Best Pureguardian Ultrasonic Humidifiers: Top Picks, Reviews & Guide

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Shopping for PureGuardian Humidifiers? You’ve come to the right place.

If you are looking for a humidifier, you already know the perils of dry air and its rather unpleasant effects on your eyes, throat, and skin.

A humidifier not only alleviates these problems but also helps with cold symptoms and seasonal allergies.

While many manufacturers claim their products offer all these services and features, a name that has surfaced as a continuously trustworthy and consistent brand for its products’ outstanding quality and peak performance is Guardian Technologies.

The company’s line of PureGuardian ultrasonic humidifiers aims to provide a better and healthier environment.

Other products in the portfolio include air purifiers, sanitizers, oil diffusers, and filters. 

Our Top 3 Picks

What's In This Buying Guide

Table of Contents

In this article, we review some of the best Pureguardian ultrasonic humidifiers and list their pros and cons.

We discuss why PureGuardian humidifiers are better than others. We also go over the factors you need to look out for when choosing a PureGuardian humidifier.

Hopefully, our guide can help you find the ideal humidifier.

Best PureGuardian Humidifiers

pureguardian h8000b review
  • Product
    PureGuardian H8000B

  • Award
    Best Overall

  • Tank Capacity
    2 gallons

  • Run Time
    120 hours

  • Smart Mist Sensor
    Yes

  • Coverage Area
    500 sq. ft.

  • Dual Mist Option
    Yes

  • Warranty
    3-year limited warranty

pureguardian h4810 review
  • Product
    PureGuardian H940AR

  • Award
    Best for Small Space

  • Tank Capacity
    0.5 gallon

  • Run Time
    30 hours

  • Smart Mist Sensor
    No

  • Coverage Area
    350 sq. Ft.

  • Dual Mist Option
    No

  • Warranty
    1 year limited warranty

pureguardian h4810 review
  • Product
    PureGuardian H5175W

  • Award
    Large-Capacity Humidifier

  • Tank Capacity
    2 gallons

  • Run Time
    120 hours

  • Smart Mist Sensor
    No

  • Coverage Area
    560 sq. ft.

  • Dual Mist Option
    No

  • Warranty
    3-year limited warranty

pureguardian h8000b review
  • Product
    RH3200BCA Ultrasonic Cool Mist Humidifier

  • Award
    Space-Saving Design

  • Tank Capacity
    1.5 gallons

  • Run Time
    100 hours

  • Smart Mist Sensor
    No

  • Coverage Area
    440 sq. ft.

  • Dual Mist Option
    No

  • Warranty
    90-day limited warranty

pureguardian humidifier review
  • Product
    PureGuardian H910BL

  • Award
    Best for Nurseries

  • Tank Capacity
    0.21 gallons

  • Run Time
    14 hours

  • Smart Mist Sensor
    No

  • Coverage Area
    210 sq. ft.

  • Dual Mist Option
    No

  • Warranty
    1-year limited warranty

#1

Best Overall

The PureGuardian H8000B is an ideal choice for a large space of up to 500 square feet. It features a 2-gallon tank and allows you to switch between cool and warm mist. It also makes use of extension wands to ensure uniform mist throughout the room.

PROS

CONS

Features

Our Review

An effective choice for large working or living spaces, the PureGuardian H8000B boasts a 2-Gallon water capacity that allows for a run time of up to 120 hours.

This ultrasonic humidifier provides 2 mist options – cool and warm mist. And the extended reach wand disperses even mist throughout the room. 

You can also set a humidity level that suits your needs. The smart mist sensor will then monitor the humidity and automatically adjust the output to maintain the level you set. The timer is also a convenient addition.

There’s a digital display interface on the front that you can use with the touch of your fingers.

The H8000B also has 3 fan speed settings and optional night light.

Editor's Rating
4.7/5

#2

Best for Small Spaces

The PureGuardian H940AR is a tabletop unit, and like most ultrasonic humidifiers, it doesn’t create any loud noise. It functions quietly and is ideal for bedrooms or offices up to 350 sq. ft.

Its ultrasonic technology creates a stream of mist almost silently that allows comfort and combats dry air. You can further improve the room’s atmosphere by adding a few drops of your favorite essential oil to the aroma tray.

PROS

CONS

Features

Our Review

This 30-hour ultrasonic cool mist humidifier is the solution to all your dry air problems. Given its 0.5-gallon, it is ideal for small rooms.

The PureGuardian H940AR features Silver CleanTM Protection that prevents the surface of your tank from being used as a breeding ground for mold or mildew – a problem common in humidifiers.

With its ultrasonic technology, the H940AR diffuses a soothing cool mist into the surrounding air. This, along with its ultra-quiet functioning, creates a perfect environment for work or sleep.

When the water level drops below a certain threshold, the indicator light turns on automatically, notifying you that the tank needs refilling. It has a night light, too, so you can even keep it in your children’s bedroom.

Another great feature of the H940AR is its aromatherapy tray. Simply pour in your favorite essential oils, and the humidifier will create a calming and relaxing environment in the room.

All in all, this PureGuardian humidifier is best for people with allergies and those who tend to catch a cold more easily or suffer from the perils of dry skin, nose, and eyes.

Editor's Rating
4.8/5

#3

Large Capacity

The PureGuardian H5175W has a 2-gallon capacity and is suitable for large spaces of up to 560 square feet. It creates quite a comfortable environment as it has an essential oil pad and an aromatherapy tray. It also doesn’t demand a lot of maintenance. 

PROS

CONS

Features

Our Review

The PureGuardian H5175W features a 2-gallon tank and is ideal for combatting dry air problems in big rooms and spaces.

The H5175W uses extension wands to disperse and diffuse an even mist in the room, thus maintaining a steady humidity level.

As is standard in all Pureguardian ultrasonic humidifiers, this one is also treated with Silver Clean Technology to prevent mold or mildew growth on the water tank surface.

This PureGuardian humidifier also does an impeccable job of cutting down any additional costs after purchasing the device. It doesn’t require any filters, wicks, or evaporating pads.

Additional features include an optional nightlight and an indicator light that turns on when the water level in it is critically low so that you can refill it in time.

Editor's Rating
0/5

The Ultrasonic RH3200BCA has a towering design with a height of 23.3 inches. It takes minimal space and looks rather stylish standing in the corner of the room.

It has 3-speed settings and a rotating nozzle that evenly distributes mist in an area of 440 sq. ft. It also has an auto shut-off feature.

PROS

CONS

Features

Our Review

The PureGuardian Ultrasonic RH3200BCA is primarily designed for small to medium-sized rooms of up to 440 sq. ft.

Like other PureGuardian humidifiers, the inside of the water tank of the RH3200BCA is coated with silver. This inhibits unwanted growth of mold, mildew, or any bacteria that may lead to contamination.

The unit is divided into two sections at the top. One side features the cool mist nozzle outlet that allows multi-dimensional cool mist dispersion.

The other side has buttons that work with a slight touch of the finger. This allows easy and convenient control of the unit. It also comes with a 12-hour timer and 3-speed settings.

The PureGuardian Ultrasonic RH3200BCA humidifier is also designed with a few handy features to protect the unit. For instance, the blinking indicator lights up when the water level is critically low. Similarly, when it completely runs out of water, the purifier turns off automatically.

The RH3200BCA is also very easy to use and maintain.

Editor's Rating
5/5

#5

Best for Nurseries

Need a humidifier for your kids’ room? Check out the PureGuardian H910BL. It is ultra-quiet so that your baby doesn’t wake up because of the noise and is easy to use and maintain.

The H910BL comes with adjustable mist levels and a flexible mist nozzle that allows you to further control how it spreads mist. With a 0.21-gallon tank, it is best suited for rooms up to 210 sq. ft.

PROS

CONS

Features

Our Review

The 10-hour Ultrasonic Cool Mist Humidifier can cater to all your dry air problems at home. Like other PureGuardian ultrasonic humidifiers, the H910BL features Silver Clean Protection.

And since it is an ultrasonic humidifier, it disperses soothing cool mist into the air while being ultra-quiet.

The PureGuardian H901BL does not have traditional humidifier components such as evaporating pads, filters, and wicks that you need to regularly clean or replace.

Plus, its compact size makes it great for tabletops. The design is also very sleek and stylish.

And like other PureGuardian humidifiers, the H910BL also comes with a low water indicator and an optional nightlight, making it a good choice for the kids’ room.

Editor's Rating
4.9/5

PureGuardian Humidifiers Buying Guide

pureguardian h4810 review

About PureGuardian

Based in Ohio, Guardian Technologies is a relatively new name in the health and wellness industry, but it has already established itself as one of the top brands in the market.

The company aims to solve common household problems like poor indoor air and strives to create a healthy and comfortable air environment inside your house.

The company believes in giving its consumers a more rewarding life experience by elevating their home environment standards.

It does so with its range of PureGuardian air purifiers, humidifiers, and essential oil diffusers that feature safe, innovative, and powerful technologies.

Why Pureguardian Humidifiers over Other Brands?

All PureGuardian humidifiers use Ultrasonic technology, so they don’t make a lot of noise. They are also designed with cutting-edge technologies and don’t put a big burden on your pocket. 

But one feature that makes PureGuardian humidifiers different from other brands is its patent Silver Clean Technology that prevents the growth of mold and mildew on the water tank’s surface.

And unlike most humidifier brands that only offer a 1-year warranty, some PureGuardian humidifiers come with a 3-year warranty.

PureGuardian humidifiers are available in different sizes and include special features that meet specific needs.

For example, the H940AR is best for small spaces like your office or study, while theH5175W is better suited for bigger rooms.

What to look for in Pureguardian Humidifiers

Even though the brand is reliable and has quality products, not every PureGuardian humidifier will work for you.

To pick one that meets your needs, make sure you take the following into account:

Size/Tank Capacity

PureGuardian offers a wide range of products that fulfills different needs. You can find models that can cater to areas as small as 200 sq. ft and as large as 650 sq. ft.

For instance, the PureGuardian H4810 has a 2.5-gallon tank and covers up to 650 sq. ft.

For people who travel frequently, the PureGuardian H500 is a good option. It uses a water bottle and is very compact, so you can easily carry it along with you.

And if you’re looking for a humidifier for mid-sized rooms, check out the H7550. With a 1.32-gallon water tank, it can cover spaces up to 300 square feet.

Run Time

The runtime of PureGuardian humidifiers ranges from 12 hours to 120 hours, depending on the tank capacity. The larger the tank capacity, the more water it can hold, and the longer it can run without a refill.

The PureGuardian H910BL has the smallest tank capacity of 0.21 gallons and can run for 14 hours.

The PureGuardian H8000B is one of the products with the largest capacity of 2 gallons and will run straight for 120 hours.

Having a longer run time means you can stay unbothered about your humidifier without having to refill it constantly after a short while.

Controls

PureGuardian humidifiers come with a timer and a range of controls to control the mist levels as well. Such controls allow you to create an environment you are most comfortable with.

Most PureGuardian humidifiers have touch buttons on the front of the device, so you can adjust the unit quite easily. 

Timer Settings

Only some PureGuardian humidifiers include a 12-hour timer that allows you to customize your run time and help you save energy.

Some models that come with a timer include the H8000B, the H5450BCA, and the Ultrasonic RH3200BCA.

Filter

pureguardian ultrasonic humidifier h4810 reviews

Filters act as a barrier between the water tank and the part of the humidifier that blows out air. These filters are standard for all PureGuardian products.

You don’t need to replace a PureGuardian filter as soon as it gets a little dirty. You can clean the pre/charcoal filter layer attached to the HEPA part of the filter using the brush attachment tool found on your vacuum cleaner.

However, once the HEPA part of the filter is dirty enough that it looks grey or black, as opposed to the initial white color, you need to replace it.

Choice of Warm or Cool

PureGuardian has both warm and cool mist and cool mist only humidifiers. Both do an effective job, but since warm mist brings up the room’s temperature, it is suitable for use in winters.

On the other hand, cool mist humidifiers give off a room temperature mist.

Noise Levels

Since ultrasonic humidifiers do not rely on fans to work, they are pretty quiet.

All PureGuardian ultrasonic humidifiers make minimum noise so that you have a good night’s sleep. You can even keep one in your child’s nursery, and it won’t disturb him.

Humidistat

The humidistat keeps humidity levels in check and turns the unit off once the humidifier reaches the pre-set humidity level.

Most PureGuardian humidifiers come with a humidistat and an auto-off function.

How to Use a Pureguardian Humidifier Properly

PureGuardian Humidifiers are user-friendly and easy to operate. In most cases, you only need to fill the water tank, turn it on, and choose the mist setting.

For further information about how to use your PureGuardian humidifier, make sure you go through the provided user manual.

Care and Maintenance

pure guardian humidifier reviews

It is very easy to care for and maintain a PureGuardian humidifier. Make sure you clean the unit from time to time to avoid problems like mold growth and water contamination.

Fill up the tank with clean or distilled water to avoid white dust. Also, make sure that the ultrasonic disc is clean to avoid dust blockages.

Troubleshooting Pureguardian Humidifiers

In case your PureGuardian humidifier stops operating properly or does not function at all, there are some basic measures you can take.

If your humidifier stops producing water vapor or humidity, ensure that the ultrasonic disc is clean and that the tank is attached correctly. Then, unplug the unit and then plug it in again to see if it works.

Sometimes, your humidifier might blow out air instead of mist. This could be because of excessive water in your tank. To fix this problem, just drain out some water from the tank.

The problem could also occur if the room’s current temperature is higher than the desired humidity level. To solve this problem, just increase the desired humidity. Also, clean out the tank and make sure there’s no residue left behind.

If the water in your tank is too cold or the ultrasonic disc is dirty or damaged, the humidity level will be low. So make sure you keep the disc clean and use room temperature water.

If you have a white dust problem, use distilled water in your tank as hard water has minerals residue that produces white dust.

If your warm mist humidifier fails to produce warm mist, it could be because humidifiers need at least 10 to 15 minutes to warm up the water. We recommend letting the unit run on the warm setting for at least 30 minutes.

If the humidifier starts making weird noises, make sure the tank is fitted securely and that the humidifier is placed on a flat surface.

Lastly, if the unit stops working suddenly, just unplug the device and plug it in again, and it should work.

If any problem still persists after you troubleshoot it, it’s best to call the company for further help.

Frequently Asked Questions

pureguardian humidifier review

How much water can you add to the tank?

This depends on the tank capacity of each PureGuardian humidifier.

Some models suitable for larger areas have a large 2 to 2.5-gallon tank, while some have a small 0.5-gallon tank. 

Can you use tap water in the PureGuardian humidifier?

While you can use tap water in a PureGuardian humidifier, we recommend using filtered or distilled water to keep the tank clean and prevent white dust.

Tap water can gradually damage the unit as well.

Can a PureGuardian humidifier cause health problems?

Generally, PureGuardian humidifiers are safe to use and don’t create health issues. However, if you try to combat dry air aggressively, too much humidity can also be a little dangerous.

Plus, if you don’t clean the water tank properly, it can spread harmful bacteria and mold along with the mist.

Warm mist humidifiers are also a potential burning hazard for children.

Final Verdict: What is the best PureGuardian humidifier sold today?

PureGuardian has over 20 ultrasonic humidifiers available, and all of them come with similar features, making it tricky to choose the best one.

But one humidifier that definitely stands out is the PureGuardian H8000B.

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