Buyers Guide & Information

Best Steam Humidifiers Reviewed

Our reviews cover the top rated brands for healthy home air.

Are you tired of the dry air causing chapped lips, itching, rough hair, and dry skin? What you need then is a steam humidifier. Steam humidifiers create steam mist into the air by boiling water, thereby improving the air quality in your home and negating the discomforts caused by dry air.

However, finding the best steam humidifier can be overwhelming due to the abundance of options on offer. Read on through our best steam humidifiers reviews to know which unit best fits your home to help you choose.

Quick Guide – Our Top Picks


Best Furnace Model

Aprilaire 800
Aprilaire 800

Our Top Pick

Honeywell HM750A1000
Honeywell HM750A1000

Best for Small Homes

Emerson HSP2000
Emerson HSP2000

Why Use A Whole House Steam Humidifier

Reliable Humidity Levels

With monitored and properly regulated humidity, your indoors can preserve persistent air quality and temperature. If you buy and install a whole house steam humidifier, it can safeguard your home’s overall humidity levels and healthiness.

Hygienic Atmospheric Steam

Though many humidifiers use different methods to monitor air quality and atmospheric steam generation, whole house steam humidifiers are particularly designed to use central facility steam to boil deionized water.

This way, these steam humidifiers provide pure and hygienic atmospheric steam favorable to living conditions.

Low Energy Consumption

A whole house steam humidifier provides a cost-efficient and simple method to ensure minimal power consumption. Since their core function relies on the facility boiler steam, they don’t use as much electricity as other humidifiers.

Improved Air Quality

Most Americans spend 90 percent of their time indoors, and the relative humidity for indoors typically range between 30 to 50%. Failing to meet these levels can cause various health hazards.

With steam humidifiers, you get a clean bout of humidity free from all bacteria and other pathogens – leading to better air quality in your house.

Steam Humidifiers Compared

ModelRoom CoverageDaily Humidity OutputPrice
Honeywell HM750A1000 Electrode Steam Humidifier6000 sq ft11/22 gal/dayCheck Amazon
Aprilaire 800 Whole Home Steam Humidifier6200 sq ft34.6 gal/dayCheck Sylvane

Check Amazon

Emerson HSP2000 Whole House Steam Humidifier1400 sq ft13 gal/dayCheck Amazon
Vornado Element A2 Air + Steam Humidifier1000 sq ft2 gal/dayCheck Amazon
BONECO – Digital Steam Humidifier S450860 sq ft3.5 gal/dayCheck Sylvane

Check Amazon

Vicks Warm Steam Vaporizer400 sq ft1.5 gal/dayCheck Amazon

Buying Guide: Choosing A Quality Steam Humidifier

Heating Technology

There’re two main kinds of cool mist steam humidifiers: evaporative (vaporizer) and ultrasonic.

Filtered or evaporative steam humidifiers remove minerals from the water and release moisture into the room’s air.

Whereas, filter-free or ultrasonic humidifiers provide visible mist; therefore, it is recommended to use them with demineralization cartridges to avoid white dust.

Coverage Area

Do you know the perimeters of your room? It’s important to know the size of the room where you’ll use your steam humidifier? Buying the correct steam humidifier will make sure you get what you desired.

Most units available have a coverage area of 250 to 1000 square feet. However, some of the best-rated steam humidifiers can go up to 62000 square feet.

Warm Mist Vs. Cool Mist

Choosing between a warm or cool mist can be tricky as there’s not much difference between the two. Both offer similar benefits, so it’s a matter of personal choice.

Warm mist units often work with liquid inhalants to comfort and relieve cough, whereas cool mist steam humidifiers are preferable around young children.

Safety & Energy Efficiency

Steam humidifiers can allow you to save considerably on your utility bills. While some humidifiers provide little safety and energy efficiency, others like ultrasound are more efficient with energy.

In short, not all steam humidifiers provide the same energy efficiency capacity, so choose wisely.

Ease Of Setup, Use & Maintenance

  • Ease Of Cleaning
    It’s essential to clean your steam humidifier regularly to prevent the rapid increase of bacteria and other pathogens; you don’t want the air to be impure.
  • Ease Of Setup And Use
    No matter whether it’s a console or tabletop steam humidifier, it should always be easy to install and move as well. Ideally, it can fit under your bathroom faucet, or its tank should be easy to remove for a refill.

Extra Features

While these are your standard steam humidifier features, some unique and extra features can set your steam humidifier slightly higher. When buying, consider these additional features like water tank capacity, therapeutic aroma, overflow protection, automatic operation, humidistat, timer, remote control, etc.


Steam humidifiers have different prices, but most of them are generally affordable. For example, most warm mist or cool mist steam humidifiers are available at $100 or less.

However, large steam humidifiers with advanced features and state of the art settings will cost you more than $200.


Most of the steam humidifiers provide an adequate warranty on the products. It can vary from 3 years limited warranty to 5 years full-time warranty.

When buying a steam humidifier, make sure to check its warranty, especially if you’re purchasing some expensive steam humidifier.

6 Best Steam Humidifiers Reviewed

1. Honeywell HM750A1000 Electrode Steam Humidifier

Our Top Pick
Room Coverage6000 square feet
Daily Humidity Output11/22 gallons per day
Daily Humidity Output24 hours

Do you want to humidify your house with a high-end specialized system than your regular in duct humidifier? The Honeywell HM750A1000 electrode steam humidifier might be the ideal option.

According to our performance reviews, this is the best steam humidifier for HVAC systems and the top pick for our best steam humidifier reviews.

The Honeywell HM750A1000 is the best whole house steam humidifier designed with the best quality materials to be ducted into your house.

It features a dual voltage system. This means you can get a respectable output of 11 and 22 gallons per day if you set it for 120v and 240v. It can easily exceed the outcome of any fan-powered unit without wasting water.

Also, it is equipped with the best HVAC steam humidifier system that ensures you are safe from all unwanted bacteria that pollutes the air.

Complete with an automated digital ‘humidistat’ – you only need to add two extra wires, and the humidistat will automatically call for fan whenever there’s humidity.

Plus, it also provides you with an informational display so that you know the status of your steam humidifier, and when to change its steam cylinder.


  • Efficient steam humidification
  • The accurate digital humidistat control system
  • User-friendly setup
  • 5-year warranty
  • flexible mounting choices


  • Tedious installation process
  • Too many wirings

2. Aprilaire 800 Whole Home Steam Humidifier

 Best Furnace Steam Humidifier
Room Coverage6200 square feet
Daily Humidity Output34.6 gallons per day
Daily Humidity Output24 hours

If you’ve got a large house and are looking for the best steam humidifier for a furnace, your hunt stops at Aprilaire 800 steam humidifier.

Aprilaire is producing some of the world’s best furnace steam humidifiers since 1954. The latest edition in Aprilaire steam humidifiers is Aprilaire 800, which is best suited for homes that experience mild winters.

This humidifier steamer has a full coverage area up to 6200 square feet in tightly constructed homes, making it ideal for houses experiencing dry and winter air. Plus, the six output levels of the Aprilaire 800 can add between 11.5 and 34.6 gallons of moisture into the air of your house per day.

One of the prominent features of this humidifier is its flexibility to work with hard, soft, and distilled water without filtering. It has an electrode technology that uses impurities in the water to boost the transfer of electricity.

Moreover, it has an automatic humidifier with dual sensors to check and monitor the humidity levels both inside and outside of your home to ensure optimum moisture levels throughout the house.

All these impressive features make Aprilaire 800 the best steam humidifier for furnace use.


  • Efficient steam humidification
  • Precise digital control
  • Easy to use
  • Ideal for large-sized houses
  • 5-year warranty


  • Expensive due to the large coverage area
  • Replaceable canisters increase the cost

3. Emerson HSP2000 Whole House Steam Humidifier

 Best Steam Humidifier For Small Homes
Room Coverage1400 square feet
Daily Humidity Output13 gallons per day
Daily Humidity Output24 hours

If you’re looking for the best steam humidifier for small homes, this Emerson HSP2000 fits the bill for homes measuring up to 1400 square feet. It’s a 120 volt and 1500 watts steam humidifier with an output of up to 13 gallons per day, so dry air in the home is never a concern.

Emerson HSP2000 whole house humidifier is made of stainless steel to ensure durability and resistance to rust. And you can mount this steam humidifier on your furnace in three ways, with its flexible duct configuration as fitting is never an issue.

This energy-efficient steam humidifier features the best and most accurate humidistat that tailors the output level the way you want for the ideal indoor condition.

An added feature you get with this whole house steam humidifier is that you won’t have to clean it by yourself; the automatic flusher will do it for you.

Some other features of this fantastic steam humidifier for small homes include fan control relay, saddle valve, mounting frame, blower’s safety switch, and water filter.


  • Long-lasting metal materials
  • Auto-flush timer
  • Extremely quiet operation
  • Little maintenance required
  • Easy to use
  • 2-year warranty


  • Difficult to clean
  • May require professional installation

4. Vornado Element A2 Air + Steam Humidifier

 Best Warm & Cool Steam Humidifier
Room Coverage1000 square feet
Daily Humidity Output2 gallons per day
Daily Humidity Output24 hours

We can tell you confidently Vornado Element A2 is the best warm and cool steam humidifier with a delivery capacity of up to 1000 square feet from our best steam humidifier reviews.

It has an automatic humidistat that keeps the indoor properly humidified with a 30 to 70% output.

Plus, this steam humidifier has an increased output with its two-tank system that provides up to 4 gallons of large tank output, adequate to enjoy uninterrupted warm mist air for complete 24 hours until the next refill.

Its auto-refill notification promptly informs you when the water runs out from your steam humidifier so that you can add water.

It also comes with 3 air-assisted steam settings like warm, hot, or cool to make your entire room humidified. All you need to do is pick the steam that best suits you and your family and experience the customized steam.

One thing that separates Vornado Element A2 steam humidifier from others is its aromatherapy ready feature. This means you’ll enjoy steam air with a little diffusion of essential oils into your home atmosphere.


  • Myriad control panel options
  • Easy to fill
  • Aromatherapy Ready
  • 5-year warranty


  • Noisy at the high setting
  • A bit bright display

5. BONECO – Digital Steam Humidifier S450

 Best Value For a Single Room
Room Coverage860 square feet
Daily Humidity Output3.5 gallons per day
Daily Humidity Output24 hours

Finding the right steam humidifier can be hard, especially if you’re looking for one that is adequate for a single room. However, your search stops with BONECO s450 that provides you the best value for a single room with a capacity of 860 square feet.

With a humidity output of up to 3.5 gallons per day, the reservoir delivers continuous steam round the clock, relieving you from dry nasal path and sinuses and ensuring the air isn’t excessively cold.

Most warm mist steam humidifiers release hot mist, BONECO s450 delivers child-friendly mist, thanks to hand-warm vapor air output that produces clear warm-mist. You can now enjoy the perfect indoor environment that you dreamed of with your family with this warm steam humidifier.

This steam humidifier hosts many intelligent features like auto mist technology and Econ Mode that ensure optimal output levels with simple ecological operations.

It has a state of the art digital display that performs several functions including surface touch monitor and an auto light dimmer to help darken the room during sleep. And with the Auto-Cleaning Mode of this steam humidifier, you can let go of the cleaning worries.


  • User-friendly control panel
  • Ideal for large rooms
  • Bacteria & mineral-free humidification
  • 3-year warranty
  • Clear Mist Technology & Auto Mode


  • Large for small rooms

6. Vicks Warm Steam Vaporizer

 Best Steam Vaporizer Humidifier
Room Coverage400 square feet
Daily Humidity Output1.5 gallons per day
Daily Humidity Output24 hours

Whether you’re looking for the best steam humidifier for bedroom or best room steam humidifier, Vicks warm mist will do the trick for you.

With an adequate 1.5-gallon water capacity, this steam humidifier can easily hold enough water to run continuously for 24 hours. The water in a gallon is perfectly heated to eliminate 95 percent of the bacteria, so breathing in unsterilized mist should be least of your concerns.

In our best steam humidifier review, we can tell you that it’s one of the best warm steam humidifiers in the market.  Not only does Vicks help you relieve from dry nasal, sinuses, congestion, and coughing but dry lips as well. With Vicks warm steam humidifier, you can breathe and sleep well.

Moreover, it allows you to add Vicks VapoSteam to the medicine cup of your warm mist vaporizer. This added feature turns Vicks into the best steam vaporizer humidifier for people suffering from cold.

You can also add your favorite essential oils into the cup to add your desired fragrance to the indoors of your house.

This humidifier provides you with two output settings to choose from according to the humidity level in your house. Plus, there’s an auto shut off that stops the machine when the water tank gets empty.


  • Easy to fill
  • Low cost
  • Two settings
  • 3 year limited warranty
  • Compact in size


  • Filler cap gasket is missing
  • Tiny fill hole

How Steam Humidifiers Work

The steam humidifier analyzes the humidity level through a humidistat. Once it senses that the air moisture levels have dropped below a certain point, an immediate signal is passed to the steam humidifier to increase the relative humidity level by drawing in moisture into the house.

Steam humidifier heats water and converts into steam, which is dispersed with the help of a furnace.

The difference between a steam humidifier and others lies in their operation.  For instance, a steam humidifier boils water in a tank and releases steam. However, in the impeller humidifier, a rotating disc throws out water at a diffuser, which breaks it into mist and is released in the house.

Console Vs. Furnace Humidifiers Models

Console humidifiers are simply plugged and play units. However, furnace humidifier models work in connection with your HVAC system to perform its operations.

Comparing Steam Vs. Flow-Through Humidifiers

Steam Humidifiers

The steam humidifier utilizes an organic heating component to boil water in the tank. When it converts into steam, it uses a blower to release it in the home.


  • Automatic air moisture control system
  • Little to no maintenance
  • Easy setup and installation
  • Improved air quality


  • Little expensive
  • Growth of mold and mildew
  • May hide your HVAC air leaks

Flow-Through Humidifiers

Flow-through humidifiers utilize freshwater that flows through the system using an evaporator pad to generate relative humidity.


  • Efficient operating control system
  • Low maintenance required
  • Affordable
  • Easy to install


  • An adequate amount of water waste
  • airflow issues

Care, Maintenance & Troubleshooting Guide

How To Clean A Steam Humidifier

Follow these maintenance and care tips to keep your humidifier working:

  1. Make sure humidistat is turned off so that there’s no risk of electric shock
  2. Drain the water reservoir completely
  3. Let the unit cool first before you remove its lid
  4. Remove the overflow pan, if required, try loosening the mounting screw
  5. Remove the drain tube, and clean the deposits clogging in there.
  6. Time to remove the overflow tank. Start cleaning lime deposits that you find with the help of one-third solution of water and vinegar or Lime Away
  7. Clean metal water discharge and water supply tubes
  8. Reassemble the water tank, make sure to install O-rings properly
  9. In case service interval calls for it, change water filter
  10. Once finished, turn it on and reset your humidistat to your desired humidity level.
How To Fix A Humidifier That Doesn’t Steam

Whether there’s a puddle of water under your steam humidifier or no steam comes out, knowing how to fix your steam humidifier proves handy and can save you some extra dollars.

Follow these simple steps to know how you can fix a humidifier that doesn’t steam:

  1. Unplug your steam humidifier
  2. Now, drain the water
  3. Take your screw to unscrew the two tiny screws on your steam humidifier
  4. Remove the cap
  5. Start chipping the mineral deposits you see in the heating elements
  6. Replace the cap when done cleaning
  7. Now, fill your water tank and plug it in again

People Also Ask (FAQ)

Is A Steam Humidifier Safe To Use Around Children?

Yes, a steam humidifier is safe for your children as it provides them comfort in the dry winter season.

But make sure to put it in an area where your child won’t reach and trip over its cord or even spill the water.

Do I Need A Professional To Install Furnace Steam Humidifiers?

Most of the steam humidifiers can be easily installed with easy to setup procedure.

However, with furnace steam humidifiers, it’s better to let the professionals do the installation for efficient performance.

Where Can I Find Steps On How To Install An Aprilaire Steam Humidifier?

You can check this Aprilaire Steam Humidifier installation video on YouTube or follow this humidifier install guide by Aprilaire.

How Long On Average Should A Humidifier Run Before Reaching Optimal Humidity?

Most steam humidifiers run continuously up to 24 hours before they reach optimal humidity and need to be refilled.

Why Are Steam Humidifiers So Expensive?

Steam humidifiers use electric probes to create steam, which is dispersed in your home through ductwork. The cost of this type of humidifier becomes expensive when you’ll install and run it.

Where Is A Good Place To Buy These Units?

You can buy a good steam humidifier at your nearby electronics store, but if you’re interested in purchasing a good quality steam humidifier at an affordable price, check out Amazon and their awesome deals.


Now you know all about the best steam humidifiers in the market. If you’re still confused with which model to go for, I’d recommend you go with the Honeywell HM750A1000 electrode steam humidifier.

With a dual output mode, automatic humidifying ability, and excellent performance, it is the best whole house & HVAC steam humidifier available.