Best Dual Mist Ultrasonic Humidifiers

An ultrasonic humidifier uses a diaphragm that vibrates at an ultrasonic frequency (thus the name) to create water droplets that are released in the form of mist. 

These types of humidifiers can either emit warm mist only, cool mist only, or both. An ultrasonic humidifier that can emit both warm and cool mist is called a dual mist ultrasonic humidifier. 

Because of these extra functions, dual mist ultrasonic humidifiers are typically more expensive, quieter, and require more maintenance as compared to other types of humidifiers

Alleviate cold and flu symptoms – If you’re suffering from cold and flu symptoms, using a humidifier at night may help you recover faster. It can moisten your nasal passages and allow you to breathe easier. Humidifiers may also help alleviate sore throat and sinus headaches.

Reduce allergies and asthma attacks – People who suffer from allergies or asthma tend to have a worsening of symptoms when the air is dry. Adding moisture to the air can help reduce allergens and any pollutants that may cause asthma attacks. Using a humidifier together with a high-quality air purifier will be even more effective at reducing allergens at home. 

Reduce frequency of infections – When air isn’t too dry, bacteria and viruses tend to be less infectious. Research has shown that a humidity level of 40% or higher decreased the infectivity of influenza virus by 14%.

Prevents dry skin – When your skin is exposed to dry air, it cracks and wrinkles more easily. It may become irritated and itchy, and even your scalp may be affected. To prevent this from happening, you should keep humidity levels at around 40% or higher. This is easy to achieve with a humidifier. 

Reduces snoring – Snoring can be caused by a throat that is too dry. Humidifiers can help moisten the respiratory tract and lessen both the noise and intensity of snoring by adding moisture to the air. 

Protect wooden furniture – Wooden furniture, walls, and floors are more prone to cracking and shrinking when humidity levels are low. This can lead to expensive repairs and even structural damage. A humidifier will help add moisture to the air to prevent this from happening. 

PROS:

• Versatility – Dual mist ultrasonic humidifiers are able to produce both warm and cool mist depending on what you need, making them more versatile options compared to single mist humidifiers.
• More features – Dual mist ultrasonic humidifiers generally have more features compared to single mist humidifiers. These features include the essential features mentioned above as well as smart modes like auto mode and sleep mode which are really useful for people who want to set and forget their humidifiers. 
• More benefits – Because they have the power of both cool mist and warm mist, you also get double the benefits!
• Quiet – Ultrasonic humidifiers, regardless of whether they are single or dual mist, are generally quieter than other types of humidifiers. This is especially beneficial if you’ll be using one in your bedroom. 

CONS:

• More expensive – Because dual mist ultrasonic humidifiers use a more sophisticated system, they are also more expensive upfront. 
• High maintenance – While this is true for humidifiers in general, dual mist ultrasonic humidifiers are even more high maintenance and will need to be cleaned more often than other types of humidifiers. 

• Room coverage – When choosing a dual mist ultrasonic humidifier, you need to be mindful of the area you’ll need to cover. In the majority of cases, humidifiers are built with wider coverage in mind, but there are some compact models which are less capable. 

  Most ultrasonic dual mist humidifiers will offer coverage of between 500-900 sq.ft which should be more than enough for any room. Any humidifier at the higher end of this range will be more expensive and you’re unlikely to get any more benefit from its additional range. Therefore, models with lower to mid-range coverage are usually best value. 

• Humidistat & Ease of Use – A built-in humidistat is a very useful feature as it helps you to monitor and control humidity levels in your home accurately. Also, whichever humidifier you pick, it’s important that it’s easy for you to use. A model with multiple features may be attractive at first, but if the controls are difficult to operate, enthusiasm will wane quickly and you’ll regret your choice. 
• Water Capacity – If you’re planning to keep your humidifier running for long periods, it’s best to opt for a model which has a large tank capacity. Otherwise, you’ll find yourself having to refill the tank more than you’d like, which is time-consuming and inconvenient if you’re busy. A capacity of at least one gallon should be sufficient for daytime, while a three-gallon model will be enough to run for 24 hours or more, depending on performance.  

• Performance – Capacity is one thing, but the amount of mist your ultrasonic humidifier can create from the water it holds depends on its performance. 

  Each humidifier should state how much water it is capable of vaporizing over a certain period of time. This is known as the ‘humidity output’ or ‘mist output’. There may be a separate figure for both warm and cool mist, as output can vary between them. 

  For efficient humidity control at home, you should look for a humidifier which can vaporize its tank capacity in no more than 24 hours.

• Do Ultrasonic Humidifiers Leave White Dust?

• Many humidifiers create white dust due to the presence of dissolved minerals in water. Both ultrasonic and evaporative humidifiers will create mineral dust which settles on your furniture, but ultrasonic humidifiers often create more because they usually lack filters. 

  That said, some ultrasonic humidifiers include ceramic cartridges which are somewhat effective in reducing the production of dust. You can also limit mineral dust by using purified and demineralized water, but this is quite expensive in the long run. 

• Why Do Ultrasonic Humidifiers Need To Be Cleaned So Frequently?

• All humidifiers must be cleaned regularly to prevent buildup of mold and bacteria. The warm, moist environment inside your humidifier is perfect for this, so if you do not clean your humidifier frequently, it will begin to circulate bacteria and spores which may negatively affect your health. 

• How Often Will I Need To Refill a Dual Mist Ultrasonic Humidifier?

• This depends on the capacity of your dual mist ultrasonic humidifier, how often you use it and how well it performs. Most ultrasonic humidifiers will clearly state how much water they are able to humidify over a period of time, either in terms of working capacity or volume usage per hour.  

• Are Dual Mist Ultrasonic Humidifiers Safe For Children & Pets?

• Generally, warm mist humidifiers should be avoided if they’re being used around children and pets. This is because when in warm mist mode, they can become dangerously hot, presenting a risk of scalds. 

  Therefore, if you have children or pets, it’s best to keep the humidifier well out of reach to protect against any accidents.