PureGuardian® H7550CA Elite 90-Hour Smart Mist Ultrasonic Humidifier

Ultrasonic Humidifier

By pureguardian

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Description & Features+

The PureGuardian® 90-Hour* Smart Mist Ultrasonic Humidifier by Guardian Technologies guards against problems caused by dry air in the home, making life pleasant for those with cold, flu, allergies and dry skin. A Smart Mist sensor monitors the humidity level in the room and adjusts accordingly to maintain a consistent humidity level. Silver Clean Protection fights the growth of slimy mold and mildew on the surface of the water tank. Thanks to ultrasonic technology, it is ultra-quiet when it runs making it ideal to have on while you sleep. The humidifier is equipped with the option for warm or cool mist and has a light that turns red to let you know when it’s time to refill the water tank. A timer allows you to customize the desired run time for up to 12 hours. It features a soft glow night light that turns on and off and easy-to-use digital controls.
• Silver Clean Protection fights the growth of mold and mildew on the surface of the water tank
• Optimize comfort – you choose warm or cool mist
• Save money – Eliminates the need for costly replacement filters, wicks or pads
• Large & small rooms
• Variable spray
• Smart Mist Technology – Smart mist sensor monitors the humidity in the room and automatically adjusts output to maintain desired humidity level
• Provides up to 90-hour run time
• 1.32 gallon tank
• Extension reach wands
• Up to 12-hour timer
• On/ Off night light
• Water level window
• 3-year limited warranty


Available for Shipping to Canada Post
Assembled Height
13.98 in
Assembled Length
5.12 in
Assembled Weight
6 lb
Assembled Width
9.76 in
Timer, Auto Shut Off
90% plastic, 10% eletric
Moisture Settings
Output per Day
6 l
Supplier Warranty Type
3-Year Limited Manufacturers
Supplier Warranty

3-year limited warranty

Supplier Warranty Length
3 years
Product Identifiers
Walmart Item #
Model #

Return Policy+

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 > Return Policy

You can return this item within 90 days from the day you receive your online order.

There are two easy ways to return this item:

  • Return this item to a Walmart store
  • Return this item by mail

From the Manufacturer +

Ratings & Reviews+

PureGuardian® H7550CA Elite 90-Hour Smart Mist Ultrasonic Humidifier is rated 3.0 out of 5 by 13.
Rated 3 out of 5 by from I was under the impression that it was bigger. I should have read the specifics better, but I thought it had a bigger tank then the one I already had. And saying it lasts longer made me believe it was bigger and has a bigger tank. Neither of which is true. It isn't a bad humidifier but it isn't a 90 hour humidifier unless you have a relatively humid atmosphere in the house which I don't.
Date published: 2014-04-09
Rated 1 out of 5 by from Not what I expected I purchased this item with the expectation that it would provide humidity in the winter climate of Alberta. Unfortunately, even with setting the "auto" to 50%, the humidity in my bedroom never rises above 18%. And, according to the instruction pamphlet that accompanied the product, this is to be expected.
Date published: 2014-11-15
Rated 4 out of 5 by from nice design Works well at low and medium settings, but turns off when set to high and I can`t figure out why. That said, the unit has been running continuously (requires refilling only once every 24 hours at medium setting) for over a month with no problems. It is a nice looking unit that blends in well with the room.
Date published: 2013-12-09
Rated 5 out of 5 by from Excellent humidifier Great design that makes your room look good and my wife likes to keep it in the bedroom. Only minor disappointment is it takes too long (15min according to the manual)for warm mist. I was expecting to have warmer mist instantly. Very quiet, nice design. Good to keep in your bedroom.
Date published: 2014-11-03
Rated 1 out of 5 by from Big Disappointment I wish that someone would have told me that although you can shut off the nightlight, which is a glaring blue light, the light showing the percentage of moisture is also a glaring blue light. I had to place black tape over it. The unit is also not whisper quiet. I am returning this item.
Date published: 2016-12-15
Rated 1 out of 5 by from didn't receive every part It may be a wonderful humidifier but after spending far too much time trying to get the needed special brush the instructions said was the only thing to use I just packed up the whole thing and took it back to Walmart. So perhaps it would have been just what was wanted but will never know. Now back to hunting for something else. So my advice is check everything to be sure it is there before trying to test it. Figure if I couldn't even get the missing brush any other problem would be difficult to resolve so will go with another product.
Date published: 2014-04-04
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Q & A+



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