2022 Best Air Purifier for Bacteria and Viruses with Antimicrobial

Everybody knows germ is bad news. Germ is a tiny microorganism of bacteria, viruses, fungi, and protozoa that will cause all kinds of diseases. In this best air purifier for bacteria and viruses post, we will look into ways to deal with germs. We will also be exploring what is the root cause, who is this for and what can be done. Learn more about air cleaner filtration including what's antimicrobial treatment and UV-light technology. At the end of the day, there is bound to be one air purifier that would assist in solving your long-term germ troubles.

How Are Most Germs Spread?

Germs can be spread through sneezing, coughing, breathing, shaking hands, and kissing with a sick person. The person is exposed to germs firsthand when they touched on contaminated everyday objects. Common items including doorknob, pen, cellphone, tabletop, faucet, and remote control. Germs can also spread through sweat, saliva, sexual contact, blood, water, and ingestion. Poor ventilation, dirty air conditioner or HVAC system will help speed up the spread of bacteria and viruses.

Who is this for?

Anyone that is exposed or touches everyday objects filled with germs. Infant and children are more prone to the diseases as they have the tendency of putting their hand into their mouth. Elderly with their weakened immune system against bacteria, and viruses. Sick or recovering patient that is currently suffering from virus attack. Lastly, a person that needs protection against seasonal to contagious viruses.

Quick Summary

Winix HR900 Air Purifier ReviewPureZone 3-in-1 True HEPA Air Purifier ReviewRabbit Air BioGS 2.0 Air Purifier Review
Winix HR900 Air PurifierPureZone 3-in-1 True HEPA Air PurifierRabbit Air BioGS 2.0 SPA-550A Air Purifier
Recommended Room Size
300 sq. ft. (28 m2)200 sq. ft. (19 m2)550 sq. ft. (51 m2)
4.5out of 54out of 54.5out of 5
Amazon Price
** 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.

How Do We Measure?

Antimicrobial/ UV-light The air purifier must have either antimicrobial or UV-light technology to be featured here. Both filtrations with effectively eliminate bacteria and viruses from further growth. Best paired alongside HEPA filter, the overall filtration must work nicely together to ensure no germs will be able to get away.
HEPA filter A critical component in our measurement on how qualified an air purifier is. Bacteria and viruses are all microscopic particles size that can only be captured by a True HEPA filter. What we want from the HEPA filter is to work well alongside antimicrobial and UV-light. All trapped allergens must be killed off inside the filtration.
Room size/ Coverage Necessarily to support and capture a broad range of airborne germs and viruses. The wider the purifying coverage, the bigger room size an air purifier can support. What we would also take into the consideration is the machine overall size, intended target users and of course the price factor.

Winix HR900 pet is always the first one in our mind as it is well-priced, well-equipped and is well-protected against germs. It has wide coverage that is ideal for large room size including living hall and master bedroom. The True HEPA filter coated with antimicrobial stops bypassing viruses from proceeding forward. PlasmaWave technology will create Hydroxyls to neutralize leftover bacteria, odors, and chemicals.

As germs can stay airborne for more than 72 hours, you will need to leave the air purifier running all the time. Luckily Winix HR900 auto and sleep mode allows autonomously purification in the background. Adding all the standard goodies you would find in all Winix models, give this a shot if you want ann all-rounder air purifier.

What's cool:

  • Less than 300 for a 5-stage filtration with PlasmaWave, antimicrobial pre-filter, and True HEPA filter.
  • Extensive 300 sq. ft. coverage supported by strong airflow distribution.
  • Solid AOC carbon filter performance against household chemicals and odors.
  • Auto mode, Sleep mode, built-in timer, and child lock all comes standard.

What's not:

  • Costly annual replacement filter even without any addon.
  • No UV-light technology.
  • Fan noise is slightly loud on max speed.
online price (US)**
±349.00 $$$$/ 7

(annual filter cost ±100-120)


PureZone 3-in-1 True HEPA air purifier is an exceptional germ killer at only fraction of the cost. Still, that doesn't discount the fact that it is handsomely equipped with tons of features. Even more impressively, the 4-stage filtration consists of a True HEPA filter, activated carbon filter, and UV-C Light. Yes, this compact air purifier has an ultraviolet light that will permanently kill bacteria trapped on the HEPA filter.

As one of the best germicidal air purifier that cost less than 100, PureZone 3-in-1 200 sq. ft. capturing range is actually not too bad in capturing household contaminants. Adding a dedicated carbon filter that is genuinely good in dealing with smoke pollutants, there is no reason not to pick this for your bedroom.

What's cool:

  • Cheap to own and maintain.
  • Tabletop friendly size.
  • True HEPA filter that will trap even the finest microorganism.
  • UV-C light will finish off bacteria and virus that is caught on the filter.
  • Dedicated activated carbon filter.

What's not:

  • Lacks autononomus purifying.
  • CADR is below 100 cfm.
  • Small and short filter lifespan.
online price (US)**
±139.99 $$/ 7

(annual filter cost ±40)


A hidden gem in dealing with an airborne germ. Little do people know that Rabbit Air BioGS 2.0 filter is actually pre-coated with an antimicrobial. This help inhibits microorganisms like mold, pollen from reproducing on the HEPA filter. Speaking of HEPA filter, it is excellent with the standard efficiency of 99.97% capturing rate. On top of that, there is a supportive negative ion generator and powerful airflow distribution. Regardless of which version you go for, you will end up with an absolute winner.

Rabbit Air BioGS 2.0 can be more expensive than the rest, but you do save up on the annual filter replacement cost. Features like auto mode, sleep mode, air quality indicator, timer, and remote are all here. Plus there is a 5 years worried-free warranty that will give you peace of mind on its durability.

What's cool:

  • Large room size 550 sq. ft. coverage at 2 air changes per hour.
  • Low annual filter replacement cost.
  • Excellent multi-stage HEPA filtration.
  • Full features including an active filter maintenance status bar.
  • 5 years manufacture warranty.

What's not:

  • Expensive yet CADR is below 200 cfm benchmark.
  • No UV-light technology.
  • Some features are only accessible via the remote control.
online price (US)**
±369.95 $$$$$/ 7

(annual filter cost ±27-53)


GermGuardian AC5250PT is our favorite UV air purifier for bacteria and viruses. Why? It comes with both antimicrobial filter and UV-C light. The comprehensive 5-stage filtration also includes the usual HEPA filter and carbon pre-filter. HEPA filter would trap airborne germs while the Pet Pure treatment inhibits microbes growth. UV-C light is also there to wipe out any bacteria and viruses that are trapped from within.

So the price you paid, you will get a highly dependable tower air purifier that comes with all the practical features. It may not have the most outstanding coverage or the strongest airflow, it still comes with both UV-C and antimicrobial. The 5-stage filtration cramped in a small body itself is enough to win us over.

What's cool:

  • Inexpensive. Less than 100 after discount.
  • 5-stage filtration with True HEPA filter.
  • Pet Pure antimicrobial that inhibits the growth of microorganisms.
  • UV-C light that will eliminate airborne germs.
  • Comes with timer and digital display.

What's not:

  • Small purifying coverage with limited airflow delivery rate.
  • Charcoal pre-filter is not great in dealing with strong odor.
  • Lacks AQ indicator and autonomous purifying.
online price (US)**
±229.99 $$$/ 7

(annual filter cost ±53-80)


Like what you see on AC5250PT but want something way cheaper? In comes the highly portable GermGuardian AC4100 UV air sanitizer. It has low maintenance, extremely compact, and super easy to use. It also comes with a 3-stage filtration with charcoal pre-filter, HEPA filter and of course, the must-have UV-light. After the HEPA filter has successfully trapped the germs, the UV-light will eradicate the bacteria from within. In the end, there is nothing but clean air that gets out.

AC4100 might seem like a poor choice with the limited airflow, in reality, you are actually paying less than 50 dollars for a UV air purifier. The filtration itself might already cost more than that. In short, it's cheap and will kill germs in a small radius.

What's cool:

  • Very cheap for a 4-stage filtration UV air purifier.
  • Compact body that works in vertical and horizontal position.
  • UV-C light technology that works against germs.

What's not:

  • Only uses HEPA-type filter with 99% efficiency.
  • Limited purifying coverage and airflow.
  • Poor odor removal.
  • Plain vanilla unit with no features at all.
online price (US)**
±89.99 $$/ 7

(annual filter cost ±48-65)


GermGuardian AC9200WCA is easily the best air purifier with UV light. It has extensive purifying coverage, very impressive CADR, and a complete 5-stage filtration. The filtration itself is worthy of every single penny you paid. You'll get a True HEPA filter that will capture particles as small as 0.3 microns. A dedicated carbon filter that will remove strong smoke, odor, and chemical fumes. An ionizer that generates negative ions to pull down particles to the filter. Finally, the ultraviolet light that will permanently kill bacteria and germs inside the air purifier.

It's not all rainbow and sunshine with GermGuardian AC9200WCA. The price factor can be a bit intimidating, so is the overall dimension. Out biggest complain is the lack of Auto mode feature that is a big surprise for this segment. Still, if you want the very best HEPA UV air purifier, this is the model to go for.

What's cool:

  • Cater for room size up to 378 sq. ft.
  • Complete 5-stage filtration with True HEPA filter, carbon filter, and ionizer.
  • Overall close to 300 cfm CADR.
  • Powerful UV-C Light that can last throughout the year.

What's not:

  • Cost more than $200 even after the discount.
  • Bulky and heavy.
  • No auto mode and air quality indicator.
online price (US)**
±499.99 $$$$$$/ 7

(annual filter cost ±128-182)



What Is Antimicrobial?

For centuries, antimicrobial act as an agent that inhibit the growth of microorganisms on the applied surfaces. Without the right environment to thrive, bacteria and viruses will slowly die off due to lack of nutrients. In air purifier case, antimicrobial is usually applied as a form of layer protection above the HEPA filter or as a standalone filter. From common flu viruses to the epidemic SARS outbreak, having antimicrobial protection is good for your health. It can greatly reduce the number of bacteria and viruses from flowing into your lungs.

What Are The 4 Types Of Germs?

Bacteria, Viruses, Fungi, and Parasites. These are the 4 types of germs that have their own infectious diseases to plants, animals, and people. Germs can be spread through person to person, animal to person, animals, and mother to an unborn child. Let's dive in deeper.

  • Bacteria are tiny, one-cell organisms that can cause ear infections, tonsillitis, strep throat, urinary tract infections, tuberculosis, and pneumonia. Most bacteria can survive by getting nutrients from their environments and host. Not all bacteria are bad though, there are good ones like Lactobacillus and Bifidobacterium. They live in our intestines and help us digest the food nutrients and convert the leftover to waste. There are also good bacterias used in food, vaccine or medicines production.
  • Viruses are even smaller than bacteria that can cause diseases from common cold (flu), chickenpox, measles to AIDS. A virus needs to be inside a host (plant, animal or human body) or else it will not survive for long. Most viruses are spread person to person, animal or insect so be extra careful if a person is sick.
  • Fungi are multi-celled organisms linked with many skin diseases like ringworm and athlete's foot. They survive by getting off nutrients from plants, animals, and people. There are 4 types of fungi: Chytridiomycota, Zygomycota, Ascomycota, Basidiomycota. They thrive in damp and warm temperature. Most fungi on light exposure will not cause any serious harm to human.
  • Protozoa are also one-cell microorganisms that thrive on high humidity. Most protozoa spread their diseases through water that causes intestinal infections and diarrhea.

How Long Does It Take For Germs To Make You Sick?

Normally it will take 1-3 days to catch the flu. From the minute you are exposed to germs, it can make you fall sick within 24 to 72 hours depending on how strong your immune system is. Early signs of illness include sinus, cough, headache, fever, red eyes, and breathing difficulty. On long-run, it could lead to tonsillitis, cavities, pneumonia and respiratory diseases. Germ viruses can also lead to chickenpox, eczema, measles, and destroy our blood cells. If you are currently suffering from illnesses, pop some antibiotic pills or consult a doctor for proper treatment.

How Fast Can Germs Spread?

On average a sneeze or cough can send around 100,000 germs into the air and can travel up to 6 feet. That's up to 100 miles per hour according to the research at the University of Bristol. The distance and speed germs will vary depending on the occurrence of the sneeze and cough. The higher the number is, the less trajectory force it will be. The germs could remain suspended in the air for weeks until someone inhales to it.

Does Cold Air Kill Germs?

Yes, but it will have to be below freezing cold temperature to kill germs. That way, the membranes inside will break and causes the microorganisms to dry off or die. Since most bacteria and viruses are human pathogens, it will be living inside a warm host. The outside cold temperatures will have little impact on their survival. Most people experience seasonal flu during the winter is due to the lack of outdoor activities. They will stay at home or places packed with people like cinema or shopping mall. People carrying germ diseases will spread the viruses quicker in crowded spaces due to poor ventilation. That's why fresh air is more important than cold air in dealing with airborne germs.

Alternate Ways Of Getting Rid Of Germs In The Air

Air purifier is a great way of clearing out airborne germs, but it is not the only way. Opening curtains and letting the sunshine in is a great way of killing indoor germs. Essential oil like Tea Tree, Peppermint, Lemongrass, Lavender is also a good antibacterial agent. Disinfect and clean items that you touched every day like a doorknob, faucet, phone or table. Never wear shoes indoor as you don't know what have you stepped on to. Take out the trash every day especially those filled with spoiled food or leftover. Keep pets outside as their saliva, feces, and pet hair is filled with germs. Lastly, make sure all ventilation, air cond, and HVAC system are properly maintained.

2022 Best Air Purifier for Germs, Bacteria and Viruses

NoImageAir PurifierOnline Price (Amazon)FiltrationCoverage
1Winix HR900 Air Purifier ReviewWinix HR900 Air Purifier


5-stage300 sq. ft. (28 m2)
2PureZone 3-in-1 True HEPA Air Purifier ReviewPureZone 3-in-1 True HEPA Air Purifier


4-stage200 sq. ft. (19 m2)
3Rabbit Air BioGS 2.0 Air Purifier ReviewRabbit Air BioGS 2.0 SPA-550A Air Purifier


4-stage550 sq. ft. (51 m2)
4GermGuardian AC5250PT Air Purifier ReviewGermGuardian AC5250PT Air Purifier


5-stage180 sq. ft. (17 m2)
5GermGuardian AC4100 Air Purifier ReviewGermGuardian AC4100 Air Purifier


4-stage78 sq. ft. (7 m2)
6GermGuardian AC9200WCA Air Purifier ReviewGermGuardian AC9200WCA Air Purifier


5-stage378 sq. ft. (35 m2)

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.

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