What Is The Safest Humidifier – Ultimate Guide 2021

If you are tired of waking up to dry skin, irritated sinuses, or dry air in your home, the safest humidifier can give you some much-needed reprieve.

Humidifiers regulate a dry environment by adding moisture back in the air. Having the right humidity levels in your house prevents skin from drying out. It also helps relieve sinuses congestion symptoms, which could lead to better sleep at night.

What are the Top Safest Humidifiers?

Last update on 2024-07-20 / Affiliate links / Images from Amazon Product Advertising API

The humidifier market is flooded with all sorts of options. The choices available vary depending on how they release moisture into the air. Some are evaporative, while others are ultrasonic. Some are portable, and others can be installed permanently on a wall in your home. As a result, you can find it challenging to select a safe humidifier that best fits your needs.

To help you make the best choice, we have compiled a list of seven safest humidifiers available on the market. These reviews will help you make a well-informed decision, and you will spend less time shopping.


1. Vicks Filter-Free Ultrasonic Visible Cool Mist Humidifier – best small-size ultrasonic humidifier

Vicks Filter-Free Ultrasonic Humidifier. #1 Brand...
  • VICKS FILTER-FREE COOL MIST HUMIDIFIER: This cool mist humidifier won't need replacement filters, and it's 1.2 gallon tank can give up to 30 hours of soothing mist. Vicks cool mist humidifier is quiet, making it great for your bedroom or baby's nursery
  • VICKS HUMIDIFIERS FOR BABIES, KIDS, ADULTS: Humidifiers diffuse moisture into the air, and many women and men find that a humidifier for the bedroom becomes an essential part of a good nights sleep when the air is dry, in allergy season, or when sick
  • COUGH AND CONGESTION RELIEF: When you or your kid has a cold, it can be difficult to sleep through the night. Humidifiers, vaporizers, and steam inhalers provide temporary relief from coughing and congestion, so your rest won't be as disturbed by coughing fits
  • VICKS VAPORIZERS, HUMIDIFIERS AND STEAM INHALERS: Moisture and humidity offer temporary relief from cough and congestion due to colds or allergies. Vicks line of humidifiers and steam inhalers, help you breathe easier wherever you are, from the bedroom to the office
  • HUMIDIFIERS FOR BEDROOMS, DESKS, TABLES: Our humidifiers and vaporizers help you breathe better wherever you are.

Last update on 2024-07-20 / Affiliate links / Images from Amazon Product Advertising API

The Vicks Filter-Free Cool Mist Humidifier is an effective and affordable gadget for infusing necessary moisture to the air and balancing the relative humidity. With its quiet output and compact design, this humidifier is an excellent option for the bedroom.

This unit is lightweight and very portable. You can easily place it on a dresser top or shelf. Just note that you need to pick it up from the base as picking it from the top handle can detach the water reservoir. The reservoir has a clear window that helps you know when a refill is required. The unit has an auto-shutoff when the tank runs dry.

The humidifier is recommended for spaces of up to 250 square feet, making it an excellent option for a baby’s bedroom. It uses ultrasonic technology to quietly restore air even on the highest setting for up to 30 hours. 

Setting up the humidifier is quite easy, and it has uncomplicated controls. These include a central dial that allows you to turn the humidifier to your comfort. Furthermore, it comes with two Vick vapor packs, with which you can add soothing vapors to your mist.

Overall, the Vicks Filter Free Cool Mist Humidifier offers reliable performance, is easy to use, and it offers scent pads for additional freshness in your home. Its easy setup and adjustment make it an excellent option for the price. Keep note, however, that the manufacturer recommends cleaning the tank and the tank cap weekly.


  • Has a quiet output
  • Easy to use 
  • Safe to use around children and pets.


  • Can accumulate bacteria growth

2. Honeywell HCM-350 Germ-Free Cool Mist Humidifier – best germ-free humidifier

Honeywell Cool Moisture Humidifier, Medium Room, 1...
  • CLEANER INVISIBLE MOISTURE – Honeywell Cool Moisture Humidifier effectively brings invisible moisture to your home. It utilizes UV technology and a wicking filter to help treat the water and capture minerals to keep them out of the air for a cleaner mist.
  • EVERYDAY COMFORT – This humidifier for home features evaporative technology that increases and holds the targeted humidity level to optimize moisture in the room. It’s ideal for everyday comfort and year-round relief from dry throat and dry, itchy skin.
  • EASY TO USE – Featuring a large 1.1 gallon, easy-fill, self-standing tank, this cool moisture humidifier provides up to 24 hours of run time. Plus, it’s easy to clean – all parts that touch water can be cleaned in the dishwasher.
  • HUMIDIFIER FOR BEDROOM – As the ideal humidifier for baby, this device has a soft, fan-like sound to add restful noise to any room. Great for an adult or child’s bedroom, the large tank can run overnight, providing consistent soothing moisture.
  • COMPATIBLE DOES NOT MEAN COMPARABLE – For best performance, use only a genuine Honeywell Replacement Wicking Filter A. Compatible humidifier filter replacements are not guaranteed to offer the same performance or efficiency.

Last update on 2024-07-20 / Affiliate links / Images from Amazon Product Advertising API

The Honeywell HCM-350 is a cool-mist humidifier that adds cool moisture to dry air. This helps to improve your breathing comfort, nasal congestion, and dry skin. It is a simple, user-friendly, and powerful option. Moreover, compared to similar humidifiers, it is remarkably quiet.

With a large tank handle, it is easy to transport and hold. The tank is quite durable and extremely easy to fill and clean. Also, the filter is straightforwardly accessible for replacement and cleaning. When the tank runs out, the machine shuts off automatically, and the refill light illuminates. 

This cool-mist humidifier is suitable for spaces as large as 400 square feet. It can humidify a room for up to 24 hours, and it works best for bedrooms and living rooms. Since it is an evaporative humidifier, it blows moisture off a wicking filter, helping it quickly evaporate in the air. Due to this fact, this model cannot over-humidify the air or spread white mineral dust as ultrasonic humidifiers occasionally do.

The key benefit of this humidifier is that it has in-built UV technology. This feature kills 99.9% of bacteria in the water before sending mist in the air. 

When it comes to Honeywell humidifiers, you get unquestionable reliability. You can bet that the Honeywell HCM-350 will serve you well for the long-term.


  • Quiet but powerful
  • Easy to fill and clean


  • The filter needs frequent replacement.

3. Levoit LV600HH Hybrid Ultrasonic humidifier – best for large room essential oils dissipation

LEVOIT Humidifiers for Bedroom Large Room Home, 6L...
  • 𝙃𝙄𝙂𝙃-𝙀𝙁𝙁𝙄𝘾𝙄𝙀𝙉𝘾𝙔, 𝙁𝙊𝙍 𝙒𝙃𝙊𝙇𝙀 𝙃𝙊𝙈𝙀: It provides humidification speeds 4× faster than others, which can quickly cover 753ft² of the area and last up to 50 hours. You can customize the target humidity you need, and feel hands-free with auto mode.
  • 𝙋𝘼𝙏𝙀𝙉𝙏 𝙒𝘼𝙍𝙈 𝙈𝙄𝙎𝙏 𝙏𝙀𝘾𝙃 𝙁𝙊𝙍 𝘽𝙀𝘿𝙍𝙊𝙊𝙈: It raises RH 10% in 20mins, providing greater relief from symptoms caused by dir air. Near-silent noise levels and all lights off help you sleep undisturbed
  • 𝙋𝙀𝙍𝙁𝙀𝘾𝙏 𝙁𝙊𝙍 𝙇𝘼𝙍𝙂𝙀 𝙍𝙊𝙊𝙈𝙎: With a mist output of up to 500 mL/hr, it can easily handle spaces as large as 753 ft² / 70 m². The large 6-liter tank allows you to humidify continuously for up to 50 hours, saving you the trouble of frequent refills
  • 𝘼𝙐𝙏𝙊𝙈𝘼𝙏𝙄𝘾 𝙏𝙐𝙍𝙉 𝙊𝙉 & 𝙊𝙁𝙁: With a built-in sensor, Auto Mode adjusts mist levels according to your settings to maintain a healthy humidity level
  • 𝙃𝙐𝙈𝙄𝘿𝙄𝙏𝙔 𝙐𝙋 𝙏𝙊 𝙔𝙊𝙐: You can customize the ideal humidity percentage for your house plant, baby, or beloved guitar

Last update on 2024-07-20 / Affiliate links / Images from Amazon Product Advertising API

If you need peace when you sleep, the Levoit LV600HH Hybrid Ultrasonic Humidifier is an excellent option. Not only is it quiet, but you can also turn the LED screen off entirely to help you sleep through the night while the humidifier works.

This humidifier is very easy to use. It has an intelligent mode that uses the in-built sensor to keep humidity at the optimal 40-60% range. You do not have to worry when the tank runs out of the water as the device will automatically shut off to protect you and the device.

This Levoit humidifier has a mist output that can easily handle spaces as large as 753 square feet. The large 1.5-gallon tank allows for up to 36 hours of continuous use on the low-mist setting. 

With this device, you can easily adjust settings in the middle of the night without leaving the comfort of your bed as it comes with remote control. It operates with both ultrasonic warm and cool mist and a 360-degree mist nozzle for efficiency.

If you are keen on creating a relaxing atmosphere in your indoor space, you will appreciate the onboard essential oil diffuser. It allows you to add your favorite essential oil to give the room a pure, clean, and fresh-smelling aroma.

All in all, the Levoit LV600HH is very user friendly and exceptionally quiet. It adds a layer of convenience that most humidifiers lack. Even better, the automatic mode allows you to choose the mist level without any interference.


  • It has a visual humidity panel.
  • Option for cool or warm mist.
  • Auto-adjusts humidity level.


  • It’s not that easy to clean

4. Pohl Schmitt Ultrasonic Viral Support Humidifier – best budget-friendly ultrasonic humidifier

Ultrasonic Viral Support Humidifier for Bedrooms,...
  • Whisper-Quiet Operation: This humidifier operates quietly, allowing you to sleep or work undisturbed without any noisy distractions, ensuring a peaceful atmosphere in your bedroom.
  • Adjustable Mist: The mist output can be easily adjusted to your desired level, allowing you to customize the humidity in your room based on your preference and comfort needs.
  • Long Operating Time: With a capacity of 16 hours of continuous operation, this humidifier can provide extended relief from dry air, ensuring a comfortable environment throughout the night or during long working hours.
  • Nightlight Feature: The built-in nightlight creates a soothing ambiance in your bedroom, providing a gentle glow that can help create a relaxing atmosphere, aiding in a better night's sleep.
  • Auto-Shut Off and Filter Included: For convenience and safety, the humidifier is equipped with an auto-shut off feature that automatically turns off the device when the water level is low. Additionally, a filter is included to help purify the water ensuring a clean and healthy mist output.

Last update on 2024-07-20 / Affiliate links / Images from Amazon Product Advertising API

This ultrasonic humidifier is another top choice for its price. You get a product that is stylish and user-friendly. It is also pleasant for nighttime use, thanks to its calming blue glow and whisper-quiet operation. 

With a 1.5-liter tank, the Pohl Schmitt Ultrasonic humidifier is ideal for medium-sized rooms. However, it offers up to 16 hours of continuous operation. This pales in comparison to the 36 hours you get from the Levoit LV600HH

The Pohl Schmitt Ultrasonic humidifier scores highly in the user-friendly category. It features convenience functions like automatic shut-off and a tank-refill indicator. It also offers manual controls for the speed, direction, humidity levels, and the nightlight. 

Overall this safest humidifier is a great option. It offers commendable performance without being overly pricey. Furthermore, the unique design makes it easy to place, clean, and carry.


  • Nightlight
  • Easy to operate
  • Quite cheap


  • Relatively modest continuous operation time

5. Levoit LV450CH Cool Mist Humidifier – best budget-friendly large-room humidifier

Last update on 2024-07-20 / Affiliate links / Images from Amazon Product Advertising API

The Levoit LV450CH is a reliable option for shoppers looking for a medium-sized humidifier with a simple design and basic features but reliable performance. 

This unit is not as versatile as its counterpart, the Levoit LV600HH. It just has a single button that changes color to indicate the different power levels. Not to worry, however, as it still gets the job done. You will also get to enjoy the signature Levoit whisper-quiet operation.

The Levoit LV450CH has a high capacity of 1.1gallon water tank. With this capacity, it can continuously operate for up to 40 hours on the lowest mist setting. On higher configurations, this unit easily humidifies offices, nurseries, and other large rooms. Meanwhile, the one-touch control allows you to cycle between 3 mist levels with color-coded settings quickly.

This humidifier’s key safety feature is the automatic shut-off. The function cuts the power when the tank is empty or removed from its base. 

Overall, the Levoit LV450CH is a decent, safe humidifier. It is easy to use and quite affordable to buy. 


  • It is reasonably priced
  • Has the option of adding essential oils for a lovely fragrance
  • Operates for up to 40 hours without needing a refill


  • Lacks smart features

6. Homasy Cool Mist Humidifier Diffuser – Quietest large-room safest dehumidifier

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Are you looking for a humidifier that has everything to humidify your large bedroom? The Homasy Cool Mist Humidifier comes with all the useful features to ensure the best environment for easy breathing. It is also a very user-friendly appliance.  

As a whisper-quiet humidifier, this unit is ideal for the bedroom. It also features a sleep-friendly light that lulls you to sleep. Moreover, you can add your most preferred essential oil in the oil diffuser to make the night more restful. 

You can utilize the Homasy cool mist humidifier for large rooms of up to 538 square feet. The Powerful mist output delivers the moisture you want reliably. Meanwhile, the massive 2.5L tank ensures up to 30 hours of continuous operation. When the tank runs out, the unit with shut off automatically. 

The Homasy cool mist humidifier is very user-friendly. It offers three levels of mist output. With the sensitive touch button, you can toggle through the settings with ease. 

Homasy is a reputable brand in the humidifier market. So, if you’re looking to humidify your bedroom safely, this unit is a great choice. 


  • Easy to clean and little maintenance required.
  • Extremely energy efficient.
  • No operating noise


  • Bacterial contamination may occur
  • Mineral dust accumulates

7. JZK Mini Portable Personal Cool Mist Air Humidifier – Best travel humidifier

JZK Mini Portable Personal Cool Mist Air...
  • Refreshes - Stream of cool or warm water mist freshens the air to ensure your ability to breathe comfortably!
  • Easy to Use - Versatile plug in choices with USB Cable & Adapter will provide you flexible charging options.
  • Flexibility - Humidifiers are the perfect for anyone with a baby, kids, new house or just to show them how much you care.
  • Lifetime Guarantee - If anything ever goes wrong with your humidifier, we'll take great care of you right away, eliminating all risk to you because you have nothing to lose!
  • A Typical Customer - “A Must Have...BEST Humidifier On Amazon!!” - Matt S. (Tehachapi, CA)

Last update on 2024-07-20 / Affiliate links / Images from Amazon Product Advertising API

If you’re a frequent traveler, this mini humidifier is an excellent option for adding moisture back into the air while on the go. The portable size means you can bring it with you anywhere. Moreover, it supports both USB and wall-adaptor power, which makes it very versatile. 

This device produces a stream of cool or warm mist that freshens the air to ensure you breathe comfortably. It offers continuous operation for up to eight hours. As a mini humidifier, however, it only spreads moisture across a short distance. Therefore, you get the best results when the humidifier is a foot or two away from you. 

To use the JZK personal humidifier, you only need to screw off the top, add water to the fill line, plug it in then press start. You can choose between a cool or warm mist, depending on your preference at the time. 

The JZK mini is among the best mini dehumidifiers on the market. It is small, affordable, and convenient. Additionally, JZK offers a lifetime guarantee on all their product, including this device. You can rest assured that they will help in case of any defects. 


  • Quiet
  • USB plug makes it convenient for connecting to a wall plug or a computer.
  • Easy to clean


  • The vapor only spreads for a short distance.

The Best Safest Humidifier  – Editor’s Choice

All the safe humidifiers we have listed above are exceptionally great in their own right. If we were to choose one, however, we would go with the Honeywell HCM-350 Germ-Free Cool Mist Humidifier. It offers excellent humidification without compromising on portability. It is also effortless to use, and its auto shut-off function is reliable. Best of all, it is the only unit with an air purifier for protection from harmful airborne germs. The JZK Mini Portable Personal Cool Mist Air Humidifier deservingly comes in second place. It does not offer much in terms of performance. Nevertheless, its portability and versatility make it highly convenient. It is also affordable and comes in eight different colors. If you are all alone in a room, having the JZK Mini next to you will give you all the humidification you need. 

Frequently Asked Questions

Now that you know the safest humidifiers in the market, you are a step closer to acquiring the right humidifier for your space. However, this information forms only one piece of the puzzle. It is also helpful to understand how humidifiers work, the types that are best for you, the practices for proper use, and so on. 

Safest humidifier humidity chart

Let us look at some of the questions you might have when shopping for your safest dehumidifier.

  • What is the ideal level of humidity to maintain?

The right humidity level is between 45 and 50 percent. Indoor air with a moisture content of above 50 percent creates an environment for mold, mites, and bacteria to thrive. On the other hand, humidity measuring below 30 percent reduces room temperature and promotes the spread of flu viruses. 

If your home suffers from high humidity, you need a good dehumidifier to achieve the right moisture level. Meanwhile, if low humidity is your problem, a humidifier is the way to go.

Read also: What Should Humidity Be In A House With Air Conditioning?

  • What is the right size for a humidifier?

Humidifier sizes correspond to their moisture output in gallons per day. To ensure you get the best humidifier, identify where you intend to use it and refer to the table below.

Typically, small humidifiers are best for small rooms of up to 300 square feet. Medium ones are good for room sizes of 300 – 499 square feet and larger ones for rooms from 500 to 999 square feet. Most manufacturers indicate the recommended room size for their units on the packaging.

You may also like: Best Humidifiers For 1000 Square Feet

If you need to humidify all the rooms in your home at the same time, you can consider a central humidification system.

  • Are humidifiers noisy?

You can expect most humidifiers to make at least a little noise. However, ultrasonic humidifiers are, by far, the quietest humidifiers because they do not have fans to blow the mist into the air. The fan is usually the noisiest part of a humidifier. 

If you are buying a safe humidifier for your bedroom or office, ask about its noise output. If possible, request that the unit be switched on and judge for yourself. Ideally, the operating noise output should be less than 30 Decibels.

  • Do humidifiers need maintenance? 

Humidifiers, like all electromechanical appliances, require occasional maintenance. Fortunately, the only maintenance activity you will be doing is cleaning your unit. 

For the most part, air humidifiers are easy to clean, provided you take your time to clean it. It is recommended to at least clean the humidifier weekly. You can do it using household cleaning products or follow the manufacturer’s recommendations.

Just make sure the water does not sit inside the unit for too long. You risk making the air quality even worse than before as bacteria can grow.

Interesting read: 10 Best Easy To Clean Humidifier Reviews

Wrap Up

Choosing the safest humidifier that best serves your needs can be quite challenging. You need to buy one that can fit all aspects of your lifestyle. We believe that, by considering our list of the top units and answers to frequently asked questions, you will be able to choose wisely. 

You may also like:

Best Humidifier with UV Light

Best Humidifiers for Hard Water

Best Humidifiers Without Filters

Best Humidifier for Dry Nose


Happy hunting!    


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Melanie Mavery is an aspiring HVAC technician who is fascinated by the trends and opportunities in the HVAC industry. She spends most of her day writing content on home improvement topics and outreaching to prospects.  She's always looking for ways to support HVACs!