Clarifion Negative Ion Generator GL-139 Review In 2022: Pluggable Ionizer!

Looking for a small, easy to use, pluggable ionizer that you can just leave unattended? Clarifion Negative Ion Generator GL-139 is your answer. A filter free ionizer that diffuses negative ions into the air and causes airborne pollutants to fall. So how effective is this tiny little device? Is ionization a safe purification method and what are its flaws? Should you consider this or a pluggable UV air sanitizer? Find out more in our Clarifion Negative Ion Generator GL-139 review.
online price (US)**
±39.99 $/ 7

(annual filter cost ±0)

** MRSP (Manufacturer's Suggested Retail Price)/ RSP (Retail selling price) is accurate at the time of posting.
^ Annual filter cost is calculated based on filter price and 12 hours of usage. Pricing could vary depending on air quality, usage frequency, and speed.
` The indicated online price guides as follows: $ = under $50, $$ = $50-100, $$$ = $101-200, $$$$ = 201-300, $$$$$ = $301-400, $$$$$$ = 401-500, $$$$$$$ = over $500.

Clarifion Negative Ion Generator GL-139 Specification

ProductClarifion Negative Ion Generator GL-139
4 x 6 x 2.9 in
(10.2 x 15.2 x 7.4 cm)
Weight0.3 lb (0.1 kg)
Coverage (up to)150 sq. ft. (14 m2)
Airflow speed
Dust free (CADR)
Pollen free (CADR)
Smoke free (CADR)
Humidifying(H) speed
- Lifespan
- Replacement cost ($)
HEPA filter
- Lifespan
- Replacement cost ($)
Carbon filter
- Lifespan
- Replacement cost ($)
Ionizer/ TechnologiesNegative Ion Generator
UV-light/ PCO
Other filter
All-in-one filter
- Lifespan
- Replacement cost ($)
Optional/ Addon
Noise levelUltra Quiet
Power usage level<1 W
Timer/ Scheduler
Auto mode
Air qualityAQ indicator
Filter change indicator
More color options
Wi-Fi/ BTBluetooth
Remote control
Child lock
Warranty1 year
Email/ Phone support

Key Features

  • Plug in negative ion generator with blue LED light
  • Filterless Ionization Technology: Up to 10 Million pcs/cm^3 of Negative Ion-Output
  • LED brightness 10-20 LUX
  • Ozone free
  • Low noise and low energy consumption
  • Voltage AC120V 60hz
  • Compatible with moving vehicle
  • CARB G-20-016 Certification
  • 1 year limited warranty

Design And Usability

Clarifion Negative Ion Generator GL-139 dimension
4 x 6 x 2.9 in
(10.2 x 15.2 x 7.4 cm)
Clarifion Negative Ion Generator GL-139 weight
0.3 lb (0.1 kg)

Clarifion GL-139 is a great compact negative ion generator that can clean your air for less than 50 bucks. A clean and simple pluggable device that has the aesthetic and performance. At only 4 x 6 x 2.9 inches size and light 4.8 lb weight, you can fit it anywhere in the room without being obstructive. If you are a frequent traveler like me, GL-139 fits in a backpack or luggage with relative ease.

Clarifion GL-139 negative ion generator is very easy to use and install. Just find a wall socket, plug it in and you’re on. The light blue LED light will let you know the device is working and you can leave it be. No confusing controls, fan speed adjustment, or timer needed in the setup. Just make sure you do not impede the airflow or place it close to flammable materials.

As for the build quality and durability, Clarifion GL-139 pluggable negative ion generator comes with a standard 1-year warranty that covers all manufacturing defects. It is CARB Certification (G-20-016) thus will not produce harmful ozone or chemical byproduct. You can safely leave it running all day without having to worry about fire hazard risk.

Airflow, Coverage, And CADR

Clarifion Negative Ion Generator GL-139 coverage
Purifying coverage
150 sq. ft. (14 m2)
Clarifion Negative Ion Generator GL-139 fanspeed

Clarifion GL-139 is a pluggable negative ion generator so there is a limited air purification performance. At a small 150 square feet of purifying coverage, it is usable but you will need multiple units to cover an entire room. We recommended placing Clarifion GL-139 negative ion generator in the bedroom, bathroom, staircase, basement, or storage room that has very little space to spare. No CADR here given GL-139 is a filterless device that does not rely on filters to clean the air.

Recommended Read

Filters And Performance

Clarifion GL-139 negative ion generator can help to keep the air fresh and clean by removing airborne dust, smog, smoke, pet dander, and germs. The air ionization technology generates up to 10 million pcs/ cm^3 of Negative ions output. The diffused ions will negatively charge airborne pollutants ions causing them to bond. The bonded ions will then fall on a surface due to the increased weight allowing you to swept or vacuum away the contaminants. The key difference between an air ionizer and an air purifier is the latter relies on a fan to pull the air in through a series of filters to capture. It is very efficient but costly to run as the filters require replacing.

Noise And Energy Usage

Clarifion Negative Ion Generator GL-139 noise level
Noise level
Ultra Quiet
Clarifion Negative Ion Generator GL-139 power consumption
Power consumption
<1 W
Being a filter free device with no motor fan, Clarifion GL-139 Negative Ion Generator has a super low noise operation. Just plug it at your desire location and let it do its thing. After some time, you will barely remember its existence. Supporting the whisper-quiet operation is the AC120V low power output at less than 1 watts of electricity per hour. Compared with other home appliances, running Clarifion GL-139 all-day will not have an impact on your electricity bill. The running cost is around $0.11 dollars a month or a low $1.3 dollars yearly with 24 hours of runtime.
Noise TypeDecibels
Clarifion Negative Ion Generator GL-139Ultra Quiet
Breathing10 dB
Rustling leaves20 dB
Whispering/ Quiet library30 dB
Light rainfall40-50 dB
Conversation50-60 dB
Vacuum cleaner/ Hair dryer/ Washing machine65-80 dB
City traffic80-90 dB

Pricing And Maintainence Cost

Clarifion Negative Ion Generator GL-139 MRSP/ RSP
+- 39.99
Clarifion Negative Ion Generator GL-139 annual filter replacement cost
Annual Filter Cost
+- 0
^ Replacement filters/ estimated cost
At around 40+ for a single unit Clarifion GL-139, it is well worth the price considering its offering. The compact form is best suited for those that need limited air cleaning in the bedroom, bathroom, hallway, kitchen, living room, staircase, office, and garage at a cost-friendly measurement. Another good thing about Negative Ion Generator is the filterless setup that does not need replacing. No expensive filtration or light bulb changes for the rest of the ownership. Still, we recommend getting multiple units to cover the entire home due to the limited purifying coverage.
Clarifion GL-139 Negative Ion Generator is available for purchase at Amazon and the official website. Both sites offered discounted prices with great bundled deals if you buy more than 1 unit. You can see significant savings with at least a 4-in-1 bundled deal. For the first time buyer, we would advise our reader to go with a single unit first as a trial. Test it out and if they are happy with the purchase, opt for the greater bundled deal.

Clarifion Negative Ion Generator GL-139 VS The Challengers

GermGuardian GG1100 Elite Review

GermGuardian GG1100W/ GG1100B

Instead of an ionizer, try this pluggable air sanitizer that uses UV-light filtration to kill bacteria and viruses. Ultraviolet light is more effective in eliminating germs but you will have to replace the light bulb.
GermGuardian GG1000 Pluggable Air Purifier & Sanitizer Review

GermGuardian GG1000 Pluggable

The older version to GG1100 and it is roughly the same price as Clarifion. Go with this if you prefer germ killing UV-light over a negative ion generator.

Final Thoughts On Clarifion Negative Ion Generator GL-139

Clarifion Negative Ion Generator GL-139 is a good filterless air cleaner that is well received by buyers. 73% of the reviewers in Amazon gave it 4 to 5 ratings praise its form factor, effectiveness in removing airborne allergens, and silent operation. Most of them believe it helps reduce their asthma from triggering and relieves nasal congestion. Many also praise Clarifion GL-139 affordable price point and maintenance-free setup. The 13% negative feedbacks received either complained about a faulty unit or do not believe in ionization technology. With the pros overwhelming outdo the cons, Clarifion GL-139 would be a sensible buy.


  • Sleek, compact form that is super easy to use and install. Just plug and play.
  • Negative ion generator produces no ozone and works well with an air purifier.
  • No maintenance or replacement filter ever needed.
  • Ionization purification produces zero noise and uses less than 1 watt of electricity.


  • Does not actually remove airborne particles. Charged particles will fall to the ground due to the increased weight and can be stirred back up.
  • For close range purification at around 150 square feet.
  • Not effective against chemical and smoke particles.
Clarifion Negative Ion Generator GL-139 Review

Max Fernandez

A loving father and a dedicated reviewer for airfuji.com with more than 1000 air purifiers under his belt. Max Fernandez is also one of the million patients currently suffering from asthma. Feel free to nudge him if you have any questions.
How Can I Help You Today?

I need air purifier that is to deal with for to be placed in the for with


Other Air Purifiers