Model # H12 400HB

Internet #203524466

AIRCARE 5.4-gal. Evaporative Humidifier for 3,700 sq. ft.


5.4-gal. Evaporative Humidifier for 3,700 sq. ft.

  • Best square foot coverage per dollar spent
  • Save up to 10% off your annual heating bill
  • Many health benefits
$10706 /each
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Frequently Bought Together

Product Overview

The H12 400HB offers convenient whole house coverage in a single bottle design. It adds invisible moisture to your home by moving dry air through a saturated wick. Maintaining proper humidity levels between 30-50% in your home/office/workplace has been scientifically proven to help prevent the flu and allergies. It reduces static electricity, relieves dry skin and scratchy throat, and protects fine furniture and wood floors. Proper humidity makes you feel warmer allowing you to lower your thermostat setting which will save money.

  • 5.4-gal. water capacity
  • Up to 3,700 sq. ft. coverage
  • Up to 11.83-gal. daily output
  • Analog controls with digital display
  • 4-speed motor
  • Adjustable humidistat and automatic shut-off
  • Water refill and check filter indicators
  • Casters for easy portability
  • Easy-fill water bottle w/refill hose

  • Click here for more information on Electronic Recycling Programs

Info & Guides

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


Air Treatment Product Type
Console Humidifier
Color Family
Browns / Tans
Control Type
Humidifier Features
Adjustable Humidistat,Automatic Moisture Control,Automatic Shut Off,Tank Empty Indicator
Humidifier Tank Capacity (Gallons)
Included Items
No additional items included
Minimum run time (hours/tank)
Moisture dispersion type
Number of Fan Speeds
4 or More
Product Weight (lb.)
Room Size (sq. ft.)
Whole House
Voltage (volts)
Water Filter Replacement Model#

Warranty / Certifications

Certifications and Listings
ETL Listed
Manufacturer Warranty
2-years (less wicks/filters)

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Customer Questions & Answers

How well does this unit work with a 2 story house? Also where would you put it?

My house was built in the 1800s and doesn't have an open floor plan. We have had 2 different kinds of humidifiers that work for 2000 Sq foot houses and mine is 3100. Thanks for any and all help.
Asked by: nicolastelesco
For best distribution place as close to cold air return as you can.
Answered by: mfg2414
Date published: 2016-01-23

Does it have

an Auto Shutoff when runs out of water ? About how long do the filters last ?
Asked by: CloggedUp
Wicks typically last a season, depending on the amount of use. When the unit is set below 65% it will go into a dry out mode for 2 hours and then shut off when it is out of water.
Answered by: EssickAirProducts
Date published: 2015-12-23

size of fitter

Asked by: tan
I believe it's about 3" deep x 11" wide by 18" high.
Answered by: Papatuzz
Date published: 2015-11-07

How to fill

Is the refill located in the top of the water container or at the bottom which would require lifting to refill?
Asked by: Hal
You remove the small black cover on the top left and then lift out the plastic tank. Turn it upside down and remove the cap to fill it. So in answer to your question, the refill is located on the bottom so you need to lift it.
Answered by: Papatuzz
Date published: 2015-11-07
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Customer Reviews

5.4-gal. Evaporative Humidifier for 3,700 sq. ft. is rated 3.2 out of 5 by 35.
Rated 4 out of 5 by from Works as designed no complaints... Works as designed no complaints
Date published: 2017-07-18
Rated 5 out of 5 by from Works better than any of the other "whole house" humidifiers I've purchased over the years. Quiet, efficient, almost too good. Unlike every other "whole house" humidifier I've ever purchased, with the settings on low, my home stays comfortable. Even my cat appreciates the no-shock, no static level we now enjoy!
Date published: 2013-12-24
Rated 4 out of 5 by from Humidity control I live in the southern Nevada desert and it takes 10 gallons a day in order to keep a 37 to 40% humidity. This unit does the trick. I am very happy with the results.
Date published: 2016-12-27
Rated 5 out of 5 by from good one for the price this is the second one we bought the first one lasted 15 yrs
Date published: 2014-11-01
Rated 4 out of 5 by from Humidifies Well. A bit noisey all night (tank fill noise) Product humidifies well. However, after you fill the plastic tank as recommended, the water slowly fills all night. In doing so, it goes "clunk" "clunk" "clunk" "clunk" every two minutes and is still keeping us up in the evening ...hoping we will just get used to it. I think the design is flawed in that they need to have a something to allow to breath after you flip it over and let it empty into the main resevoir..not sure. Besides that, we like it.
Date published: 2014-06-10
Rated 4 out of 5 by from Product works well and is easy to refill. Directions for setup could be a little clearer. It ho... Product works well and is easy to refill. Directions for setup could be a little clearer. It holds about 5 gallons. The one tank provided holds about 2.5 and you have to let it drain into the bottom of machine then refill the tank and let it drain slowly into the bottom as well ( a lot of gurgling noise while filling). We have the machine set up in our living room/ dinning room area (about 1000 sq ft) and it does humidify well. The machine is somewhat noisy (probably 30-40 db).
Date published: 2016-12-13
Rated 3 out of 5 by from Review of console humidifier To be fair, there can be no comparison between the quality of the humidifier I purchased twenty years ago and the one I have purchased recently to replace it. The general quality of the older appliance wins, hands down. Having said that, I will say that this product has the largest water reservoir of any that I could find on the market which is a plus. Still it must be refilled twice a day to maintain 30% humidity on the main level of my house (1350sqft), unlike the one I replaced which had a reservoir that was good for 3 days. One other negative is that the water container, which is quite heavy when full, has to be inverted and lifted into the device rather than filled in place and is quite difficult to "seat". Other than that it is not a bad machine. It looks good and is relatively quiet when run on low speed.
Date published: 2015-02-06
Rated 5 out of 5 by from Pleased with Performance and Appearance I purchased this humidifier as a replacement product. Love the appearance because it really fits with my decor! It makes the house much more comfortable and the low fan setting is relatively quiet. I notice when it comes on but it is not obtrusive. There are two cons to this product. The first issue is that filling the reservoir is a bit of a challenge. You have to have a faucet that the transfer hose will fit on and you have to put up with some squirting water if the hose connection is just the tiniest bit off. Just using a bucket to fill the humidifier would be better. Also the blower motor is not shielded in any way. It would be very easy to spill something on to it and short it out. All in all I am pleased with the unit.
Date published: 2013-12-17
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