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7 Best Plug In Air Purifier In 2021: Safe And Work!

Dirty air can appear in any corner of the home yet there are places that you just can’t fit a full-sized air cleaner in. A plug in air purifier would be the ideal solution in providing clean air in a confined space. Learn how does a pluggable air purifier works, what allergens can it remove, and how it can protect you from an allergic reaction or asthma attack. We will also compare the many different types in the market and review them with the pros/cons. At the end of the post, you will have a clear mindset on which one you should invest in one.

Who is this for?

Everyone from children, adults, elderly would benefit from using a plug-in air purifier. It is designed to use in tight spaces like a dorm or shared room where there is no space left to fit in a full-size air purifier. It is also ideal for those that already have an air purifier at home and won't mind the extra filtration against airborne allergens.

2021 Best Plug In Air Purifiers

NoImageAir PurifierOnline Price (Amazon)FiltrationCoverageScore
1GermGuardian GG1000 Pluggable Air Purifier & SanitizerGermGuardian GG1000 Pluggable Air Purifier

$

CHECK PRICE
1-stage56 sq. ft. (5 m2)3.5
2GermGuardian GG1100W Elite Pluggable UV-C SanitizerGermGuardian GG1100W/ GG1100B Air Purifier

$

CHECK PRICE
1-stage56 sq. ft. (5 m2)3.5
3Clarifion GL-139 Negative Ion GeneratorClarifion Negative Ion Generator GL-139 Air Purifier

$

CHECK PRICE
1-stage150 sq. ft. (14 m2)3.5
4Hamilton Beach TrueAir Plug-Mount Odor EliminatorHamilton Beach TrueAir Plug-Mount Odor Eliminator Air Purifier

$

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1-stage64 sq. ft. (6 m2)3.5
5HAPHID Negative Ion Generator Plug In Air PurifierHAPHID Plug In Negative Ion Generator Air Purifier

$

CHECK PRICE
1-stage3.5
6Belita Amy Plug In Air PurifierBelita Amy Plug In Air Purifier

$

CHECK PRICE
1-stage431-646 sq. ft. (431-646 m2)3.5
7HomeZens Portable Plug in Air PurifierHomeZens Portable Plug in Air Purifier

$

CHECK PRICE
1-stage107 sq. ft. (10 m2)3.5

How Do We Measure?

There are not many good, pluggable air purifier out there that is effective, safe, and energy-efficient. Trust us as we are in the air cleaning industry for more than 30 years. To help you spot a good one that does not produce harmful byproducts, here's what you need to look for in a plug in air purifier.

  • Design and portability - Pick a model that is easy with the eyes as you will be looking at it for years to come. Make sure it will fit your wall plug well as some models are known to be overly bulky and heavy.
  • Technologies - Your options are negative ion generator, carbon filtration, and UV sterilizer. Each has its pros and cons so pick the type that suits you best.
  • Filtration performance - The better the output, the more pollutants the pluggable machine can remove. Only compare apple to apple e.g. ionizer with an ionizer.
  • Pricing - No a big deal if you are getting a single unit as most plug-in air purifiers will not cost more than 50 dollars. If you're getting multiple units for your home, look for bundled deals that will save you a ton.
  • No harmful byproducts - Never go with a model that emits ozone or chemicals as it will do more harm than good. Avoid an ozone generator or ozonator regardless of how adjustable it is.
  • Warranty - Never settle with a model that does not offer at least a 1-year warranty from the manufacturer.

That are many reasons why this GermGuardian GG1000 plug in UV-C sanitizer would be the perfect one for you. Its hour shape design is very compact at 3.2 inches in diameter and 7.5 inches in height. The lightweight 1.13 pounds fits well in a backpack that you can bring it around during work or a trip. It is well-priced given it is an older model with the newer replacement already out. It is also very well-built with many owners still utilizing it after years of ownership.

As a plug-and-play model, GermGuardian GG1000 is very easy to use with no controls to fiddle around with. The only thing you'll need is a wall socket without any extension or transformers. Just plug it in and leave it for months until there is a need to replace the light bulb. The UV purification works anonymously in the background without generating any sudden noise. The 3.5 watts power usage is energy efficient that will not burden you on the utility bill.

Into GermGuardian GG1100 specification:

  • Main filtration - UV-C light technology with Titanium Dioxide
  • Weight - 1.13 lb
  • Chemical-free - Yes
  • Ozone-free - Yes
  • Warranty - 1-year

Powering GermGuardian GG1000 plug in air purifier is the decade own UV-C light technology. It uses ultraviolet radiation to kill mold, germs, bacteria, and viruses in the air including influenza, staph, rhinovirus. No chance of the microbes spreading and causing harm to our body. It can also remove light smoke and odor without producing any unwanted byproducts. At a modest 56 square feet coverage, GermGuardian GG1000 UV sanitizer is ideal for small room sizes like washroom, kitchen, basement with poor ventilation. You can place it near a litter box or garage to help contain the smell.

GermGuardian GG1000 inherit all the downsides with a plug in air purifier. It is not great in removing large particles in the air e.g. dust, hair, and lint. The small UV coverage means multiple units are needed just to filter the air in a room. Lastly, the UV light bulb requires replacing every quarterly or 10,000 hours of run time to maintain optimal performance. That's just how the way it is.

In short: World's most popular UV plug-in air purifier with proven track records in performance and reliability. You can't go wrong with this model.

MRSP/ RSP**
± 59.99 p
     Annual filter ^    
± 15 - 30 p
 Online price*
$
CHECK LATEST AMAZON PRICE

The newer the better. GermGuardian GG1100 Elite Plug in UV-C Sanitizer is the updated version that comes with a USB charging port. It can clean the indoor air and charge your mobile device simultaneously. At a boxy 3.5 inches depth, 6.75 inches height, and a 0.7 pounds weight, it fits well on most wall sockets and you can easily pack in your baggage during travel. Build quality as exceptional with no signs of off-gassing despite it cost less than 40 dollars.

Available in 2 color options (black & white), GermGuardian GG1100 Elite comes with a nice color ring that illuminates once you plug it into a wall socket. There are no controls to tinker with as this is essentially a plug-and-play model. Without a big fan motor, GermGuardian GG1100 will run silently and efficiently with consistent power output. The only thing you need to make it is not placed next to flammable objects, insecticides, and air fresheners.

Moving to GermGuardian GG1100 specification:

  • Main filtration - Negative ion generator
  • Weight - 0.7 lb
  • Chemical-free - Yes
  • Ozone-free - Yes
  • Warranty - 1-year

GermGuardian GG1100 Elite UV-C air sanitizer is targeted for small rooms at 56 square footage of coverage. Emitting a broad wavelength spectrum between 200 to 280 nm, the UV-C light technology with Titanium Dioxide will effectively eliminate airborne germs and viral viruses such as influenza, staph, rhinovirus. It will also reduce volatile organic compounds and light odor caused by mold, mildew, and other fungi. Best of all, GermGuardian GG1100 Elite does not emit ozone that can irritate the lungs. Ideal for children's bedroom, dining room, kitchen, bathroom (dry), laundry room, or any room that reeks.

Like the previous generation, GermGuardian GG1100W only comes with a limited 56 square footage of sanitization. Far less than a desktop air purifier that would typically cover. You also have to replace the UV bulb every 6 to 12 months, unlike an ionizer. It is also not great in filtering dust, debris, and other PM10 particles. That said, all the drawbacks are expected and will not hinder day-to-day use.

In short: The latest UV plug-in air purifier from GermGuardian that silently remove airborne allergens in the background. Come with a nice glowing ring and the ever-useful USB charging port.

MRSP/ RSP**
± 39.99 p
     Annual filter ^    
± 15 - 30 p
 Online price*
$
CHECK LATEST AMAZON PRICE

An affordable, sleek, compact negative ion generator that promotes clean air without generating ozone. Clarifion GL-139 is the go-to plug in air purifier to support the existing HEPA air cleaning machine. At only 4 x 6 x 2.9 inches size and light 4.8 lb weight, it is travel-friendly and you can bring it anywhere you go or just leave it at a spot untouched. The durability is exceptional as our units have been running non-stop for years without fail. Just make sure not to place it close to flammable items like an air freshener.

Clarifion GL-139 is easy to install with a zero learning curve. You only need to find a wall socket, plug it in, and you're done. Since there is no noise generated, the glowing blue LED light is a good indication that the device is running and functioning properly. You can pretty much ignore it at this point even when you're away from work or outstation. The mild energy usage (< 1 watt) will further complement its long-term usability.

Jumping into the specification:

  • Main filtration - Negative ion generator
  • Weight - 4.8 oz
  • Chemical-free - Yes
  • Ozone-free - Yes
  • Warranty - 1-year

Powering Clarifion pluggable air purifier is an ionization technology that diffuses up to 10 million pcs/ cm^3 of negative ions. The negative ions will charge and bond with positive ions pollutants in the air such as dust mite, pet dander, mold, and pollen. The bonded ions will fall due to the increased weight thus reducing the risk of you breathing in the airborne pollutants. Since the ionizer is filter-free and reusable, there is no recurring cost or upkeeping ever needed. Clarifion is also California Air Resources Board (CARB) certified (G-20-016) to be ozone and chemical safe. You can safely use it in the children's bedroom, dining room, pet area, stairway, living room, without having a negative impact on your health.

As a plug in negative ion generator air purifier, Clarifion GL-139 does come with a few drawbacks. First, it does not actually remove airborne contaminants like a conventional HEPA air purifier. The fallen contaminants will adhere to the mat, wall, or furniture and can be stirred back up in the air when disturbed. You will need to perform housing cleaning to permanently get rid of the pollutants. It is also less effective against smoke particles and chemical fumes due to its short purification coverage. If you understand the common limitation, Clarifion GL-139 would be a good addition to reduce the bad air in your home.

In short: A high output negative ion generator capable of reducing allergens, smoke, and odor in the air. Widely available in a bundled deal.

MRSP/ RSP**
± 39.99 p
     Annual filter ^    
± 0 p
 Online price*
$
CHECK LATEST AMAZON PRICE

The only specialized pluggable carbon air purifier that deals with household odor. Hamilton Beach TrueAir Plug-Mount Odor Eliminator is a highly popular product with close to 8,000 ratings on Amazon. It is the ideal home gift for smokers due to its low price and practicality. At a compact 6.5 inches height, 5.2 inches width, and 3.74 inches depth, it fits seamlessly in any home, apartment, studio, dorm, or hotel when you're on a road trip. Build quality is solid with no signs of leakage or uneven gaps.

Hamilton Beach Plug-Mount Odor Eliminator works straight out of the box with a single on/ off switch. It is compatible with a U.S. wall outlet with standard 110 voltage output. The only requirement is to replace the carbon filter sheet every 3 months for optimal performance. There is a red filter replacement indicator up front that lets you know it is time to change the filter. Depending on the variant, it may comes bundled with a night light or air freshener with Green Meadow Scent Cartridge. Skip the air freshener and go with the night light variant if you intend to use it in a children's room for added security.

Moving on to the key specification:

  • Main filtration - Carbon filter
  • Weight - 1.1 lb
  • Chemical-free - Yes
  • Ozone-free - Yes
  • Warranty - 1-year

Mechanical filtration at its finest. The quiet and efficient fan will pull in surrounding odors inside Hamilton Beach TrueAir filtration. Through adsorption, the carbon filter will neutralize common odors from tobacco, pet, cooking, stinky bathroom, and trash bin. Covering a 64 square footage radius, the purification cycle will continue to bring fresh air back into the room as long as Hamilton Beach TrueAir Plug-Mount Odor Eliminator is kept running. No harmful byproducts are created during the process.

Hamilton Beach TrueAir Plug-Mount is a niche product that is not meant for everyone. It is particularly good at trapping cigarette smoke and odor but cannot handle non-smoke particles like dust. The carbon filter also requires replacing every 3 months which can be troublesome let alone the incurred cost. The air cleaning coverage is also very limited but that's nothing new with a pluggable air cleaner.

In short: A highly effective odor eliminator that uses a carbon sheet to absorb toxic gases and odor. Works best near pet area, smoking spot, trash bin, or dry washroom.

MRSP/ RSP**
± 39.99 p
     Annual filter ^    
± 15 - 30 p
 Online price*
$
CHECK LATEST AMAZON PRICE

The filterless, mobile plug-in ionizer that no one talks about. HAPHID Negative Ion Generator is a welcome addition to the rather limited options in the market. It shares all the characteristics of a good plug-in air purifier yet retaining its compactness and portability. Right at the bottom, there are 4 carbon fiber brush heads that can help filter smoke and odor. While we prefer the cleaner design in GermGuardian, you will barely notice its existence after using it for a couple of days.

HAPHID is a worry-free plug in air purifier that you never have to pay any attention to. Just plug it into a standard U.S. wall socket and you're good to go. Ideal for bedside use, small offices cubicle, baby diaper changing room, and hallway. The ionization will kick start automatically and the power/ working indicator lamp will light up letting you know everything is in working order. There is no upkeeping needed or expensive filters to replace. Not now, not ever.

Moving on to HAPHID specification:

  • Main filtration - Negative ion generator
  • Weight - 7.8 oz
  • Chemical-free - Yes
  • Ozone-free - Yes
  • Warranty - 1-year

HAPHID works like every other negative ion pluggable air purifier in the market. It safely and quietly produces 32 million natural anions that charge oxygen ions in the air. The charged ions will drop from the increased weight leaving the indoor air cleaner and fresher. You will breathe and sleep better with HAPHID running in the background. Negative ions will also help boost metabolism and immunity via the increased oxygen in the blood. Not bad for a tiny device that costs no more than a fine meal.

The biggest setback for the HAPHID Plug-in air purifier is the limited cleaning output. It has a small cleaning range and does not stop mold, mildew, and other microorganisms' growth. It is also less effective than against chemical fumes and may not help much if a person has severe allergies. We would recommend using HAPHID on top of the existing HEPA air purifier for a more well-rounded filtration.

In short: If you're not into the mainstream brand, this less known pluggable negative ion generator will provide fresh air exactly as it should.

MRSP/ RSP**
± 49.99 p
     Annual filter ^    
± 0 p
 Online price*
$
CHECK LATEST AMAZON PRICE

Live a carefree life with Belita Amy plug in air purifier. A mini device that can provide natural, forest-like fresh air anywhere you go. Comes in a greeny, leafy theme, its small body frame and lightweight body make it the perfect travel companion. It will fit in nicely in places such as the bedside, hallway, bathroom, kitchen, study room, and garage with limited space. You can bring it along during travel especially in places with high pollution. The durable ABS material will withstand some rough use and outlast the given 12-month warranty period.

Belita Amy is a no-fuss device that requires no prior knowledge of an air purifier. Simply plug it into a wall socket and it will work immediately in providing fresh air. There is no noise, no ozone, no chemical, and no radiation to contend with. You do not even have to maintain it since it is 100% filterless. Just leave the pluggable air purifier to perform its ionization while you go on with your daily life. The low-watt, energy-saving operation will not give you a shock at the end of the month.

Here is Belita Amy key specification:

  • Main filtration - Negative ion generator
  • Weight - 3.31 oz
  • Chemical-free - Yes
  • Ozone-free - Yes
  • Warranty - 1-year

How an air ionizer work is simple. The device intelligently and silently emits 32 million negatively charged ions per second. The negative ions will bond with other pollutants in the air making them heavier thus will fall to the surface. Ionizer will work on pathogens and odor coming from the toilet, pet, cooking, and second-hand smoke. The only caveat is that you need to perform sweeping or vacuuming to remove the pollutants once and for all.

Belita Amy design might not be everyone's cup of tea, it is the limited range and performance that could be the stumbling block. The fallen particles will adhere around the house instead of being trapped in the filter. You will need to perform regular vacuuming to remove the stuck particles on the wall, upholstery, bed, cabinet, or floor. Unless you have very limited space in your home, a regular HEPA air purifier would be the better bet.

In short: Ignore the unorthodox design, this negative ions generator will safely clean your air without releasing any harmful ozone.

MRSP/ RSP**
± 19.99 p
     Annual filter ^    
± 0 p
 Online price*
$
CHECK LATEST AMAZON PRICE

A small but distinctive device that can provide a healthier living environment for you and your baby. HomeZens is a Plug in UV air purifier that cleanses and disinfects your indoor air. Its slim 3.5 x 7.5 x 3 inches dimension houses a functional built-in turbine cycle with a 180° rotatable body. While the form factor is not the best for travel, it is fully sealed and protected from ozone or radiation leakage. You can safely use it in the children's room or next to the bedside without having to worry about harmful substances.

Usability will never be an issue with HomeZens plug in air purifier. Find a wall socket, plug it in, adjust the right angle via its 180° rotatable body, and off you go. The low power usage light will run safely and quietly non-stop until the day you unplug it for UV bulb replacement. We have more than 4 units running 24x7 in the house yet our monthly electricity bill remains steady without any spike. A good testament to its energy-efficiency.

Into the specification:

  • Main filtration - UV light technology
  • Weight - 12 oz
  • Chemical-free - Yes
  • Ozone-free - Yes
  • Warranty - 1-year

Powered by a UV-C Sterilization, HomeZens plug in air purifier forces nearby air inside its chamber. Through germicidal irradiation, ultraviolet light will kill or deactivate up to 99.9% of germs, bacteria, and viruses including H1N1. The microorganisms will remain dead or dormant without the ability to reproduce. The photocatalyst decomposition will help decomposes and removes odors caused by mold, bacteria, pets, cooking, and chemical like formaldehyde. Everyone in the household will enjoy breathing healthy, fresh air with just2 hours of run time.

HomeZens is not a direct replacement for a conventional HEPA air purifier. You will need multiple units just to cover an entire room and even then the filtration is not as comprehensive. The UV light radiation also needs few minutes to eliminate large particles and the duration will only increase as the light intensity dropped. You will have to replace the light bulb that can be annoying when you have more than 1 unit at home. Then again, having HomeZens around is better than none. It will be compatible with the existing or future air purifier that you intend to purchase.

In short: Another affordable, pluggable UV air purifier that is excellent at eliminating germs and bacteria in a confined area.

MRSP/ RSP**
± 39.98 p
     Annual filter ^    
± 10 - 20 p
 Online price*
$
CHECK LATEST AMAZON PRICE
** MRSP (Manufacturer's Suggested Retail Price)/ RSP (Retail selling price) is provided by cleanairprice.com. 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.
BACK TO TABLE

 

Do Plug-in Air Purifiers Work?

Plug-in air purifiers do work in cleaning the air despite their compact size. It will remove different types of airborne pollutants in a small area including germs, bacteria, mold, and odor. To get the most out of your plug-in air purifier, keep it clean and make sure there is no dust clogging the air inlet and outlet. Also, keep it away from flammable and other pluggable devices like an air freshener that is known to disrupt the airflow circulation. Do not place it behind a shelf, table, curtain, or sofa to avoid airflow obstruction. More importantly, keep all windows closed and leave it running even when you're away to reduce the number of airborne contaminants building up.

Benefits Of Plug-in Air Purifiers

Clean air is essential to our health and you can achieve that with this little helper. Here are the perks of owning a plug-in air purifier:

  • Easy to use - Plug-in air purifiers require no learning curve, no assembling, no adjustment, and no maintenance. It is fundamentally a plug and play device.
  • Economical – Plug-in air purifiers are cost-effective with no expensive filter replacement to worry about. It uses very little energy under 10 watts per hour. A great stepping stone before you invest in a bigger, full-size air purifier.
  • Space saving design - Unlike a regular air purifier that can be obtrusive, plug-in purifiers are plugged into the wall power outlet so it will never get in the way. Ideal for small homes with children and pets.
  • Travel-friendly - Enjoy clean air wherever you go. Plug in air purifier portable size is perfect to bring along during work or travel. You can fit it in a backpack, laptop bag, luggage, purse, RV with ease.

Downsides Of Plug-in Air Purifiers (VS HEPA Air Cleaner)

There are pros and cons of owning a plug in purifier. Here are the drawbacks that should you expect with this tiny device:

  • Less effective - It's no secret that the absence of large mechanical filters will hamper the filtration efficiency. A HEPA air purifier can fit in multiple filters with a bigger surface area so more pollutants can be captured at one go.
  • Limited coverage - Plug in purifiers are only meant for small room sizes typically under 100 square footage. It also takes a long time to remove airborne particles like dust, mold, pollen, smoke, and pet dander. Compared with a standard HEPA purifier that can swiftly trap and clean the air of more than 200 square footage.
  • Ozone - Buyers beware. There are quite a few portable ozone generators that mask themselves as plug-in purifiers. These models do not pass California Prop 65 regulation and should be avoided at all costs.
References

Ultraviolet

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.