bacteria and viruses

Best Air Purifier for Bacteria and Viruses | How to Kill Germs

Learn how the best air purifiers for bacteria and viruses work to kill germs and help keep your home safe from airborne viruses such as the flu, common colds, coronavirus, and more. As flu season progresses and the coronavirus spreads, it is essential to reduce bacteria and germs from the air in your home and office. Whether you are trying to protect your children or clean the air in a hospital room, these air purifiers will help get the job done.

>> Important note: We have selected the IQAir HealthPro Plus as the best-performing air purifier for bacteria and viruses. Unfortunately, due to increased demand from COVID 19 and IQAir’s support of Wuhan, China hospitals, this air purifier has recently been sold out on Amazon. Luckily, IQAir has two models that are also effective for bacteria and viruses. If the HealthPro Plus is sold out, feel free to check out IQAir’s Medical-Grade HealthPro Compact and Medical-Grade GC Multigas. Also, check out the following article regarding IQAir’s efforts to assist hospitals battling the coronavirus: IQAir supports hospitals treating ongoing coronavirus outbreak.To learn more about the coronavirus outbreak and how you can protect yourself and those around you, please visit the CDC.

Best Air Purifier for Germs, Bacteria, and Viruses Comparison Chart

★ Best Value ★

TruSens Air Purifier
Click to See Prices
  • Capture Bacteria and Viruses
  • Improve sleeping
  • Great Customer Reviews
  • Affordable

$ Best Price $

GermGuardian Air Purifier
Click to See Prices
  • Capture Bacteria and Viruses
  • Improve sleeping
  • Great Customer Reviews
  • Affordable

★ Best Performance ★

IQAir HealthPro Plus Air Purifier
Click to See Prices
  • Kills Bacteria and Viruses
  • 100X more effective
  • Exceptional Performance
  • Hyper HEPA Filter
PureZone 3-in-1 Air Purifier for Pollution
Click to See Prices
  • Eliminate Bacteria and Viruses
  • Relief from symptoms
  • 3-in-1 Filtration
  • Quiet Operation
Silver Onyx Air Purifier
Click to See Prices
  • Eliminate Airborne Germs & Viruses
  • Relief from symptoms
  • Great Price
  • 4 Stage Filtration

Air purifiers are often known for their ability to eliminate dirty air such as dust, pollen, and odor, but did you know that an air purifier can also eliminate and kill bacteria, viruses, and germs?

Not only do these purifiers effectively reduce allergens, mold, pet odors, dust, and smoke, but they also have been proven to fight germs and bacteria that cause infections, flus, colds, and more.

The TruSense Air Purifier is the best rated air purifier for killing viruses, germs, and bacteria. With a UV germicidal lamp that is part of an advanced 4 stage filtration system, this purifier will eliminate airborne pathogens in your home. 

Best Air Purifiers for Bacteria and Viruses Reviews


This germ-killing air purifier is manufactured by TruSense. TrueSense is a respected designer and manufacturer in the air purifier industry and has created one of the most reliable, affordable, and best performing air purifier for bacteria and viruses on the market.

  • Pre-Filter
  • Carbon Filter
  • True HEPA Filter 
  • UV Sterilization

As explained above, the TruSense air purifier was chosen as the best air purifier for bacteria and viruses because of its perfect balance of performance, filtration process, design, durability, and affordability. The purification process includes a 360 degree filtration with a pre-filter, carbon filter, True HEPA filter, and UV germicidal lamp. UV-sterilizer are essential for eliminating airborne germs, bacteria, or viruses. 

This germ killing air purifier features 4 levels of air purification including a UV germicidal lamp that kills germs and viruses, preventing the re-circulation of live airborne germs, PureDirect proprietary technology with two airflow streams that results in 24% more efficient airflow and 100% total room coverage, easy push-button display, auto mode, portable air quality sensor and display that automatically adjusts airflow, filter change light indicator, quiet performance, lightweight design, and more. The UV-C sterilizer can also be turned off and on.  

Bacteria, viruses, germs, and other contaminants flow into the bottom of the air purifier and begin the 4 stage filtration process as shown below:

  1. Pre-filter – captures larger particles and smoke residue
  2. Carbon filter – absorbs smaller particles, VOCs, Odors, and toxins
  3. HEPA filter – captures 99.97% of airborne particles at least .03 microns in size (including some viruses and bacteria)
  4. UV Sanitation – kills living organisms such as live germs. viruses, bacteria, dust mites, and more.

As you can see, the TruSense’s advanced technology is perfect for eliminating bacteria and viruses at an affordable price.


This germ-killing air purifier is manufactured by Guardian Technologies. Guardian Technologies is another well respected company in the air purification industry. They offer a wide range of air quality products.

  • Pre-Filter
  • HEPA Filter
  • Activated Carbon Filter 
  • Optional UV-C light

The Germ Guardian was chosen as our second best pick for killing and removing germs, bacteria and viruses. Guardian Technologies manufacturers this air purifier. They are well respected in the air purification industry and offer a line of products that include air purifiers, sanitizers, humidifiers, and essential oil diffusers. 

The GermGuardian germ-killing air purifier features a three-stage filtration process, 3 fan speed options, an easy-to-use push-button display, quiet performance, and a lightweight design. 

It was chosen as the second-best air purifier for bacteria, viruses, and germs not only because of its advanced UV-C light technology but also because of its popularity in the air purification industry. The GermGuardian AC4825 is the highest seller on amazon, affordably priced, and has over 6,000 reviews. With 6,000 reviews and an amazon rating well above 4.0, it’s safe to say that this purifier can be trusted.

Using the Germ Guardian is a safe way to ensure that your house or office will be free from airborne germs and viruses in order to prevent sicknesses such as the flu. The UV-C light chamber will kill germs as they flow into the purifier leaving the air clean. 


This product is manufactured by IQAir. IQAir is known for creating some of the most effective air purifiers on the market. The company’s line of air purifiers are recognized as top of the line medical-grade machines. The company has even played an important role in slowing the spread of coronavirus in Wuhan, China. During January, IQAir provided hundreds of its air purifiers to Chinese Hospitals. 

  • HyperHEPA: 100x more effective than HEPA air purifiers
This air purifier features a proven medical-grade air filter called the Hyper HEPA Filter. This filter is 100x more effective than other HEPA air purifiers. IQAir’s advanced HyperHEPA filters are able to stop the ultrafine particles that are as small as 0.003 microns. Ultrafine particles  (including bacteria and viruses) can easily penetrate the lung tissue when inhaled and travel to all vital organs, including the brain. Luckily, thanks to the Hyper HEPA filter, the IQAir purifier has the ability to capture these viruses.
The air purifier is also able to cover a room size of up to 1,125 sq ft. This means it can filter all of the air in a large space at a very quick rate.
The science behind IQAir’s success with the revolutionary machine is due to the advanced IQAir HyperHEPA filtration technology that is able to trap particles of all sizes including viruses, germs, bacteria, smoke, pollen, dust, and more. 

This product is manufactured by Pure Zone. Pure Zone is not a household name like the others, but manufactures a line of air purifiers that all have very high ratings and great customer feedback on amazon.

  • Pre-Filter
  • Activated Carbon Filter
  • True HEPA Filter 
  • UV-C Sanitizer
This air purifier features three speed settings, an automatic timer, filter reset indicator, quiet operation, and a 5 year warranty.
It is advertised as a 3-in-1 air purifier, but it actually offers a 4 stage filtration process. The PureZone 3-in-1 technologies include a pre-filter, activated carbon filter, true HEPA filter, and a UV-C light sanitizer (great for eliminating germs). Not only will the first three filters remove a wide range of air contaminants, but the UV-C light sanitizer will kill germs, bacteria, viruses, and mold.
The PureZone offers great performance at a great price. Although it will not effectively clean massively sized rooms, the PureZone 3-in-1 is perfect for smaller sized rooms such as a hospital room. 
The purifier offers a great user experience, sleek design, quiet look, and at only 8.45 pounds, it can easily be placed in the location you desire.
This air purifier was chosen as the third best air purifier for germs, but still offers great performance. The purifier will eliminate bacteria and viruses in any location.

This product is manufactured by SilverOnyx. Silver Onyx is well respected in the air purifier industry, and many believe they manufacture the best air purifiers on the market.

  • Pre-Filter
  • True HEPA Filter 
  • Activated Carbon Filter 
  • Clean Air Ionizer 
  • UV-C Sanitize

SilverOnyx is a company that specializes in designing healthy living products such as vacuums, scales, vitamins, and air purifiers. 

The SilverOnyx air purifier was chosen as one of the top air purifiers for bacteria and viruses because of its unique design and a 5 stage purification process. The purification process includes a 360 degree pre-filter, True HEPA filter, and Activated Carbon Filter, and also has an ionizer and UV-C sterilizer. This air purifier is great for removing germs, bacteria, or viruses from the air because of its advanced UV-C light sterilizer. 

The SilverOnyx features a five stage filtration process, five fan speeds, easy-to-use push button display, sleep function to turn off lights, particulate matter sensor that automatically adjusts airflow, on/off timer, filter change light indicator, auto mode, quiet performance, and a lightweight design. The UV-C sterilizer can also be turned off and on as desired.  

The product’s 360 degree design takes up less space than flat filter purifiers while still allowing for 60% more surface area. This is why the SilverOnyx is able to filter more cubic meters of air per minute.

As bacteria, viruses (such as the flu, colds, or the stomach bug), germs, and more flow into the purifier, they first flow through a mesh pre-filter that captures large particles, the air then enters the true HEPA filter that removes 99.97% of particles and odors under .3 microns in size. After syphoning through the HEPA filter, the dirty air reaches the activated carbon filter. The carbon filter uses millions of crushed charcoal particles to absorb odors and small particles. After flowing through the activated carbon filter, the air contaminants enter the UV-C sanitization chamber which zaps and kills any mold, germs, bacteria, viruses or living organisms with intense UV light. The final stage in the purification process (if turned on) is for any remaining dirty air to pass through the ionizer.  

As you can see, the Silver Onyx’s advanced purification process combined with the increased level of surface area due to its 360 degree design is the reason for purifier being one of the best on the market. Bacteria and viruses are eliminated from the HEPA and UV technologies while other contaminants are removed from the pre-filter, HEPA filter, Carbon filter, and ionizer. 

Best Air Purifier for Bacteria & VirusesBacteria & VirusesGermsPollenPets and Dust
1. TruSenseGreatGreatGreatGreat
2. GermGuardianGoodGoodGoodGood
3. IQAir Health Pro PlusBestBestBestBest
4. PureZone 3-in-1GoodGoodGoodGood
5. SilverOnyxGreatGreatGoodGood

Frequently Asked Questions (FAQ)

Why use an Air Purifier for Bacteria and Viruses or Germs?

  1. Prevents the spread of airborne viruses
  2. Keeps germs from getting onto surfaces
  3.  Releases clean air into your home

Germs, Bacteria, and VirusesWhen someone coughs or sneezes they release thousands of micro-organisms into the air.  These micro-organisms are often filled with bacteria and viruses called germs. When exposed to people, germs can cause colds, flus, and viruses. 

Sneezes can travel at speeds up to 100 miles per hour and can reach distances of 3 meters! Also, bacteria and viruses released from a cough or sneeze will subsequently linger in the air before falling onto surrounding surfaces. Once on the surrounding surfaces, germs (bacteria and viruses) such as the flu can survive for several hours infecting anyone that comes in contact with that surface later in the day. That is why is is important to use an air purifier to kill these germs before they are able to reach the surrounding surfaces.

Surprisingly, people do not need to have face-to-face interaction with an infected person. Germs and viruses can remain suspended in the air for several minutes and even travel from room to room though ventilation systems. An air purifier will absorb the majority of the air in the room and kill germs as they flow into the purifier.

According to, over 7 million Americans have already been struck with a strain of this year’s flu virus, and between 69,000 and 84,000 have been hospitalized. Considering that flu activity normally peaks in February, it’s important to take action before flu season begins. Flu season can even extend into the summer months. 

It is important to get the flu shot each year as a different flu strain will effect the US every winter. When someone gets a flu shot, they are introduced to a minor amount of the bacteria allowing the body to fight and kill this intruder. After being introduced to the virus once, the body will then recognize the flu after coming in contact for a second time and will be able to easily kill the germs. Although flu shots can be very effective, many times the flu shot is not enough to eliminate the virus. Sometimes a different strain (different from the flu shot strain) of the virus is transmitted and is still able to infect someone who already got a flu shot. That is why it is till important to use an air purifier for germs even if you have gotten a flu shot.

It is important to use an air purifier to draw in and destroy these germs before they have a chance to be inhaled or contaminate surfaces in the area.  

Do Air Purifiers Kill Viruses?

Not all air purifiers will kill viruses. In order for an air purifier to kill an airborne virus, the purifier must feature UV light technology. Air purifiers that use UV light sanitization will not only kill viruses but will also kill germs, bacteria, and microscopic organisms. HEPA and activated carbon filters will capture viruses, but will not kill them.

Does a HEPA Filter Remove Viruses?

A HEPA filter will remove most viruses, but will not remove all of them. True HEPA filters are able to capture 99.97% of airborne particles that are at least .03 microns in size. Most virus particles are below .03 microns, which means that the 99.97% capture rate will be lower depending on the type of virus. Although a HEPA filter will capture a large amount of airborne viruses, they will not capture everything. It is important to use a UV light sanitizer, and an activated carbon filter in conjunction with a HEPA filter.

Do Germ Killing Air Purifiers Remove Bacteria?

An air purifier is able to remove and kill most bacteria from your home. The three methods used to remove bacteria are True HEPA filters, Activated carbon filters, and UV light sanitizers. True HEPA filters will remove all bacteria that is at least .03 microns in size. An activated carbon filter takes a different approach by absorbing bacteria with its incredible amounts of surface area. Finally, UV light sanitization will not remove bacteria, but will kill it.

Which Air Purifiers are Best for Bacteria, Viruses, and Germs

Airborne Germs and Virses

When looking for an air purifier for bacteria and viruses that is a true air germ killer it is important to make sure that the purifier features ultraviolet light technology and a True HEPA filter. These two technologies will be vital to capturing and killing germ air contaminants.

UV-C Light Sanitizers Are True Germ Air Killers

UV sanitizers use ultra violet light chambers within the purifier to zap microorganisms as they pass through. UV light is the same light that gives you a sunburn in the summer. As many people have experienced in the summer, this form of light can be very harmful to living organisms. This technology uses intense levels of UV light that cripple living organisms. A UV-Light purifier will will kill bacteria, germs, and living organisms such as the flu virus as they pass through the purifier. After entering the UV chamber, these viruses are destroyed and will not be able to infect anyone. This important virus and germ air killer feature will get the job done well.

True HEPA Filters Capture Germs, Bacteria, and Viruses

An air purifier with a HEPA filter will trap 99.97% of contaminants that are at least .3 microns in size. To put that into prospective, bacteria, viruses, and germs generally range from 1 to 10 microns in size. This means that a HEPA filter will be able to capture and kill 99.97% of bacteria and germs that enter the purifier. Although HEPA filters are effective, there are some viruses that are extremely small and will not be captured by the filter. That is why it is important to get a purifier that has both a HEPA filter and UV-C light technology. The best way to kill and remove germs, bacteria, and all viruses from the air is to use a purifier that first uses a HEPA filter to capture the larger organisms then use a UV light chamber to kill any remaining viruses or germs.

The combination of these two types of technology will provide the best solution for eliminating germs, bacteria, and viruses. 

What Type of Viruses & Germs can an Air Purifier Remove?

Type of Virus
Strep Throat
Stomach viruses
Pink Eye
Head Lice
Coughing and Sneezing

Benefits of Air Purifiers that Kill Germs

  • Kill airborne pathogens
  • Reduce spreading of the Coronavirus, Flus, colds, stomach bugs, and other viruses
  • Reduce airborne bacterial counts
  • Improve overall air quality
  • Prevent the spreading of viruses 
  • Eliminate the growth of fungi

What is ultraviolet (UV) light?

As explained above, UV rays are a form electromagnetic radiation that is commonly known as light. Light travels in waves, and each form of light has a different wavelength. The wavelength of UV rays are too small for the human eye to see.

You’ve probably heard of UV rays when watching the weather channel in the summer because of their damage to human skin. The sun produces three forms of UV light that can be harmful to human skin. The forms of UV light are UV-A, UV-B, and UV-C rays.

The most harmful type of UV light is UV-C. This is the type of UV light that is also best for removing germs, bacteria, and viruses and is the type used in your air purifier. 

How Ultraviolet Light (UV) Technology Kills Germs

An ultraviolet light air purifier uses a UV-C light chamber to burn and subsequently kill living organisms at the particulate level such as bacteria, viruses, germs, and fungus such as mold spores. As air is drawn into the purifier, it is directed into the UV-C chamber. Intense levels of UV light (the same light that gives you a sunburn in the summer) are exposed to the contaminants. These intense levels of light will kill bacteria and viruses. Basically, the viruses and bacteria are sent through an intense tanning bed. 

The Right Air Purifier for Bacteria and Viruses

All of the air purifiers that we have chosen offer both a UV-C light sanitizer as well as a true HEPA Filter. When purchasing an air purifier for this reason it is important to make sure that the air purifier offers both of these technologies. It is also important to make sure that the purifier has the ability to clean the correct sized room.

Determining the Right Size Air Purifier

The best way to determine the right size air purifier is to first measure the length and width of your room. Take the length of the room and multiply it by the width. This will give you the square footage of your room. 

After determining the square footage of your room it is important to look for an air purifier that is able to effectively clean the square footage needed. 

It is important to consider that a stronger air purifier will be able to absorb more air particles at a faster rate. That means that is someone in the room sneezes then a stronger air purifier will be able to capture more of the germs, bacteria, or viruses from the air before they have a chance to come into contact with other surfaces or are inhaled by someone else. 

Air Purifier for Germs Conclusion

It is very important to be aware of your surroundings at all times. The best way to prevent sickness (besides washing your hands and simply being smart) is to purchase an air purifier for bacteria, viruses, and germs that will effectively remove the germs from the air and keep your home or office safe from contaminants. 

If you have become sick, find out what is the best air purifier for sickness.


    • If you are trying to prevent the cold from spreading I would suggest the SilverOnyx. This air purifier has a great combination of air purification technologies and features an advanced UV-C sanitizer that will kill germs and bacteria that enter the purifier. Be sure to place the purifier in the most used room of your house to achieve the best results.

    • Troy, in our opinion the Silver Onyx is the best all around air purifier for not only bacteria and viruses (such as the flu) but also other airborne contaminants such as pollen and dust. Although this purifier is great, we also recommend the PureZone 3-in-1. Honestly, you can not go wrong with either of these purifiers. The GermGuardian is best for a limited budget because it is priced a little lower but still offers great performance. Ultimately, we recommend Silver Onyx, but be sure to use the optional UV light to remove germs. You should use the above links to analyze the products on Amazon before making a final decision.

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.