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pureguardian™ H4500 Ultrasonic Warm Cool Mist Humidifiers

DISCONTINUED: pureguardian™ H4500 Humidifiers
pureguardian™ H4500 Ultrasonic Humidifier

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DISCONTINUED: pureguardian™ H4500 Humidifiers

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More product info below...

Quietly disperses a micro-fine cool or warm mist. Manual controls. No evaporative filters or wicks to replace. Covers up to 500 square feet.

Why Green

  • No replacement filters - prevents waste
  • Sturdy and long lasting
  • Improves Indoor Air Quality (IAQ)

Expert Rating:


With our pureguardian™ H4500 Ultrasonic humidifier, you no longer have to settle for the sinus discomfort, dry and irritated skin, respiratory issues and other uncomfortable symptoms when the indoor environment is too dry. The retro-style H4500 humidifier will quietly disperse a healthy micro-fine warm or cool mist into the air. Its unique Silver clean™ technology fights the growth of mold and mildew on the surface of the water tank. Another added benefit, is the H4500 eliminates much of the typical maintenance often required with a humidifier since there are no evaporative wicks or pads to purchase and replace. Other useful features include easy-to-operate manual controls, low water indicator, 2-way mist output and soft blue night light option. The pureguardian™ H4500 features a large 2.4 gallon tank and is suitable for bedrooms, offices and other areas up to 500 square feet.


  • Room coverage: up to 500 square feet
  • Tank capacity: 2.4 gallons
  • Successive humidity hours: up to approximately 120 hours depending on environmental conditions
  • Silver Clean™ Technology on surface of tank: prevents the growth of mold and mildew on the surface of the water tank
  • Successive humidity hours: up to approximately 120 hours depending on environmental conditions
  • Virtually silent, making it ideal for use while sleeping
  • Easy-to-use manual controls
  • Variable mist output: humidity volume may be adjusted based on need by using the adjustment knob on the front panel
  • Multi-directional mist output direction: can broaden mist in two different directions throughout the room
  • Night light option: attractive circular blue light around display panel may be turned on or off
  • Tank empty indicator – when the unit is low on water the Refill LED on the front panel will light up
  • Auto shut-off when tank is empty
  • Power cord storage


It is recommended that you place the product up and not on the floor. Wash out the unit with fresh water using a cleaning brush and soft cloth. Do not use chemicals or detergents. Gently wipe away debris from the filter with a soft cloth. To clean the ultrasonic disks, remove spray spout and use the enclosed cleaning brush to regularly remove build up and spots from this area. White vinegar will help to prevent this build up.

How it Works

The pureguardian™ Ultrasonic H4500 Humidifier uses a metal diaphragm vibrating at an ultrasonic frequency to create water droplets that are expelled out into the room to help maintain the desired humidity level. An Ultrasonic Humidifier is virtually silent when operating.

Product Usage

Please note: In order to maximize the performance it is recommended the unit be placed at least 2 feet off the floor to allow the mist the opportunity to evaporate before hitting the floor and to eliminate the carpeting or wood floor surrounding it from becoming damp.

The following situations could contribute to excessive white dust so are recommended to be avoided:

  • Using water that has been treated by a water softening system could result in an increased incidence of white dust due to the excess sodium in the softened water. Therefore, it is recommended to use water that bypasses the system, bottled, or distilled water.
  • Use of this product with a negative ionizer air purifier or air cleaner with an optional post ionizing function could contribute to an increased collection of dust on surfaces. If this occurs try operating this product without the negative ionizer air purifier or with the optional ionizing function on the air cleaner off.


Technical Specifications

pureguardian™ H4500 Humidifiers
pureguardian™ H4500 Ultrasonic Humidifier
Room Coverage Up to 500 sq. ft.
Tank capacity 2.4 gallons
Humidification Performance 350 cc/hr
Auto shut-off Yes
Mist Output Levels Variable
Weight 8.2 lbs.
Dimensions 10"W x 15"L x 12"H
Warranty 3 years

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Optional pureguardian™ Humidifier Decalcification Filter Cartridge #FLTDC

Shipping Costs*

  • If you have excessive mineral content in your water supply the cartridge will help to prevent the release of minerals (white dust) into the air
  • Recommended to replace every 1000 hours of use or about 260 gallons of water depending on the condition of water you are using
  • Compatible with the following pureguardian™ Humidifier models: H1500, H1600, H2000, H3010 and H4500

Availability: In Stock. Ships out within 2 - 3 days.
The DISCONTINUED: pureguardian™ H4500 Humidifiers is only one of our humidifiers. See how the DISCONTINUED: pureguardian™ H4500 Humidifiers compares to other models in our humidifiers comparison. You can view other models around $1000000000 with very good plus rating on all humidifiers. This page features one of our humidifiers - the DISCONTINUED: pureguardian™ H4500 Humidifiers.