Levoit Dual 150 Ultrasonic Cool Mist Humidifier Review

Written by Amelia Jerden, Senior Staff Writer

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I’ll cover my experience testing the Levoit Dual 150 Ultrasonic Cool Mist humidifier, detailing how to use it and my pros and cons.

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If coughing, congestion, or a scratchy throat plagues you in the morning, a humidifier could be the answer to your problem. Humidifiers add moisture into the air, a great solution for winter dryness or an arid environment. In this review, I’ll be taking a close look at the Levoit Dual 150 Ultrasonic Cool Mist humidifier.

This itty bitty humidifier packs a lot of punch — and at an affordable price. Ready to find out more? Keep on reading to find out if this is the best humidifier for you. Or you can always skip ahead for my review summary.

Levoit Dual 150 Ultrasonic Cool Mist Humidifier

The Levoit Dual 150 Ultrasonic Cool Mist humidifier has a 3-liter capacity and doubles as a diffuser.

Sleepopolis Score

4.60 / 5

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Levoit Dual 150 Ultrasonic Cool Mist Humidifier Video Review

Is the Levoit Dual 150 Ultrasonic Cool Mist Humidifier Right For You?

Before I dive into the key features of this humidifier, here are some quick-hit recommendations for who should try it and who should consider another humidifier.

Who Should Try the Levoit Dual 150 Ultrasonic Cool Mist Humidifier

• If you have a smaller bedroom, this Levoit humidifier is a good option, as it doesn’t take up much space and can cover up to 290 square feet.
• If you want to control the mist level and direction, you will likely appreciate that this humidifier offers multiple mist settings and has a directional nozzle.
• If you like to use essential oils for scent or aromatherapy, you will be happy to know this humidifier doubles as a diffuser.

Who Shouldn’t Try the Levoit Dual 150 Ultrasonic Cool Mist Humidifier

• If you have a particularly large bedroom, this humidifier might not have the range to properly humidify the room.
• If you don’t want to replace a filter, this Levoit humidifier might not be a match for you, as it does use a filter that must be periodically replaced.
• If easy cleaning is a priority, you might be frustrated that none of the components of this humidifier can be washed in a dishwasher.

Key Features of the Levoit Dual 150 Ultrasonic Cool Mist Humidifier

The Levoit Dual 150 Ultrasonic Cool Mist humidifier consists of three main components: the tank cover, the water tank, and the base. It also comes with a cleaning brush and a spare filter.

The cover of the humidifier features a nozzle that allows you to control the direction of the mist. It spins 360 degrees, so you have complete control over the direction of the mist. 

The tank holds three liters and when full, can run for 25 hours on the minimum setting. Inside the tank is the mist tube, where the mist is formed. The sponge filter is also stored in the tank. When you receive your Levoit humidifier, it will come with one filter loaded, as well as one spare. This humidifier also doubles as a diffuser — you can also add essential oils to the water tank of this humidifier for an added aromatherapy benefit.

On the underside of the tank is a noise silencer, which works effectively to keep this humidifier quiet while running.

The tank rests on top of the base. On the front of the base is the control knob, which allows you to turn the humidifier on and off, as well as choose your level of mist output. There is a small refill indicator light above the knob, which will turn on when the tank needs to be refilled.

How To Use The Levoit Dual 150 Ultrasonic Cool Mist Humidifier

With that in mind, let’s go over how to use the Levoit Dual 150 Ultrasonic Cool Mist humidifier. Be sure to read through the provided instructions and safety information so you are fully prepared to use your humidifier.

Setting up the Levoit Dual 150 Ultrasonic Cool Mist Humidifier

1. When you first take your Levoit humidifier out of the package, remove all packaging and tape to disassemble the pieces. Rinse each off before first use.
2. Place the humidifier on a hard, flat water-resistant location at least 12 inches away from the wall.
3. Remove the cover from the tank and fill the tank with room-temperature water. You can fill the tank in a sink or by pouring water from a cup or pitcher into the top.
4. If desired, add 10 to 15 drops of an essential oil to the water tank once it is full.
5. Replace the tank cover.
6. Plug in the humidifier and turn the control knob to your desired humidity level.
7. If needed, redirect the mist by twisting the nozzle on the tank cover.

Cleaning the Levoit Dual 150 Ultrasonic Cool Mist Humidifier

Whichever humidifier you use, it’s important to keep it clean. Here are the recommended processes to clean and descale your Levoit humidifier.

Levoit recommends cleaning your humidifier every three days. First, you will want to rinse it out:

1. Unplug your humidifier.
2. Remove the tank cap and rinse it in water.
3. Remove the water tank from the base and pour any excess water out of both the tank and base. 
4. Remove the water filter assembly from the tank. Rotate it counterclockwise and lift it out.
5. Rinse the tank, base, and water filter assembly with room temperature water.

After rinsing it out, you should descale your humidifier:

1. Fill the tank with three cups of white vinegar.
2. Replace the tank cover and swish the vinegar around inside the tank.
3. Replace the tank onto the base and allow it to soak for 15 to 20 minutes.
4. Remove the tank from the base and remove the tank cover. Pour all the vinegar out of the base and tank.
5. Flip the tank over once it is empty to remove the noise silencer by pressing the release tabs and gently pulling away from the tank.
6. Remove the float from the base by pulling up on one end of the float and pulling the shaft out from the float brackets. One side of the brackets is open to allow you to remove the float.
7. Fill a small bowl or other container with vinegar and place the noise silencer, float, and water filter assembly (not the filter itself) in the vinegar to soak for 15 to 20 minutes.
8. Use the provided cleaning brush and a damp cloth to remove any mineral buildup on the humidifier.
9. Then rinse all parts of the humidifier with water until the smell of vinegar is gone.
10. Dry any wet components with a cloth and reassemble.

Levoit Dual 150 Ultrasonic Cool Mist Humidifier

The Levoit Dual 150 Ultrasonic Cool Mist humidifier has a 3-liter capacity and doubles as a diffuser.

Sleepopolis Score

4.60 / 5

Read Full Review

Check Price

Levoit Dual 150 Ultrasonic Cool Mist Humidifier Price

Wondering how much this humidifier costs? Price is an important factor in any purchase, including for humidifiers. The Levoit Dual 150 Ultrasonic Cool Mist humidifier is currently available on Amazon for $43.99. I’d say this is a great price for a humidifier, as they can range pretty widely in price and because this humidifier doubles as a diffuser. Humidifiers can range in price from as low as $20 to over $200. Additionally, the replacement filters cost around $10 for a 10-pack. 

Levoit Dual 150 Ultrasonic Cool Mist Humidifier

The Levoit Dual 150 Ultrasonic Cool Mist humidifier has a 3-liter capacity and doubles as a diffuser.

Sleepopolis Score

4.60 / 5

Read Full Review

Check Price

My Final Thoughts About the Levoit Dual 150 Ultrasonic Cool Mist Humidifier

I think the Levoit Dual 150 Ultrasonic Cool Mist humidifier is a great humidifier. It’s small enough to fit in just about any bedroom, but still has a three-liter tank capacity and a run time of 25 hours when full. The top-fill design is easy to work with, allowing you to easily fill the tank in the sink or with a pitcher. I also like that you can control the mist level and direction with this humidifier, giving you more control. 

This humidifier is available for an affordable price, making it a good choice for budget shoppers — particularly because it doubles as an essential oil diffuser, meaning you are essentially getting two products in one. I also liked the quiet operation of this humidifier. The low noise level is a big pro for light sleepers, as well as that it doesn’t feature any bright, sleep-disrupting night lights.

However, this humidifier might not be the best choice for sleepers with an especially large room, as it has a range of up to 290 square feet. I also didn’t love that this humidifier uses a filter. While filters are great for ensuring clean moisture is going into the air, replacing them can create extra maintenance. Humidifiers already require quite a bit of maintenance, so purchasing and replacing filters is an added level of work. 

Levoit Dual 150 Ultrasonic Cool Mist Humidifier Policies and FAQs

Levoit Dual 150 Ultrasonic Cool Mist Humidifier

The Levoit Dual 150 Ultrasonic Cool Mist humidifier has a 3-liter capacity and doubles as a diffuser.

Sleepopolis Score

4.60 / 5

Read Full Review

Check Price

Other Products To Try

• Vicks Warm Mist Humidifier
• Vicks Filter Free Cool Mist Humidifier
• Crane Top Fill Ultrasonic Cool Mist Humidifier
• Honeywell Cool Moisture Humidifier

Amelia Jerden

Senior Staff Writer

About Author

Amelia is a Senior Staff Writer for Sleepopolis. She primarily covers bedding and sleep accessory products in reviews, how-to guides, and more. You can also find her over on the Sleepopolis YouTube channel. Amelia is a graduate of the University of North Carolina at Chapel Hill, with double majors in media and journalism and in dramatic art. Outside of work, Amelia can usually be found on a hike, traveling to a new city, or at her local thrift store.

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