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Bionaire BUL7933 Tower Humidifier Review

Overall Rating:
4.4 out of 5 stars
Bionaire BUL7933Click to Enlarge

Bionaire BUL7933

The Bionaire BUL7933 Tower Humidifier has been revered for its ability to humidify large rooms, but it saves space at the same-time. With an output of 2 gallons per day, the BUL7933 will have no trouble with the atmosphere in a large bedroom or living space. Since units like this are often on display, a lot of thought has gone into the design of this model. It’s sleek, comes in black with chrome trim and won’t look out of place in any room.

Review Details

The BUL7933 has all the features you would expect with a humidifier and more. It uses ultrasonic technology to produce a visible ultra fine mist, and the nozzle rotates so the direction of the mist can be controlled. It also has an in-built clock and night light, making it perfect for the bedroom.

Advanced LCD settings will display both the actual and set humidity levels. Additionally, it has 3 speeds and can be used continuously for up to 48 hours. You also have the added benefit of a remote control so the unit can be operated anywhere in the room.
Because of the ultrasonic technology, the BUL7933 is very quiet when in use; yet another feature that makes this Bionaire a perfect bedroom humidifier.

What We Liked

  • Rotating Nozzle
    The nozzle that releases the visible but ultra fine mist can be set to rotate. This means you can set the mist in whatever direction you desire.
  • Advanced LCD Display
    The BUL7933 will constantly display both the actual and set humidity levels in the room, making it easy to see when the unit has reached the desired level.
  • Space Saving and Attractive
    With its tower design, this humidifier will fit neatly into place without taking up too much space. It has also been thoughtfully designed with a sleek black finish, chrome edging and very modern look.
  • Ultrasonic Technology
    Using the latest in ultrasonic technology, this humidifier will produce a cooling mist with the minimal amount of noise, making it perfect for overnight operation.

What We Didn't Like

  • Inaccurate Humidistat
    Compared to some models on the market, the BUL7933 may not be as accurate with the humidity levels as you might expect. This happens when the directional mist option is used as the vapour can land close to the unit, causing an inaccurate reading.
  • Filterless
    Like more filterless models, the unit can produce a white residue. If you don’t want the expense of replacement filters, using distilled water will help.


The Bionaire BUL7933 is reasonably priced given the area it covers, and comes with many features other models in this price range cannot boast. If you cannot live with the odd spec of white residue due to the filterless technology used with this model, we recommend you take a look at the Luma Comfort HCW10B which includes a demineralization cartridge. It’s in the same price range but doesn’t come with many of the features included with the BUL7933.

Review by AirReflect ©
Last modified: April 21, 2013 (Prices are updated daily)
Bionaire BUL7933
Dimensions (L x W x H):
9.5 x 8 x 23 inches
8.6 lbs
Power Supply:
120 Volts
45 Watt, 0.45 Amp
Humidifying performance:
2 gallons per day
Tank capacity:
1.5 gallons
Operation time:
48 hours per tank
Speed control:
Yes, 3 speeds
Cool Mist:
Warm Mist:
Automatic Shut-Off:
Antimicrobial Protection:
Remote Control:
Empty Tank Indicator:
1 year

Bionaire BUL7933 Prices

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