There is no chance of the deactivated pathogens growing and spreading in the room. This UV air sanitizer offers a little bit of everything, starting with 5-stage filtration consisting of a pre-filter mesh, H13 activated carbon fiber, and UV/ion generator combination for added defense against bacteria and germs. First, it grabs large particles with a pre-filter before it removes the smaller ones with a HEPA filter. WHY WE LIKE IT: This UV air purifier covers up to 500 square feet of space using 5 filtration levels and a PM2.5 (particulate matter) sensor for automatic airflow adjustment, an excellent choice for anyone looking for a well-rounded machine. The built-in ionizer generates ions to attract and pull down heavier contaminants in the air for the filter to capture. On the flip side, A UV air purifier cannot remove non-airborne pollutants stuck on the sofa, carpet, wall, and floor. The spinning fan is clearly audible at high speed to compensate for the average airflow delivery rate. Energy Star certified power consumption is efficient despite the omission of auto mode. Multiply by 12 will cost you between 36 to 60 dollars annually. According to smartairfilter, a 6mW/cm2 UV light would take a minimum of 12.5 seconds to kill >99.9% of the virus. Power-wise, the 3 watts standby mode to max 47 watts is low compared with other electrical appliances. Moving to the controls, the GermGuardian AC5250PT setup is straightforward, with a digital display that helps readability. Rounding up to 30 days, expect a monthly 3 dollars of electric cost. While the trapped microorganisms from growth and reintroducing back into the air is a risk, proper maintenance and regular filter change can mitigate the risk. Ultraviolet light from the air purifier is safe, as long as you are not directly exposed to it. The combined noise output is around 30 to 50 dB depending on the fan speed you're in. We recommend replacing it sooner rather than later, especially when a drastic drop in the ultraviolet light intensity. Being a pure UV air purifier without mechanical filters, the GermGuardian GG1100 Elite plug-in is completely silent. When shopping for an air purifier with UV light, there are many factors to consider. This limited coverage area is offset by a slew of digital features to combat volatile organic compounds, including five fan settings, an 8-hour timer, and a filter change indicator. Keep reading about this and our other top picks to learn more about choosing the best air purifier for your needs. The material of the lightbulb, like phosphor, quartz, and LED, also plays a big part. Note that UV air purifiers do not prevent you from contracting bacteria and viruses like coronavirus. That said, there are fake UV air purifiers out there or ozone generator that relies heavily on ozone to mask the air. The tall 9.5 inches height of GermGuardian AC5250PT Pet Pure enhanced the flexibility to place in a tight area with little room to spare. #1 Pure Enrichment PureZone Elite 4-in-1 UV Air Purifier, #3 Germ Guardian AC5350B UV Air Purifier, #5 Germ Guardian AC4825E UV Air Purifier, #6 Germ Guardian AC5250PT UV Air Purifier, #7 InvisiClean Claro Air Purifier Air Purifier, air cleaner is better than an air purifier, Pure Enrichment PureZone Elite True HEPA, Air Purifier for Home Allergies Pets Hair in, Germ Guardian Air Purifier for Home, Large Rooms,, Pure Enrichment PureZone Elite 4-in-1 UV Air Purifier, Our #1 Pick is the Pure Enrichment PureZone Elite 4-in-1 UV Air Purifier, Our #2 Pick is the SilverOnyx UV Air Purifier, Our #3 Pick is the Germ Guardian AC5350B UV Air Purifier, Our #4 Pick is the Airthereal APH260 UV Air Purifier, Our #5 Pick is the Germ Guardian AC4825E UV Air Purifier, Our #6 Pick is the Germ Guardian AC5250PT UV Air Purifier, Our #7 Pick is the InvisiClean Claro Air Purifier Air Purifier, Our #8 Pick is the Homedics TotalClean UV Air Purifier, Our #9 Pick is the Trusens UV Air Purifier, Color code air quality monitor for easy readings, Not as good with collecting dust as some other models, Excellent CADR ratings ( 108 smoke; 114 dust; 127 pollen) for quick air changes, Whisper-quiet sleep mode for undisturbed sleep, 180 square foot coverage could be broader, Compatible with medical grade H13 HEPA filters, PM2.5 sensor for accurate quality readings, Very audible even on the lowest setting; resembling a whistling sound, Activated charcoal filter for absorbing bad smells, Solid smoke, pollen, and dust CADR (Clean Air Delivery Rate) numbers, Powerful UV-C light and true HEPA filter combo, PM 2.5 sensor for real-time air quality updates, UV-C light sanitizing for bacteria and germ, PureDirect technology allows for dual streams, Illuminated disc for air quality readings, 70/30 split air separator, for optimal distribution, Memory function for personal preference saving, Intuitive control panel with digital display, Too bulky for tabletops (12.99 x 6.73 x 16.34 inches), Little airflow at too lowest speed settings, Not the widest coverage area ( up to 270 ft). It helps sanitize and improve indoor air from allergens. The intended square footage is another very important factor, so you should measure the room you intend to purify before you add anything to your cart. UV C light, and filter change indicator. UV-C light intensity and brightness (254 nanometers). Medify MA-50 Air Purifier will set you back around 300+ dollars for a brand-new set. HEPA filters only capture live pollutants in the air with a higher capacity volume. Yes, UV air purifiers are safe but do emit some ozone gas byproducts, according to the Environmental Protection Agency (EPA). 114 CADR for dust and 127 CADR for pollen). Overall, the ultraviolet light intensity is strong. The filter reset function is only used after replacing the filter set to keep track of the filter life. WHY WE LIKE IT: This UV air purifier comes in a slim profile and filters rooms up to 167 square feet, an excellent choice for smaller spaces such as bedrooms. You can learn more about the differences between ionic VS UV air purifiers here. The sanitized air will be expelled out and recirculated back into the room. If you want the best of both worlds, we recommend getting a HEPA air purifier with a UV light that uses multiple filtrations to destroy airborne pathogens and purify the air. Most people will count on the 2 air changes per hour, which still cover a healthy 638 square feet range. In short: A compact but high maintenance 5-stage UV True HEPA air purifier that can eradicate germs before they spread. 2022 BDG Media, Inc. All rights reserved. A UV air purifier would be the better option as it can sterilize airborne microorganisms and fungi with no chance of growth. UV air purifiers are ineffective in removing large particulates like dust, pet dander, smoke, and odor. You can find UV in hospitals, industrial processes, medical equipment, water treatment, laboratories, meat processing, plants, and many other sanitizing appliances. A century-old technology that uses short-wavelength to inactivate mold, bacteria, flu viruses like H1N1, influenza, and rhinoviruses3 in the air. EPA agency recommends wearing face masks and practicing social distancing with air filtration systems. That way, you can pick an option that provides the most efficient, well-rounded air purification for your home. The shorter the UV light band, the stronger UV radiation is, and the most dangerous to living organisms. Standing for Clean Air Delivery Rate, this rating is a measurement of how fast air purifiers can clean the air. Again, we suggest leaving it at low speed for whisper-quiet operation while enjoying longer germs exposure time in the chamber. The single UV-C technology eradicates microorganisms by destroying their DNA and the replication cells. It is still suitable for a nursery home, dorm, bedroom, living room, dining room, kitchen, office, basement, and garage. Do pay attention to the UV light intensity, airflow delivery rate, the type of lightbulb, and the size of the air purifier. UV radiation contributes about 10% of the total sun's output. For example, ultraviolet light has a short wavelength between 100 to 400 nanometers, while visible light has a wavelength between 400-700 nanometers. It is the superior and effective air cleaning method. Lastly, the ionizer release ions to link with other positive ions pollutants in the air. Regardless of which type of form, you should avoid direct exposure, as UV radiation is carcinogenic to humans. The manufacturer's five-year warranty is a big vote of confidence in the air purifier's durability and reliability. Many health agencies, including the FDA and EPA, have reservations about appliances like UVGI, ionizer that emits hazardous ozone gas byproducts. Both functions are critical in extending the UV-light bulb's life and improving efficiency. As UV radiation will take its time to inactivate the pathogens, the carbon pre-filter traps dust, hair, and other large particles, plus mild smoke odors traveling inside. Buy this if you want complete filtration but don't mind the smaller coverage. Another strong suit of GermGuardian GG1100 Elite is the children and pet-safe setup. You will first need to measure the room size required for air purification. UV light can reduce smoke and odor particles, but it is less effective than a carbon filter chemical adsorption. Do not let children or pets go near a UV air purifier unsupervised. Again, it is entirely optional, where you can disable the function when not needed. In short: Pricey it may be, this is undoubtedly the best UV + HEPA performance air purifier to date. It is measured at 17.8 inches in height, 12.3 inches in width, and 6.3 inches in depth; not exactly as compact as touted. While both filtrations can remove airborne particles in the air, UV-C air purifiers are technologically superior to HEPA. The earth's atmospheric ozone will absorb most natural UVC rays before reaching the ground. The best UV air purifiers use ultraviolet radiation (primarily UV-C light) which can help reduce viruses, bacteria, and mold but that's not all they do. Potential health risks if it is not installed properly. You will have to rely on other filtration systems to impact indoor air quality positively. Teachers and students are also the perfect candidates, more efficient True HEPA filter over a HEPA-type filter, regularly vacuum or wash the filter to extend the usage life, UV air purifier will effectively kill 99.9% of mold, bacteria, viruses, and other pathogens in the air, Air Purifier's UV-C light is safe for humans to use. No other UV air cleaners here come bundled with this feature. Replace the lightbulb to restore its effectiveness. This UV air purifier is a well-diversified machine, with 5 stages of filtration that traps allergens, cuts down on odors, and incorporates a UV-C light for additional microbial fighting power. Why settle for just UV technology? Next, the True HEPA filter removes 99.97% of fine particles like pollen, pet dander, mold, and mildew. Here are GermGuardian AC5250PT key features: The air cleaner keeps you, your partner, and your pet happy. UV function is optional and can be enabled/ disabled at any time. Small and mighty UV HEPA machine. Best of all, the compact body does not hinder the ultraviolet intensity in any shape or form. Regardless of which direction you go with, always choose a model that passes the CARB requirement. The mentioned CADR is only at a low 80 cfm with minimal air cleaning coverage. Might kill good bacteria or viral proteins in biomedical products. bipolar Ionization and UV-C light technology here. The unpleasant smell similar to rotten eggs, garlic, or burnt hair is ozone gas byproducts produced during the breaks down of chemical bonds molecules. WHY WE LIKE IT: This UV air purifier features a true HEPA filter to eliminate up to 99.97% of airborne contaminants and provides coverage in rooms up to 167 square feet, an excellent choice for smaller kitchens and bedrooms. UVB and UVA radiation are less effective than UVC at inactivating the SARS-CoV-2 Coronavirus. With the nucleic acids destroyed, the microbes will be killed or left incapacitated and rendered harmless. There is no doubt an ultraviolet air purifier will protect you from airborne bacteria and viruses. PureZone Elite is fitted with complete 4-stage air filtration despite the slim tower profile. A safe disinfection technology that is widely used in hospitals and healthcare centers. The noise level is between 31 decibels to a loud 60 decibels in turbo mode, regardless of whether the UV-C light is activated. EPA does not recommend an ozone generator as it produces harmful ozone that can damage our lungs. There is less likelihood of you falling sick from contracting airborne germs and viruses. In determining the best UV air purifier to buy, we explored efficiency, versatility, and digital controls. WHY WE LIKE IT: This 5-in-1 UV air purifier comes with a pure pet filter, a specialized filter with an antimicrobial surface, excellent for pet owners who suffer from shedding every day. The damaged mold, bacteria, and mold will either be killed off or made dormant without the ability to reproduce. You can disable the anion generator if you have sensitive lungs and prefer to leave it off. The lamp's durability, temperature, humidity, and design will also impact UV performance. PureZone 3-in-1 True HEPA UV-C technology is virtually silent at most speeds. Keep in mind that other factors will also play a role in the UV sterilization, including: UV air purifier does have its limitation, according to Dr. Patricia Fabian, a Boston University professor specializing in housing, indoor air, respiratory infectious disease transmission, and GIS. You should only purchase a HEPA air purifier with UV light from a reputable manufacturer approved by CARB and AHAM. There are 5 fan speeds to choose from that co-relate with the ultraviolet light efficiency. An ionic air purifier or ionizer emits negative ions to pull down airborne pollutants without killing them. All in all, we were very impressed with how well-rounded this machine is. Hence, GG1100 is ineffective against large particles, mainly dust, hair, pet dander, and dust mites. You can read more about UV radiation and disinfection in FDA website. Most UV air purifiers use short-wavelength UVC light to destroy pathogenic microorganisms like mold, germs, bacteria, and viruses. Never point the UV light at other people's eyes as well. Another highlight is the aromatherapy feature, thanks to its built-in essential oil slot. Through photolysis, nearby oxygen (O2) in the air will break apart into two separate atoms and merge with other oxygen molecules to transform ozone (O3). In terms of maintenance, this 4-in-1 air purifier is very easy to care for, with a 6 to 8-month replacement schedule depending on filter usage. We do not recommend going for a model that uses UV light as its primary purification system unless it is used as a supplementary unit. No air purifiers on the list can come close to GermGuardian silent treatment. When indoor air is forced into the air purifiers internal chamber, the UV-C light irradiates short wavelength 254nm to break down mold, bacteria, and virus DNA/ RNA. Performs best when placed close to the sources e.g. On the other hand, an air purifier with a HEPA filter can trap a large concentration of pollutants in one cycle. SilverOnyx True HEPA is our favorite small UV air purifier simply for its inexpensive price tag yet packed with tons of value. Power consumption is good, but the noise level can also be an issue for those not OK with white noise. [] Easy to set up, minimal effort in cleaning/replacing the filter (which you rarely have to do depending on usage). You can cycle between the 4 fan speeds or choose night mode when you need to relax with minimal distraction. There are ways to remove allergens in the air; none is "killing" it like an ultraviolet air purifier. No other compact air purifiers even come close to SilverOnyx's multi-stage filtration, let alone a full-sized model. The only thing unchanged is the in-house 1-year warranty which is standard and bare minimum. In terms of airflow, this UV air purifier works well with solid CADR ratings for smoke (108), pollen (125), and dust (118). The air cleaner can effectively clean and sterilize up to 200 square feet of room space at max speed. Overdosage can degrade plastic, polymers, and dyed textile. That said, let's flip the switch and focus on the few downsides that this machine inherited. Below are the three primary types of ultraviolet light: UV light can damage all structures of the eyes from corneal, cataracts, and reduced vision with macular degeneration. The lightbulb is small but compensates with a high dosage. Plus, at only 9 x 5.5 x 22 inches, it offers a super slim profile that fits well beside couches, media centers, and nightstands without looking too out of place. In terms of air changes per hour, this UV air purifier is good for one full sweep of a 1,350 square foot room and is CADR-rated at 120+ CFM. Note that the UV light bulb efficiency will degrade over time. Since UV radiation does not generate much noise, Medify Air MA-50 air purifier can be used as a bedside model with the dedicated night mode. UV is technologically superior to a HEPA filter that inactivates pathogens and prevents them from multiplying. A timer function will also shut down the machine between 2, 4, and 8 hours to help converse energy. However, there is a big caveat with a plug-in air purifier that you should think twice before getting one. The best of both worlds. The closer the pollutants contact ultraviolet light, the better they will be sterilized. The built-in UV light radiates a 254 nanometers short wavelength to destroy small cell mold, bacteria, and viruses from multiplying at close proximity. Conversely, the longer the wavelength, the slower the vibration and the lower the energy. The single UV-C light bulb is well placed and protected inside not to crack easily. Let's look into the 4-stage air purification: PureZone Elite 4-in-1 UV-C Light + photocatalyst filter help combat seasonal allergies by eliminating common airborne viruses e.g. While we are at it, let's address the common complaint with HoMedics AP-T30, which is the noise. It is much more effective than a stand-alone UV sanitizer because it will cover a wide array of airborne pollutants. At a low under 150 dollars price, you have the familiar design with air intake position on both sides and air outtake right at the top. In auto mode, the air cleaner will only use a higher speed when a high concentration of pollutants is detected to conserve energy. Another bonus with this UV air purifier is its digital display panel, with an automatic timer (up to eight hours),. Additionally, look for Sleep Mode, which allows dimming of lights and noise levels at the lowest setting great for nurseries and bedrooms. For your convenience, the choices below are organized by smallest to largest room size. While some are designed for about 50 square feet (which is a good option for spot purification), others can cover multiple rooms. Internally, the updated gutsy DC motor output more power than a standard AC motor yet uses 82% less energy even with ultraviolet radiation. Another very well-rounded unit you should compare this with is the best large room air purifier. The pathogens' defective cells will lose the ability to reproduce, die off, and pose no threat to our health. We are also big fans of UV-C lights for an additional layer of protection battling microorganisms that can get past a filter. (However, the EPA notes that "effective destruction of some viruses and most mold and bacterial spores usually requires much higher UV exposure than is provided in a typical home unit," so keep in mind that it's not a silver bullet for air cleaning.). Available in White or graphite option, our preference is with the former, but ultimately the final decision is yours. Still, we have no problem finding a spot for typical residential homes. You are still at risk of contracting viruses that are non-airborne or from contact with an infected person. If you want the best of the best, Medify MA-50 is a sleek UV air purifier that stands at a slim 12.4 inches diameter and a tall 24.6 inches height. Light comprises a tiny discrete amount of particles or quantum of electromagnetic radiation called photons. There is no burning smell to worry about, and the photocatalysis cycle will continue until GermGuardian GG1100 Elite is turned off. This could be one of the leading germicidal air purifiers. The FDA regulates companies that manufacture, repackage or import UV medical devices sold in the United States. You will not hear the noise at a close-up. Unlike other portable air purifiers that slap a UV lamp without doing anything, you're getting the complete UV treatment that eliminates incoming airborne pollutants. Another study done by nature.com discovered that far-UVC light kills 99.9% of airborne Coronaviruses in 25 minutes. However, sterilization purification is very slow when compared with a HEPA filter. Moving to controls, Medify Air MA-50 tempered touched glass panel is easy to operate with clear indicators on every function. Best used against bacteria and airborne viruses smaller than 0.1 microns. For smokers, faster purifiers with high CADR scores are needed such as the best air purifier for cigarette smoke. More importantly, UV light/ ionizer mode is optional, and you can turn it off via the dedicated control button. WHY WE LIKE IT: This UV air purifier comes with a remote SensorPod and PureDirects proprietary dual airflow technology for bi-directional airflow, an excellent choice for people who want to optimize airflow in fewer opportunity locations, such as corners. The UV-C light is nicely tucked inside the machine, protected from unnecessary exposure. After analyzing hundreds of reviews, weve determined that the Pure Enrichment PureZone Elite 4-in-1 UV Air Purifier is the best UV air purifier you can buy. A study published in the American Journal of Infection Control (AJIC) found that a high viral load of SARS-CoV-2 was killed after nine minutes of UVC exposure. We also like that both Ion and UV-C sanitizer can be activated/ deactivated separately when not needed. The light bulb is nicely fitted inside the short 12.1 inches height and 6.9 inches width body designed for homes with limited room space. Pulsed xenon lamps are commonly used in hospital settings that emit a short pulse of a broad spectrum. The lack of standardized UV measurement against airborne pollutants is another common issue. Buy this if you're on a tight budget for a multi-stage UV air cleaner. Other air purifiers will get you a better filtration with a dedicated preliminary filter and separate activated carbon filter. UV light bulb requires replacing as the radiation intensity will deteriorate over time. ` The indicated online price guides as follows: $ = under $50, $$ = $50-100, $$$ = $101-200, $$$$ = 201-300, $$$$$ = $301-400, $$$$$$ = 401-500, $$$$$$$ = over $500. Simple and effective UV + HEPA combination. For medium room sizes, go with a model that can reach up to 400 square footage. Auto mode will increase the fan speed when a high volume of pollutants is detected. It is UL listed and CARB verified with ozone output less than 0.05 ppm (asthma-friendly). Avoid those models, as exposure to ozone can cause chest pain, shortness of breath, cough, throat irritation, and scarring of lung tissue. However, the main drawback to a pluggable unit is the filtration depth. A UV air purifier will effectively kill 99.9% of mold, bacteria, viruses, and other pathogens in the air, including COVID-19, when given sufficient exposure time. As such, the supporting filters are vital in the purification cycle. WHY WE LIKE IT: This UV air purifier includes smart controls for real-time air quality monitoring and covers rooms up to 355 square feet, an excellent choice for people who want to gauge air quality in real-time. The fan speed will always be kept at the lowest until there is a need to tackle bad air quality. A study conducted by Duke University Medical Center and the University of North Carolina Health Care concluded that UV light help reduces more than 91% of pathogens in a hospital. Without the dependability of a filter, there is an abundance of UV rays exposure time to kill off germs, bacteria, and viruses. The rest have additional filters, too, the most common of which are HEPA (which removes at least 99.97% of particles 0.3 microns or larger) and activated charcoal (which absorbs odors and moisture). Once plugged in, the front circle LED ring will glow, letting you know the UV-C sanitizer is working. The lack of an ionizer means it can be 100% ozone-free for pets, children, or people with asthma or impaired lungs, providing only mechanical filtration is used. Some manufacturers sell inferior products yet make up fake claims on the UV effectiveness to trick people into buying one. Price under 200 dollars, HoMedics annual filter cost is low, and the UV-C light bulb has a lifespan of 10,000 hours. Buy this if you want strong UV and HEPA performance at a reasonable price. Both devices are safe for home use, unlike an ozone generator. That's twice as expensive as some air purifiers on this list. Improper handling of UV air purifiers can worsen indoor air quality instead of improving it. The limited airflow means it is unlikely pathogens in the air will be exposed sufficiently in the UV chambers for sanitization. Real-time air quality monitoring with color-coded LEDs or Bluetooth/WiFi app compatibility is a plus, but not offered by most of the picks on our list. To rectify that, most UV air purifiers come with a coated lamp or ozone block that reduces ozone emission to an insignificant level. Versatility and digital controls with UV air purifiers are very important. This units biggest draw is air distribution, combining dual airflow for two air streams and a 70/30 split air separator, which works in better-distributing air throughout the room. It has a good balance in price, performance, and functionality. We love this UV air purifiers suite of digital features for indoor air, starting with an automatic timer with preset run times (2 hours, 4 hours, and 8 hours) and the choice of three fan speeds. One even has special additional screens that pre-filter the air, further protect against bacteria, and absorb formaldehyde but the extra purification systems you opt for will largely depend on your unique needs. It is better at destroying airborne microorganisms and pathogens. The saving grace is the low annual filter cost is around 40 dollars, including the replacement UV lamp; way less than other brands' upkeep costs. Some models focus on the power of germicidal irradiation, while others offer an affordable price point. UVA is the most harmful as the ray can penetrate deep into your skin, causing the skin cell to age prematurely and lead to skin cancer. Thankfully the UV light has a longer 10-12 months life and is only 29.99 dollars to replace. Ozone is an unstable colorless gas that can induce coughing, chest tightness, sore throat, inflammation, headache, and shortness of breath. Smells disappear within a day, particularly in the nursery. For small room sizes, go with a desktop air purifier that can cover up to 200 square footage of air cleaning. This best UV air purifier for a large room is an absolute workhorse, starting with four-stage filtration that uses a pre-filter for larger particles, a true HEPA filter for ultrafine particles (bacteria mold), and an activated carbon filter plus UV-C light for smoke, odor, bacteria, and germ-killing. The effectiveness of a UV air purifier is affected by the UV light dosage, the length of exposure time, and the distance from the light source. There is also a 2, 4, 8 hour timer to turn off the machine and a filter reset indicator reminding you to replace the filter. Further complimenting the noiseless operation is the low power consumption at only 3.5 watts hourly. A HEPA air purifier can quickly capture 99.97% of airborne pollutants as small as 0.3 microns. The carbon filter neutralizes cigarette smoke, chemical fumes, and pet odor via the chemical absorption material. CADR numbers are solid (116 smoke; 123 dust; 128 pollen) for multiple air changes per hour, cutting down on 99.97% of airborne contaminants as small as 0.3 microns. Just plug it into a wall socket and let the UV sterilization work quietly in the background without the need for configuration. Design-wise it is rather conventional, with a large front air inlet occupying most of the space. There is also an antimicrobial coating on the filter that inhibits the growth of microbes that somehow manage to survive UV radiation. Never stare directly at ultraviolet light. Thanks to its touch-button controls, it's easy to switch between three fan speeds and three timer settings, plus it's clean and sleek-looking. The activated carbon filter absorbs smoke particles from pets, food, cigarette, and noxious chemicals like formaldehyde, benzene, and carbon dioxide. In short: Affordable HEPA air purifier with UV light technology. The UV lightbulb has a limited lifespan that gradually drops about 15% of its power annually. We really like this UV air purifiers overall effectiveness, starting with a 3-stage filtration setup consisting of a pre-filter, true HEPA filter, and activated carbon fiber to hit airborne pollutants as small as 0.3 microns good enough for rooms up to 355 square feet. The low power output also means there is no fire risk where you can leave it on while youre away for work or travel. It helps sanitize indoor air so you can enjoy breathing in cleaner air and sleep better.