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Back to the Woot-Off!


  • Unlike other humidifiers that grow slimy mold and mildew, the Guardian Technologies PureGuardian 120-Hour Ultrasonic Humidifier uses Silver Clean technology to fight the growth of mold and mildew on the surface of the water tank
  • 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
  • Silver Clean technology: The water tank has been treated with a fungistatic agent to protect it from fungal and mold growth
  • Ultrasonic humidifier is virtually silent when operating, making it ideal to have on while you sleep
  • Equipped with the option for warm or cool mist
  • Low water indicator light lets you know when it’s time to refill the water tank
  • Soft glow night light that turns on and off
  • No Added Costs: No evaporating pads, filters or wicks to clean or replace
  • Large Capacity Water Tank: Up to 120-hour run time on one tank fill, 2.4 gallon tank capacity
  • High-Output Nozzle: Broadens mist in two directions throughout the room

Shipping Note: Eligible for shipping to all 50 states

Warranty: 90 Day Woot Limited Warranty


Construction: Plastic
Power: AC120V, 60Hz
Power Consumption: 140W (40W on cold humidification)
Special Features: Silver Clean Technology
Humidity Range: 25-90%
Maximum Humidity Capacity: About 350 cc/hr (at highest setting and warm humidification)
Tank Capacity: 2.4 gallons
Successful Humidification Hours: Up to 120-hours (depending on atmospheric conditions)
Dimensions: 15" L x 8.9" W x 11.5" H
Weight: 8.2 pounds (with empty water tank)


In the box:

(1) PureGuardian R4500 120-Hour Ultrasonic Humidifier includes:

  • Tank
  • Body
  • Tank Lid
  • Spray Spout
  • Cleaning Brush


Sales Stats

Speed to First Woot:
6m 57.111s
First Sucker:
Last Wooter to Woot:

Purchaser Experience

  • 0% first woot
  • 0% second woot
  • 19% < 10 woots
  • 33% < 25 woots
  • 48% ≥ 25 woots

Purchaser Seniority

  • 0% joined today
  • 0% one week old
  • 4% one month old
  • 4% one year old
  • 93% > one year old

Quantity Breakdown

  • 93% bought 1
  • 7% bought 2
  • 0% bought 3

Percentage of Sales Per Hour

12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11

Woots by State

zero wooters wootinglots of wooters wooting

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PureGuardian Ultrasonic Humidifier
$39.99 Sold Out Home & Garden
$39.99 USD false 1 Retail EA
1 3
Woot! Home.Woot
4121 International Pkwy Carollton TX 75007 U.S.A.