Best UV Air Purifier 2019 | HowtoHome

Best UV Air Purifier

Share It!

Best UV Air Purifier

Check Amazon Price See Full Review
Type Compact, plug-in
Size 8.5 x 8.5 x 13.2
Weight 4 lbs
Filter Pre + HEPA + Carbon + UV + Ionizer
Room Coverage 500 sq. ft.
CADR Ratings Dust: ~ 85 Pollen: ~ 85 Smoke: ~ 85

Check Amazon Price See Full Review
Type Tower, plug-in
Size 7 x 10.2 x 21.5
Weight 7 lbs
Filter Carbon Pre + HEPA + UV
Room Coverage 167 sq. ft.
CADR Ratings Dust: 118 Pollen: 125 Smoke: 108

Check Amazon Price See Full Review
Type Console, plug-in
Size 10.8 x 6.9 x 12.1
Weight 8.47 lbs
Filter Pre + Carbon + HEPA + UV
Room Coverage 200 sq. ft.
CADR Ratings Dust: 80 Pollen: 80 Smoke: 80

Check Amazon Price See Full Review
Type Console, plug-in
Size 12.34 x 6.25 x 17.75
Weight 8.9 lbs
Filter Carbon Pre + HEPA + Ionizer + UV
Room Coverage 300 sq. ft.
CADR Ratings Dust: 170 Pollen: 170 Smoke: 170

Check Amazon Price See Full Review
Type Console, plug-in
Size 12.7 x 7.3 x 16
Weight 9.7 lbs
Filter Pre + HEPA + Carbon + UV
Room Coverage 323 sq. ft.
CADR Ratings Dust: ~ 120 Pollen: ~ 120 Smoke: ~ 120

In recent years, clean air has become increasingly difficult to achieve. Despite the steady rise in air pollution all over the world, air purifiers have kept in step and rapidly evolved to address the different problems that air pollution creates. One of the most popular technologies used in air purifiers, in combination with filtration and ionization, is ultraviolet light.

Ultraviolet light has long been used as an antimicrobial treatment and helps to kill bacteria, viruses, yeasts, and molds in the air. Air purifiers use UV-C light in particular, which has a short wavelength of about 254 nanometers. At this wavelength, ultraviolet light is considered germicidal. It works by penetrating thin-walled germs like viruses and bacteria and fatally altering their genetic structure. As a result, air purifiers employing UV-C light will greatly benefit people with allergies, asthma, and weakened immune systems, providing them with added protection against germs at home.

In this article, we’ll be exploring the five best air purifiers which use UV-C light treatment. Read on to find out what makes them stand out from all the other air purifiers in the market.

The SilverOnyx Air Purifier is a sleek, small air purifier that is capable of cleaning the air in very large rooms up to 500 sq. ft. in size. It has an impressive 5-stage air purification system which includes a pre-filter, True HEPA filter, carbon filter, ionizer, and UV-C light treatment.

Pros

  • Very large room coverage
  • Affordable (upfront and long-term)
  • Small, lightweight
  • Quiet
  • Energy efficient
  • Sleek design
  • Several smart features (i.e. auto mode and air quality indicator)

Cons

  • Low CADR and airflow
  • Short warranty

Features

  • 5-Stage Air Purification System
  • Optional Ionizer
  • Optional UV
  • Air Quality Indicator
  • Filter Change Indicator
  • Auto/Sleep Modes
  • Programmable Timer
  • 5 Fan Speeds
  • 1-Year Warranty

The SilverOnyx 5 Speed KJ150F-C02 is our first contender for this list. It’s small, compact, and lightweight, yet it is also one of the most powerful air purifiers on this list with the most impressive room coverage of up to 500 sq. ft. Aside from its superior room coverage, one of the best things about the SilverOnyx is that it has a comprehensive 5-stage air purification system, which consists of a pre-filter, True HEPA filter, carbon filter, ionizer, and UV-C light treatment. This allows the SilverOnyx to target a wide array of air pollutants, from allergens and odors to bacteria and viruses.

What’s even better is that the SilverOnyx also has several smart features to choose from to make your experience even better. It has an air quality indicator, filter change indicator, auto and sleep modes, a programmable timer, and 5 fan speeds from which to choose. On auto mode, this air purifier adjusts the fan speed automatically depending on the air quality in the room so that you can set it and forget it.

However, for all its features and impressive room coverage, the SilverOnyx’s airflow rate and CADR ratings pale in comparison to the other air purifiers on this list. Rated with an airflow rate of no more than 85 cfm, the SilveryOnyx will need more time to clean the room. In addition, it has a very short warranty period which may worry some people. Overall, though, we believe the pros far outweigh the cons for the SilverOnyx. Considering its affordability, the SilverOnyx air purifier provides a comprehensive air purification system to handle all sorts of pollutants and an array of features that make using it even more convenient and easy.

…Read Less

The GermGuardian AC4825 is a budget-friendly tower-type air purifier that uses a 3-stage air purification system comprised of a carbon pre-filter, True HEPA filter, and UV-C Light that fights disease-causing bacteria and viruses. It is best used in small rooms up to 167 sq. ft. in size and is popular for its ability to filter out household odors and harmful volatile organic compounds.

Pros

  • Affordable (upfront)
  • Sleek and lightweight
  • Quiet
  • Energy efficient
  • Good CADR and airflow rate for price

Cons

  • Less features
  • No air quality indicator and smart modes
  • Slightly expensive filter replacements
  • Small room coverage

Features

  • Ultra-Quiet Operation
  • UV-C Technology
  • 3 Fan Speeds
  • 3-year Warranty

The GermGuardian AC4825 is undoubtedly the most popular UV-C air purifier, a fact testified to by the thousands of reviews it has garnered on Amazon. This tower-type air purifier from Guardian Technologies provides you with a great 3-stage air purification system with UV-C light treatment for a very affordable price.

Retailing at less than $90, the AC4825 is definitely a crowd favorite especially for those on a tight budget. Its 3-stage air purification system begins with a carbon pre-filter for removing light household odors, a True HEPA filter to remove allergens, and a UV-C light bulb to zap those disease-causing bacteria and viruses.

Depending on your needs, the AC4825 has 3 fan speeds to choose from. For its price, the AC4825 has surprisingly good CADR ratings and airflow rates on all 3 fan speeds. It’s also Energy Star rated so that you know it’s energy efficient. It runs on Ultra-Quiet Operation, too, so you can leave it on for long periods without worrying about it being too disruptive or too energy-consuming.

Unfortunately, the AC4825 is greatly limited by its room coverage: rated to cover a mere 167 sq. ft. of space, it is capable of cleaning the air only in small rooms. In addition, it lacks several smart features that other UV air purifiers on this list have like, a filter change indicator or timer, which makes the AC4825 a lot less convenient to use. Its replacement filters are also quite expensive, with yearly costs almost equating to a brand new AC4825!

In terms of performance, however, the AC4825 will not let you down. As long as you use it in a small room, it’ll scrub the air clean of allergens, odors, and bacteria with ease and without breaking the bank.

…Read Less

The PureZone 3-in-1 Air Purifier is a small, console-type air purifier with a purification system consisting of a 3-in-1 filter (pre-filter, carbon filter, and True HEPA filter) and UV-C light. It is capable of removing common allergens, light odors, bacteria, and viruses in rooms up to 200 sq. ft.

Pros

  • Affordable (upfront and long-term)
  • Easy to maintain
  • Sleek and lightweight
  • Quiet
  • Energy efficient
  • Long warranty

Cons

  • Low CADR and airflow
  • No air quality indicator and smart modes

Features

  • 3-in-1 Filter
  • Optional UV-C Light Treatment
  • Filter Change Indicator
  • Preset Timer
  • 3 Fan Speeds
  • Whisper-Quiet Operation
  • 5-year Warranty

Another popular and budget-friendly UV air purifier is the Pure Enrichment PureZone 3-in-1 PEAIRPLG, which retails at less than $100. With a solid rating of 4.6 on Amazon from almost 900 reviews, the PureZone is definitely an air purifier that deserves attention.

The PureZone has a unique 3-in-1 filter that acts as a pre-filter, carbon filter, and True HEPA filter rolled into one. This makes maintaining the PureZone very easy and affordable, with yearly costs adding up to only $40. It’s sufficient to remove light odors, common allergens, and larger debris. Of course, along with the 3-in-1 filter is a UV-C light bulb for providing antimicrobial protection.

Aside from its air purification system, the PureZone also has other useful features such as a filter change indicator, a timer, and 3 fan speeds from which to choose. Thanks to its Whisper-Quiet Operation and Energy Star rating, you can let the PureZone run for long periods of time without worrying about it being too disruptive or energy-consuming.

The main downside to the PureZone is that, like the SilverOnyx, it also has very low CADR ratings. This  means it also has a low airflow rate and makes the PureZone a lot slower at cleaning the air. It also lacks some useful features like an air quality indicator and smart mode options. These downsides aren’t too critical for the performance of the PureZone, allowing it to remain a good affordable option that doesn’t sacrifice aesthetics, features, or performance.

…Read Less

The InvisiClean Aura IC-5018 is a small console air purifier that makes use of a 4-stage air purification system: carbon pre-filter, True HEPA filter, ionizer, and UV-C light treatment. It is capable of cleaning the air in large rooms up to 300 sq. ft. in size and is quite affordable compared to other air purifiers of its calibre.

Pros

  • Affordable (upfront)
  • Large room coverage
  • Energy efficient
  • Small and lightweight
  • Sleek design
  • Good CADR and airflow rate for price

Cons

  • Slightly expensive filter replacements
  • No air quality indicator and smart modes
  • Slightly loud

Features

  • 4-Stage Air Purification System
  • Optional Ionizer
  • Optional UV-C Light
  • Preset Timer
  • Filter Change Indicator
  • Sleep Mode
  • 4 Fan Speeds
  • 3-Year Warranty

The InvisiClean Aura Air Purifier is another lightweight console air purifier that comes with a very modest price tag. It uses a great 4-stage air purification system that starts off with a carbon pre-filter to remove large debris and odors. That’s followed by a True HEPA filter capable of removing up to 99.97% of pollutants as small as 0.3 microns. Finally, you have an optional ionizer for added efficiency against airborne pollutants and a powerful UV-C light treatment to kill disease- and odor-causing bacteria and viruses.

Needless to say, the Aura definitely has a solid air purification system to tackle all types of air pollutants. However, aside from its cleaning power, the Aura also has a large room coverage of 300 sq. ft. which is a big advantage considering how affordable it is. It also has a pretty decent CADR rating and airflow rate. In addition, it has several helpful features like a filter change indicator, preset timer, and sleep mode. All these features, while not critical to the performance of an air purifier, make use and maintenance a lot more convenient.

Despite these perks, the Aura still lacks other features that might have made it an even better air purifier. For example, it doesn’t have an air quality indicator or an auto mode like the SilverOnyx. In addition, its replacement filters are a little pricey. Customers have also complained that the Aura makes a considerable amount of noise, even on the lowest setting, which may be a problem for those who want to use it at night. Overall, though, the Aura is a pretty solid contender as it offers large room coverage, thorough air purification system, sleek design, and packed with features at a very reasonable price.

…Read Less

The Oregon Scientific CF8410 is a small, lightweight console air purifier capable of cleaning the air in areas up to 323 sq. ft. in size. It has a 4-stage air purification system starting with a pre-filter, followed by a True HEPA filter, then a carbon filter, and finishing off with UV-C light treatment.

Pros

  • Affordable (upfront and long-term)
  • Large room coverage
  • Quiet
  • Sleek design
  • Good CADR and airflow rate for price
  • Sleek design

Cons

  • Short filter lifespan
  • Short warranty
  • No air quality indicator and smart modes

Features

  • 4-Stage Air Purification System
  • UV-C Light Technology
  • Preset Timer
  • Filter Change Indicator
  • 3 Fan Speeds
  • 1-Year Warranty

The CF8410 from Oregon Scientific is another console air purifier that is reminiscent of both the PureZone and the Aura as it shares the same sleek, white exterior and modest price tag. The CF8410 can hold its own, because it has a powerful 4-stage air purification system with a pre-filter, True HEPA filter, carbon filter, and, of course, UV-C light treatment. You can definitely count on this system to take care of various types of air pollutants commonly found at home.

Rated to cover 323 sq. ft., the CF8410 is capable of covering large rooms. For its price, it also has a pretty good CADR rating and airflow rate. Like the Aura, the CF8410 has all the makings of a good mid-range air purifier: it has a filter change indicator, preset timer, and 3 fan speeds to choose from. It lacks an air quality indicator, however, as well as smart modes that would have helped make it easier and more convenient to use.

Furthermore, the CF8410’s filters have a pretty short filter life span which may amount to more filter replacements throughout the year depending on the air quality in your home. It also offers a very short 1-year limited warranty, which may make potential buyers uneasy and doubt the integrity of the air purifier. Even with these flaws, you still can’t deny the CF8410’s 4.6 rating and the fact that it remains to be one of the best-selling UV air purifiers available with such an affordable price tag.

…Read Less

Buyers Guide


What is UV light?

Ultraviolet (UV) light is a type of electromagnetic light that is all around us but is not visible to the human eye. It has a wavelength of about 10 nm to 400 nm, which is shorter than that of visible light, but longer than X-rays. UV light is present in sunlight and is responsible for causing suntans, sunburns, and a higher risk of cancer. Although too much UV light can be harmful, it is also beneficial for us in that it is responsible for the formation of bone-strengthening vitamin D. UV light also has many valuable uses in photography, electronics, forensics, chemistry, and the medical field to name a few.

What are the types of UV light?

There are three types of UV light, each of which is defined by their wavelengths:

  • UV-A – UV-A rays have the longest wavelengths, ranging from 315-400 nm
  • UV-B – UV-B rays fall in the middle with wavelengths ranging from 280-315 nm
  • UV-C – UV-C rays have the shortest wavelengths ranging from 100-280 nm

UVA rays and UVB rays can damage skin and cause skin cancer, while UV-C rays are not known to cause any type of skin disease. Rather, UV-C rays are considered germicidal and are commonly used to disinfect and sterilize.

What are UV air purifiers?

A UV air purifier is an air purifier that makes use of a UV light bulb as part of their air purification process. UV air purifiers specifically use UV-C light because of its germicidal effects.

Numerous studies have shown that UV-C light very effectively inactivates viruses, bacteria, mold, mildew, and fungi by breaking down their DNA. Thanks to this technology, UV air purifiers become more adept at removing biological air pollutants than regular air purifiers and create an even more sanitary environment at home.

What factors affect the effectiveness of UV air purifiers?

One of the biggest disadvantages to using UV light in air purifiers is that there are a lot of factors that can affect its performance. These elements can include:

  • Exposure Time – The effectiveness of a UV light in an air purifier is dependent on the length of time pollutants are exposed to the light. Unfortunately, it takes some time for the UV light to do its job. Although a fast airflow rate is desirable in most air purifiers, that is not always the case with UV air purifiers. Ideally, once the air reaches the UV light treatment chamber, airflow should slow down significantly to allow the UV light to effectively eliminate the biological pollutants.
  • Intensity of UV Light  – The intensity of the UV light used in air purifiers is also critical to its performance, because a light that is too weak may not be able to fully combat bacteria and viruses.
  • Proximity of Pollutants – For UV light to effectively eliminate biological pollutants, they need to be in close proximity to it. Pollutants that are too far away from the light may not be inactivated and thus can be released back into the room.
  • Air Changes – The number of air changes per hour, or ACH, is the number of times the air in a given space is circulated through the air purifier. The more air changes it is able to do, the more effective the UV air purifier will be.

Who would benefit from UV air purifiers?

Because UV air purifiers are able to eliminate allergens, bacteria, and viruses, they can be very beneficial to people who suffer from allergies, asthma, or have weakened immune systems that are caused by certain diseases. UV air purifiers are also good for homes with children and elderly occupants since they can create healthier, more sanitary environments by preventing the spread of disease-causing bacteria.

What are the benefits of using UV air purifiers?

  • Reduced Allergic Reactions – Since UV light is so adept at eliminating allergens such as pet dander and mold, people who suffer from allergies might notice that they have less allergic reactions when they have a UV air purifier running at home.
  • Reduced Risk of Mold Infestation – Mold spores can trigger allergies and, when these spores accumulate in your home, you can end up with a mold infestation. UV air purifiers can prevent this by effectively eliminating mold spores from accumulating.
  • Reduced Risk of Illness – Viruses and bacteria circulate throughout our air and are often the causes of common diseases like cough, colds, and flu. Having a UV light air purifier at home can effectively reduce the amount of viruses and bacteria and thereby lower the risk of illnesses.
  • Reduced Odors – UV air purifiers do an excellent job of targeting odor-causing bacteria at home. A UV air purifier can eliminate these bacteria and improve the overall smell of your home, leaving you with fresher air to breathe.

Are there disadvantages to using UV air purifiers?

As we previously mentioned, there are several factors that affect the performance of a UV air purifier. If these factors are not addressed, it may render the UV light treatment completely ineffective at eliminating biological pollutants. That’s why it’s crucial to take all those factors into consideration before purchasing a UV air purifier. In addition, UV air purifiers have several additional factors to consider that may be disadvantages for some users. These include:

  • Filters Boost Effectiveness – UV light is excellent at killing harmful bacteria and viruses, but it won’t remove them. That’s why the best UV air purifiers make use of filters like True HEPA filters and carbon filters to trap these pollutants and prevent them from being released back into the room.
  • Bulb Replacements – In addition to periodic filter replacements, UV-C light bulbs will need to be replaced every 12 to 24 months depending on the air purifier brand and model. It’s always best to follow the manufacturer’s instructions about replacing the UV-C light bulb to ensure that your UV air purifier is in tip-top shape.
  • Production of Ozone – The UV technology used by some air purifier models may produce potentially high amounts of ozone while in use. Ozone is a lung-irritant and can be harmful when inhaled in high concentrations. Unfortunately, most manufacturers will not mention this about their UV air purifiers.
  • Technology Tricks – In relation to the previous point, manufacturers often don’t explain what UV light technology they use and how it works. Because of this, people may not be fully aware of what they’re getting into when purchasing a UV air purifier.

Final Thoughts

Air purifiers these days have become increasingly complex, especially with the features and technologies they employ. While not new to the air purifier industry, the use of UV-C technology in air purifiers has proven very effective in fighting off disease- and odor-causing bacteria and viruses that cannot be removed by filters alone. UV air purifiers, in general, are much more adept than regular air purifiers in providing you with a healthier, more sanitary home environment.

After searching high and low for the best UV air purifier, we believe the best one you can purchase at the most reasonable price is undoubtedly the SilverOnyx 5 Speed KJ150F-C02. The SilverOnyx, despite being small and compact, is capable of providing you with the largest area coverage of all the other UV air purifiers on this list. Furthermore, its air purification system is able to target a wide array of airborne pollutants such as allergens, odors, and germs. The features of the SilverOnyx are also added bonuses to its performance, making it so much easier to use and remove the guesswork that comes with using and maintaining it. All these traits combined make SilverOnyx a powerful and affordable UV air purifier that is perfect for any type of home.