Model # HM495UC

Internet #203681012

Holmes 2.8 Gal. Utrasonic Humidifier


2.8 Gal. Utrasonic Humidifier

$3999 /each
store icon Loading Buying Options...
package icon Loading Buying Options...
Sorry, but we ran into issues loading these options. Please try refreshing.

Frequently Bought Together

Product Overview

The Ultrasonic humidifier from Holmes will increase the benefits of good air quality and provide relief from some of the harmful effects associated with dry air. Designed for medium size rooms, the ultrasonic humidifier produces a visible mist that you can see and feel. The unit offers a variable mist control and operates silently. The humidifier will run for 24 hours on a full tank.

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents.  Download a free copy from the Adobe Web site.



Product Depth (in.)
Product Height (in.)
Product Width (in.)


Air Treatment Product Type
Tabletop Humidifier
Color Family
Control Type
Humidifier Features
Automatic Moisture Control
Humidifier Tank Capacity (Gallons)
Included Items
No additional items included
Minimum run time (hours/tank)
Moisture dispersion type
Cool mist
Number of Fan Speeds
Product Weight (lb.)
Room Size (sq. ft.)
Medium (400-1000 sq. ft.)
Voltage (volts)
Water Filter Replacement Model#

Warranty / Certifications

Certifications and Listings
No Certifications or Listings
Manufacturer Warranty
1 Year

More Products With These Features


Customer Questions & Answers

I poured tap water into the tank, plugged it in turned it on and I don't see any mist ccoming out. Running quietly

Asked by: Grands
Thank you for your inquiry. We would be happy to assist you with this. Please call Holmes® at 1-800-546-5637; we are available Monday through Saturday from 8 AM to 8 PM, EST.
Answered by: Holmes Brand Team
Date published: 2017-05-25

does this humidifier require a filter?

does this humidifier require a filter?
Asked by: mjg
No this humidifier does not require any filters.
Answered by: Holmes Brand Team
Date published: 2016-12-15
  • y_2017, m_7, d_25, h_9CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_2
  • loc_, sid_203681012, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=BEST_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=POSITIVE_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 95ms

Customer Reviews

2.8 Gal. Utrasonic Humidifier is rated 3.0 out of 5 by 42.
Rated 1 out of 5 by from Ackward to fill . . . Now can't get parts!. The tank fills from the bottom. Since the top isn't flat, it can't stand by itself when you're filling it. You have to keep it upright. I filled ours in the bathtub with a shower wand. (It's too tall for the kitchen sink.) Holding the tank with one hand & manipulating the wand and faucets with the other took some practice. The plug is in the tank--not in the fill cap. When the plug gasket goes, you have to buy a new tank. Oh wait, that part is No Longer Available, meaning you have to buy a whole new unit when the plug gasket inevitably fails.
Date published: 2017-03-19
Rated 5 out of 5 by from Love it just to fine a parts for the tank I need a small rubber piece to hold the water in at the bottom of the tank
Date published: 2017-03-29
Rated 5 out of 5 by from I own 5 humidifiers Yep. I'd like to consider myself an expert. I suffered from horrible nosebleeds 2-5 times a day due to the dry Los Angeles air. At the doctor's recommendation, I bought a Vicks humidifier, but it made a whooshing noise that was just too loud and obtrusive to sleep with. I then started purchasing every different kind of humidifier, and they were all badly designed, hard to fill, or too noisy. I saw this on a demo at a neighborhood Do It Center, and immediately knew it was special. It produces a flow of fog (like a Halloween fog machine, but evaporates instantly) and is as silent as they get. I have owned it now for 4-5 years and use it all night, every night. The tank also lasts at least 3 nights of running at half power. The only issue I found with it is that it gathered a scaly buildup of minerals from the extremely hard tap water I put into it. A bottle of CLR and a scrub brush fixes the problem once a year. I came back to the website to buy another one for my college dorm. Thanks for making a great product!
Date published: 2015-08-25
Rated 1 out of 5 by from N This was my first item. Small amount of any mist discharged. Not worth the money
Date published: 2016-11-29
Rated 1 out of 5 by from worked for 1 year I bought this last year and it worked fine. went to use it this year and it does nothing. It's running but no steam coming out. I have my old one and had to revert back to that. so disappointed
Date published: 2014-11-28
Rated 1 out of 5 by from very noisy Bought this ultrasonic as I thought it would be easier to clean then my warm air humidifiers. While this tank holds a lot of water and I like that I don't have to constantly fill it, the noise bothers me. It's like having an old fridge running. The noise started right from the box, so it's not like I've ran it for a yr and then it got noisy. Sometimes after I clean it and start it again, it will actually make a rattling noise, but that usually go away. Also it's impossible to clean the spout where the steam comes out. Try a different model or brand, don't spend the extra $ on this ultra sonic.
Date published: 2014-12-11
Rated 5 out of 5 by from Best one I've ever had I've had 5 different humidifiers over the past 8 years --- the ones with filters were an expensive pain to clean and the drugstore brands were noisy or minimally effective. This Holmes Ultrasonic is by far the best. I bought it at Sears in 2013; it lasted 3 years when it quit misting, although the motor would run. Couldn't find another one locally, so bought a Homedics which I returned the next day due to a high pitched whistling sound it made. Found my reliable Holmes online at their website and ordered it. Great customer service. It is relatively quiet as humidifiers go and makes a not unpleasant white noise type sound. The variable mist control is a plus.
Date published: 2016-03-21
Rated 4 out of 5 by from low great...did have to get a replace We purchased this a year ago Dr. Recommend. I stated to use it again this year and nothing. So I called the Co. They were great. Backed up their product sent me a new one. I'm very happy with this humidifier. I have since purchased another for mom and a space heater.
Date published: 2014-12-26
  • y_2017, m_7, d_25, h_11
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_42
  • loc_, sid_203681012, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 106ms