Air Innovations MH-509 Ultrasonic Cool Mist Humidifier

Air Innovations MH-509 Ultrasonic Cool Mist Humidifier is rated 4.5 out of 5 by 24.
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Special Price $69.99 Regular Price $89.99
Out of stock
SKU
HUMID16-WHT
  • Works for rooms up to 400 SQ FT
  • 1.4-gallon water tank with 70 hour run time
  • Ultrasonic cool mist room humidifier
  • Includes permanent ceramic filter that never needs replaced
  • Programmable digital timer
  • Available in multiple colors
  • Measures 9.75” W x 6.5” D x 13.5” H

Smart Humidifier

The Air Innovations MH509 ultrasonic, cool mist, Smart Humidifier™ is one of the top rated, longest running, and most versatile room humidifiers available for its size. Key features are a 1.4-gallon tank that runs for a full 70 hours on low (almost 9 nights of sleep without refilling) and is completely silent when running. Powerful enough to add humidity to large rooms up to 400 sq. ft., with a programmable built in humidistat that monitors and maintains the humidity level you set.

Convenient Features

It also has a built-in handle on the top and bottom of the tank for easy carrying, an extra wide opening for easy filling, as well as a fully programmable timer to turn it on and off when you want it to. There is even an auto safety shut off and audio beep to alert you when it runs out of water. Great for kids and babies, this cool mist humidifier also rehydrates your skin, relieves dry eyes, scratchy throats, post nasal drip and helps reduce snoring so you sleep better. As a bonus, it also rehydrates wood furniture, cabinets, wood floors and wooden guitars.

Low Maintenance

The entire unit and base are made of antimicrobial plastic to prevent bacteria, mold, and mildew growth and it comes with a permanent ceramic filter to help trap impurities in your water. Unlike competing humidifiers, it also features a 360-degree rotating mist nozzle which helps direct the moisture where you want it. The Air Innovations MH509 Ultrasonic Cool Mist Humidifier also include a 1-year warranty from date of purchase.

Rated 4 out of 5 by from Opportunity for improvment We were fairly happy with this product and used it every day last winter. I especially liked the timer feature. However there is a flaw in design- when we packed it away for the summer the nozzle came off and went on to live a mysterious life some where else. This renders the products completely useless and dysfunctional. To me this is very poor design and can be fixed easily because a critical part can easily be designed to fit such that doesn't fall off. This is especially true if the product use requires you to turn it upside down for refilling. I can bet you there are many nozzle less humidifiers sitting in attics.
Date published: 2017-12-05
Rated 3 out of 5 by from Disappointing Performance Although this humidifier is rated for a 400 square foot room, it barely increases the percentage of humidity in a closed 200 square foot room even when run on high for 8 hours. The built-in humidistat is also very inaccurate. Although you can set the humidifier to turn off when desired humidity is reached, this humidifier never performed well enough to attain the desired 40%. I did end up purchasing a separate humidistat, so I could better measure humidity. What registered on it was always far different than what registered on the MH509. Positive points: easy to fill and very quiet.
Date published: 2018-02-08
Rated 5 out of 5 by from Great Purchase will buy another soon This is the humidifier I have ever purchased. Easy to use, straight forward design and refilling the water tank is an easy 1 step process. I keep this unit at my office as the floor I work in keeps the AC running constantly and now that it's winter the entire building has become extremely dry. This has made a world of difference in just 2 days since I installed it.
Date published: 2015-12-10
Rated 5 out of 5 by from Great Purchase will buy another soon This is the humidifier I have ever purchased. Easy to use, straight forward design and refilling the water tank is an easy 1 step process. I keep this unit at my office as the floor I work in keeps the AC running constantly and now that it's winter the entire building has become extremely dry. This has made a world of difference in just 2 days since I installed it.
Date published: 2015-12-10
Rated 5 out of 5 by from Nice little unit! We purchased this unit to use in a non-typical application (extremely small square footage area) and are very happy with out selection. We did have a question and customer service was not only quick with the reply, but was 100% accurate in the source of our problem. I would not hesitate to purchase another item from Air Innovations.
Date published: 2015-02-13
Rated 5 out of 5 by from Quit, and Effective This is the best humidifier I have owned. It is quiet with no white powder residue. the permanent filter is my favorite, other humidifier's I have had to go without using for a few days because I could not find the proper filter replacement. I think it is a good buy for the money and would not hesitate to purchase another one!
Date published: 2015-08-14
Rated 5 out of 5 by from Model MH-109 This is the third MH-109 humidifier I have purchased - one for each bedroom. Unlike models that I have come across in retail stores, Air Innovations are very simply to re-fill and clean. I also really like the humidistat feature and the timer is very helpful. I highly recommend the MH-109 humidifier.
Date published: 2017-01-10
Rated 3 out of 5 by from robert Great humidifier, needs a handle so you can place the water tank back in the housing. Wife couldn't hold on to the tank when it was full and dropped and broke it. now I have to buy a new one. Need to think about these things when you design them, they have to be functional besides good looking!
Date published: 2016-12-26
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