop
While we think a big pedestal model is the best option, a portable evaporative console humidifier like this is a budget-friendly solution. We like this model from Aircare because of its large water tank capacity, impressive coverage capabilities, and simple-to-use control panel.
This humidifier is on caster wheels, so you can easily move it around a room or between areas of your home when needed. If your home has poor air circulation, moving it around can help keep the humidity at an ideal level throughout. It also has a digital display that shows the current humidity level, and two dials allow you to adjust the three-speed motor and desired humidity level.
We also like that this model has a water refill and check filter indicator, which helps you understand your humidifier's maintenance needs. The water tank is also easily refilled through the front grate on the unit, so you won’t have to worry about carrying the 6-gallon tank to a sink.
Unlike our best overall console pick, this model cannot be used for additional tabletop storage because the fan is located on the top of the unit. However, we do like that it has a good coverage area—2,300 square feet, just 100 square feet less than our best overall console—for $50 to $75 less.
Type: Console | Dimensions: 21.5 x 13 x 17.75 inches | Coverage Area: 2,300 square feet | Tank Capacity: 6 gallons
Best for Small Homes
Aircare D46 720 Designer Series Evaporative Humidifier
Easy-to-fill dual water tanks
Refill and check filter indicators
Four-speed motor
Distilled water recommended
This evaporative humidifier from Aircare is a great option for apartment or home renters who cannot install a humidifier with their HVAC system and don't have a huge amount of square footage to cover. Aside from its attractive design and minimal floor footprint, we love that this humidifier can add 3.52 gallons of water to your indoor air daily. The four-speed motor makes it easy to adjust the rate at which your home’s air is humidified.
This humidifier has two 1-gallon water tanks, which are easy to refill and reinstall on each side of the unit. Keep in mind that Aircare recommends using distilled water with this humidifier to prevent mineral buildup on the filters.
The digital display incorporates check filter and refill status indicators, so you know exactly how to maintain this humidifier’s long-term performance. Just keep in mind that it has a 1,200-square-foot coverage area, so if you have a larger home, our best overall console model is a better choice.
Type: Console | Dimensions: 26 x 15 x 10 inches | Coverage Area: 1,200 square feet | Tank Capacity: 2 gallons
Best for Hard Water
Honeywell Home TrueEase Large Evaporative Bypass Humidifier
Very quiet operation
Doesn’t require too much maintenance
Flow-through design helps reduce mineral buildup
Humidity accuracy could be more precise
Water pad requires replacement
If you have hard water and don’t have a water softener, our favorite whole-house humidifier is this one from Honeywell. It doesn’t prevent mineral buildup or remove minerals from your water, but the flow-through system can reduce buildup and increase the amount of time you can go between maintenance, cleaning, and replacing the humidifier pad.
We love how well this unit manages indoor humidity. It has a digital control panel that looks and works a lot like a thermostat. It senses both indoor and outdoor humidity (to prevent condensation) and then maintains your desired humidity level by changing outdoor conditions and indoor temperatures.
The control unit isn’t the most accurate, with a potential inaccuracy of plus or minus five percent, but that won’t be an issue in most homes. If you want a more accurate controller, the one included with our overall best through HVAC pick is accurate to within plus or minus three percent.
This bypass humidifier connects to your HVAC system, so you can hire a professional or install it yourself if you’re comfortable with that kind of work. It usually only needs maintenance every six months to a year, but it includes an indicator light that shows when it’s time to replace the humidifier pad, so there’s no confusion or guesswork involved.
Type: Bypass, flow-through, through HVAC | Dimensions: 15 x 17.15 x 10.1 inches | Coverage Area: 20,000 cubic feet | Tank Capacity: Not applicable
Final Verdict
Our best overall whole-house humidifier is the Aircare EP 9 800 Digital Whole-House Pedestal-Style Evaporative Humidifier. It requires no ducting or professional installation but can adjust the humidity levels in most small to medium-sized homes. If you have a larger home, we recommend the AprilAire 600 Whole Home Humidifier, our overall best through HVAC pick, which includes all of the automatic features of our best overall pick, but can humidify 5,000 square feet in a well-sealed home.
How We Picked Whole-Home Humidifiers
We researched and evaluated whole-home humidifiers based on ease of use and installation, coverage area, monitoring and control options, tank capacity, and features like accurate humidistats and smart home connectivity, testing several large console models in our own homes throughout the process.
We also analyzed insights from our survey respondents to consider real-world experience. We found that Aprilaire is the most popular brand, followed by Honeywell and Nortec/Condair.
What to Look for in a Whole-House Humidifier
Coverage Area
Look for a whole-house humidifier designed for the size of your home. Too large or too small, and you may end up with low humidity that damages wooden home features and furniture or high humidity that could even promote mold growth.
The coverage area for both console humidifiers and installed whole-house humidifiers is lessened in older homes (built over 20 years ago) or poorly sealed homes (meaning one with poorly fitted windows and doors) because the environment is not tightly closed, resulting in air loss through micro-cracks and under doorways. If your home is susceptible to drafts or isn't fully insulated, look for a more powerful humidifier model.
Keep in mind that the coverage area of console humidifiers is also relative to your home's style. If you have an open floor plan, a console humidifier like our overall best console pick will easily humidify an entire level of your home, but it may struggle to humidify rooms with closed doors or an entire second floor.
A multi-story homeowner should consider investing in a whole-house humidifier that connects to their central air or using two console humidifiers (one for each floor).
Humidifier Types
Similar to air purifiers, whole-house humidifiers can be divided into two categories or styles: console humidifiers and HVAC-compatible humidifiers.
Console humidifiers like our overall best console pick don't need to be installed (you can leave them in one place or even move them around), while HVAC-compatible humidifiers typically require the assistance of a professional, as they need to be connected to the ductwork in your home (and sometimes directly to your furnace.)
Freestanding console units (portable or pedestal humidifiers) don’t require as much setup but can take up more room in your actual living space. They have a smaller coverage area compared with HVAC options, but they are a great option for renters or homeowners who don't want to splurge on an installed unit (or don’t have the ductwork required for an HVAC-compatible humidifier).
With a console humidifier, you have to monitor and refill the water yourself, so we recommend looking for an option that clearly alerts you when the water level is low and is easy to refill like our best smart pick.
HVAC-compatible humidifiers can be more expensive (especially if you need a pro to connect them to your existing system), but they tend to have a longer lifespan than freestanding units and don’t need daily refills. They connect to your home's central air system and can be further divided into three types: steam, bypass, and fan.
- Steam whole-house humidifiers: These are an effective option for providing consistent coverage in larger homes. However, they can be more expensive since they use more energy and typically require professional installation.
- Bypass whole-house humidifiers: This type is an effective choice for small or average-sized homes. Because they pull air from your furnace, they can save you money on your energy bill over time. They also require little maintenance if properly monitored (other than replacing a water panel yearly), but you may need to install them near a drain because they can create condensation. Our overall best through HVAC pick is a bypass model.
- Fan whole-house humidifiers: These are especially convenient for homes located in hot and arid climates because they don’t pull warm air from your furnace. Like steam humidifiers, they can provide great coverage to larger homes.
Tank Capacity, Wicks, and Water Panels
While tank capacity only applies to console humidifiers, it's important to note that it does not correlate to a humidifier's run time. Just as the coverage area is affected by a poorly sealed home, so is a humidifier's run time, especially if your console humidifier is working in a larger area than its intended coverage.
Humidifier tank capacities range from 2-6 gallons. Our best budget pick has a 6-gallon tank that can be filled from the front of the unit without having to remove it.
While browsing humidifier options, you'll notice that console humidifiers come with a "wick," which acts as a filter to remove minerals from the water before it is circulated in your home's air. The wicks also prevent buildup in a humidifier's water tank and other parts. Wicks should be replaced after regular humidifier use for each season.
Similarly, bypass and fan whole-house humidifiers have water panels that function like wicks. They hold water and remove any hard water properties before turning it into vapor. You should also regularly replace your whole-home humidifier's water panel, especially if your home has hard water. Flow-through models like our best for hard water pick can help reduce mineral buildup, but you still need to perform regular maintenance.
Be sure to check your whole-house humidifier periodically to ensure that it is working properly. Small issues can become big problems if water is not draining properly or if the system has electrical malfunctions. Our overall best through HVAC pick has an indicator light that will illuminate if the unit needs professional maintenance.
One More Thing...
Wondering about how much whole-house humidifiers cost? Price depends largely on the type you choose, and the coverage area. Console units typically cost between $100 and $200, while HVAC-compatible models from $200 to $900 or more. Digital controls, auto turn-on and shutoff settings, and smart home compatibility add to the cost.
Why Trust The Spruce?
Jeremy Laukkonen is an updates writer at The Spruce with over a decade of experience covering products like whole-house water filtration systems, appliances like stackable washers and dryers, and other home goods. Growing up in the Pacific Northwest, he was no stranger to the itchy skin and scratchy throats associated with dried-out winter air, and he sought all sorts of solutions, from boiling a kettle of water on the stove to big humidifiers.
For this story, Laukkonen relied on personal experience and research along with our console humidifier testing insights and HVAC-compatible survey results, looking at factors like coverage, ease of use, and performance to select the best whole-house humidifiers.
Our Experts:
- Vinny Lobdell, founder and past president of Healthway family of brands and Intellipure Inc., is an air-quality expert and global entrepreneur with more than 25 years of indoor-air-quality experience.