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GreenTech GT50 Plug-In Air Purifier Review

Overall Rating:
4.0 out of 5 stars
GreenTech GT50Click to Enlarge

GreenTech GT50

The GT50 from GreenTech is possibly the only plug-in air purifier that will not just neutralize but also kill bacteria that can pose a potential danger to your health. It has been designed specifically for small spaces up to 50 square feet in size. This makes it perfect for places like the bathroom, kitchen area, laundry room, and pet areas or anywhere-else that harmful spores can get into your lungs.

Review Details

Previously unavailable to the public, the GreenTech GT50 is the only plug-in air purifier that allows the user to control the amount of output. It works by creating negative ionization in conjunction with power activated oxygen (ozone), which means the spores that cause potentially dangerous viruses are killed on the spot (think MRSA, E-coli, Candida, Salmonella and many more). In fact, this little unit will kill E-coli 3000 times faster than any disinfectant on the market today!

Compliant with US voltage requirements and compact enough to fit into the palm of your hand, the GT50 is a must for the discerning traveler who wishes to make sure the air they breathe is clean no matter where they’re staying.

What We Liked

  • Output Control at your Finger-tips
    The GT50 is the only plug-in air purifier on the market that will allow you to control the output, making it perfect for all manner of 50 foot square spaces such as laundry rooms, kitchen, pet areas and even the work-place.
  • Ultra Quiet
    This air purifier is so quiet you will have no idea it’s working to keep the air you breathe free of harmful bacteria.
  • Compact and Attractive
    The GT50 is modern and sleek in design and won’t look out of place anywhere in the home or office. Small enough to fit into the palm of your hand, it can travel with you anywhere.
  • Effective Air Purification
    GreenTech has managed to build a unit that will kill all manner of potentially hazardous viral spores. In fact, it will kill E-coli 3000 times faster than any disinfectant.

What We Didn't Like

  • Ozone Odor
    The GT50 does use ozone as part of the air purification process and some have noted they can smell this. However, the manufacturer states that 0.05ppm is the maximum this unit will emit.
  • Maintenance
    GreenTech has built the GT50 so there is never a need to buy replacement filters. There are mixed reviews on how easy it is to clean but, there are detailed instructions included.


For an air purifier that plugs into your power outlet, uses less electricity than the average night-light bulb and fits into the palm of your hand, the GT50 cannot come more highly recommended. The mere fact it will kill potentially harmful viral spores such as E-coli 3000 times faster than a disinfectant sells this unit on its own. In our opinion, it’s not in the least bit over priced and is, in fact, an excellent buy.

Review by AirReflect ©
Last modified: April 28, 2013 (Prices are updated daily)
GreenTech GT50
Dimensions (L x W x H):
2.5 x 3.5 x 5 inches
0.3 lbs
Power Supply:
110 Volts, 60 Hz
7 Watt
Suitable for treating:
Asthma, Allergies, Mold, Odor, Bacteria, Viruses
50 square feet
Adjustable Fan Speed:
Ozone Emission:
Digital Controls:
Filter Change Alert:
Energy Star Certified:
AHAM Certified:
1 year

GreenTech GT50 Prices

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