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17 Best Air Purifiers (Review) In 2021

Written by:
Unclutterer
Last Updated: March 3, 2021
Show Contents
Contents
  • The Best Air Purifier
  • 1. Winix 5500-2 True HEPA Air Purifier
  • 2. Coway AP-1512HH Mighty Air Purifier
  • 3. LEVOIT LV-H132 Air Cleaner
  • 4. LEVOIT LV-PUR131 H13 True HEPA Filter Air Purifier
  • 5. Molekule Mini + Air Purifier
  • 6. RabbitAir MinusA2 SPA-700A
  • 7. Germ Guardian Desk Air Purifier
  • 8. Coway Airmega 400 Air Purifier
  • 9. IQAir HealthPro Plus Medical Grade Air Purifier
  • 10. Blueair Blue Pure 211+ Air Purifier
  • 11. BISSELL air360 Smart Air Purifier
  • 12. Germ Guardian UVC Sanitizer Air Purifier
  • 13. Medify MA-25 Medical Grade H13 Air Purifier
  • 14. Vremi True HEPA Air Purifier
  • 15. Germ Guardian AC4825 Tower UVC Air Purifier
  • 16. LEVOIT Vital 100 Air Purifier
  • 17. LEVOIT Core 300 Air Purifier

Air purifiers are used in the home, hospitals, and locations requiring removal of particles that can cause issues with allergies. There is a huge variation between the best purifier and the worst which is why we reviewed 17 to make sure that there are purifiers suitable for your needs. As a machine that is designed to remove contaminants and pollutants from the air, it is created to improve indoor air quality. They are made to collect impurities and improve the air that you breathe and are especially good for sanitizing the air you breathe, be it the home or office. If you are looking to clear airborne particles, clean the air in your work or home space, and improve the air quality in your space, we reviewed purifiers that may suit your environment. And, you will want it to run quietly so we tested that too.

The Best Air Purifier

1. Winix 5500-2 True HEPA Air Purifier

Best Choice
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Key Features

    Noise level 27.8db

    360sqft rated

    0.3 micron collection

    4 fan speeds

    LED environment indicator

    Weighs 15.4lbs

    CADR rating

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Winix 5500-2 True HEPA Air Purifier
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The Winix 5500-2 True HEPA Air Purifier is our best choice for being the cleanest and most hygienic at its price. It works great as a large air purifier with a washable filter that can be used repeatedly to achieve the breakdown of allergens, pollens, dust mites, and chemical vapors that can otherwise harm the environment. The clean air delivery rating (CADR) ensures that the Winix 550-2 is suitable for up to 360 square feet of space.

    Pros

    Great value

    Filter replacement indication

    Judges the air and works to clear impurities

    Cons

    Carbon filters can’t be washed

    Not for heavy-duty use

2. Coway AP-1512HH Mighty Air Purifier

Best Value
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Key Features

    Clears rooms up to 361sq ft

    77 watts power

    Between 24.4 to 53.8 dB

    Weighs 12.4lbs

    True HEPA filter

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Coway AP-1512HH Mighty Air Purifier
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True HEPA is known for offering safe air to both homes and businesses and the Coway AP-1512HH Mighty Air Purifier on our list is the Unclutterer choice for the best value in its range. It kills inactive bacteria and germs in busy places and is especially good for purifying air and getting rid of allergens and odors. You may like that its lights show how clean or polluted the air is, and that it has various fan speeds with auto shut-off when the air quality is deemed clean.

    Pros

    No batteries required

    Replacement filter not needed regularly

    Removes odors

    Shuts off automatically after up to 8 hours

    Cons

    Can circulate cold on the highest setting

    May develop noise upon constant use

3. LEVOIT LV-H132 Air Cleaner

Budget Pick
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Key Features

    100% ozone free

    True HEPA filter

    Quiet to 25dbs

    Weighs 6.6lbs

    14.5 inches at largest point

    86sq ft purifying space

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LEVOIT LV-H132 Air Cleaner
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Our budget pick is the LEVOIT LV-H132 Air Cleaner that contains true HEPA filters for purifying and cleaning pollutants and odors. We like that, at the current price, it is small and neat but powerful enough to clean allergens, pollens, smokey air and even pet dust from the air in the room you wish to treat.

    Pros

    Night light option

    Small to medium-sized rooms or offices

    Replacement filters available

    Small compact size

    Cons

    Built for small spaces

    Filters need to be regularly replaced

4. LEVOIT LV-PUR131 H13 True HEPA Filter Air Purifier

Ozone Free Pick
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Key Features

    Genuine replacement filters

    True HEPA filters

    Weighs 11.2lbs

    Electric purifiers

    Cleans max. 900sq ft

    Up to 27dbs

    120 volts

Check Latest Price
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LEVOIT LV-PUR131 H13 True HEPA Filter Air Purifier
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The second of our LEVOIT is our ozone free pick. You might like that LV-PUR131 H13 True HEPA Filter Air Purifier has a sleep mode that you can control through Alexa too. We found it was great for the lounge and bedroom, and larger spaces like the kitchen where you can remove and control allergens and smoke from cooking. While it doesn’t read the CO level as a carbon monoxide detector, it still filters it from the ar. The true HEPA filter means that it traps fine particles and spores as well as removing fumes.

    Pros

    Cleans large surface areas

    Has a carbon filter

    Quiet

    Cons

    Filters need to be replaced regularly

5. Molekule Mini + Air Purifier

Small Form Factor
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Key Features

    24 hr safety running

    PECO filter warning

    360-degree air intake

    250sq ft

    Supports 240 volts

    Weighs <12lbs

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Molekule Mini + Air Purifier
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As our small form factor air purifier, we included the Molekule Mini+ which promises to remove air particles and pollens whilst keeping the atmosphere pollen-free. While it isn’t our cheapest option it will clear the air in as much as a 250 square foot space. It promises to destroy particles where others just ‘vacuum’ them up.

6. RabbitAir MinusA2 SPA-700A

Wall Mountable
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Key Features

    5 year warranty

    Standalone or wall mounted

    Up to 700sq ft

    HEPA filters

    Washable filters

    Weighs 24.2lbs

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RabbitAir MinusA2 SPA-700A
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As our wall mountable choice the RabbitAir MinusA2 came in first. It promises to have filters to clear germs, odors, pet dander, toxins, and other chemicals. This model comes with a number of filters which are designed to clear and purify air while having night and day lights which activate remote and more productive levels when space is darker or lighter.

    Pros

    Remote controlled

    5 filters

    Can be wall mounted

    Cons

    Needs batteries

    May not remove smoke particles

    Might produce ozone

7. Germ Guardian Desk Air Purifier

Best Desk Pick
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Key Features

    Active charcoal filter

    11 inches tall

    3-speed settings

    UvC light option

    Up to 78sq ft

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Germ Guardian Desk Air Purifier
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The Unclutterers’ choice for our best desk pick was the Germ Guardian Air Purifier designed to sit on your desk. Whether you have a home office or need something extra on your desk at work, this purifier will clear germs and allergens and help to clean the air in your immediate surroundings.

    Pros

    Clears nose itches and helps with watery eyes

    May clear slightly larger areas than advertised

    Nice looking design

    Cons

    Can be slightly loud

8. Coway Airmega 400 Air Purifier

Premium Pick
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Key Features

    1,560sq ft air purifying

    43.2db maximum

    3 setting airspeed

    64watts power usage

    5-year warranty

    Smart mode technology

    Weighs 24.7lbs

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Coway Airmega 400 Air Purifier
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Our premium pick comes from the Coway Airmega 400 which is an air purifier that you will notice doesn’t take up a great deal of room. It’s a graphite color and stands alone where you need it too, whether that’s on a side surface or in a neat corner. You may like the smart feature which allows the unit to adjust to its surroundings with a promise that it doesn’t compromise on air filtration. It also contains filters that are fitted with an external indicator to let you know when they need to be replaced. As always with air purifiers cleaning and replacement can be frequent depending on the amount of usage the air purifier ensures.

    Pros

    Motor and electronics covered for 5 years under warranty

    4 setting timer at 1, 2, 4 and 8 hours

    Automatic fan speed detection

    Cons

    Warranty limited to internal faults for 1 year

    Air efficiency lost if used to full capacity

9. IQAir HealthPro Plus Medical Grade Air Purifier

Best For Medical Environment
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Key Features

    1,125sq ft purifying

    Clears 0.003 micron particles

    HyperHEPA filter

    Virus filtration

    Ultrafine particle clearance

    27 to 215 watts output

    Weighs 35lbs

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IQAir HealthPro Plus Medical Grade Air Purifier
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Looking for the best for medical environment for air purifying? The IQAir HealthPro took our notice as a medical-grade proven appliance that uses powerful air filtration and promises to purify air in up to a space of 1,125 square footage. It prevents ultrafine particles that cause bacteria and viruses with a HyperHEPA filter that is third-party tested to ensure its efficiency in the most hygienic environment.

We like the fact that this clears and filters particles down to 0.003 microns where a standard HEPA filter is suitable for less susceptible living areas, giving filtration down to 0.3 microns. It has a patented triple-seal technology too which means the frame is airtight and does not omit any air leakages.

    Pros

    Filter monitoring for pre-empting replacements

    Programmable

    No batteries required

    Full signature requested upon delivery

    Professional and medically tested

    Removes tiny particles

    Cons

    Recommended to buy through IQAir, not resellers

    The 3 filters are not washable

    Filter replacements can be expensive

    Professionally priced at $899 (at time of writing)

10. Blueair Blue Pure 211+ Air Purifier

Low Energy Consumption
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Key Features

    30 to 60 watts consumption

    540sq ft purifier

    3-speed fan

    Washable pre-filter

    Weighs 13lbs

    20.4 inches tall

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Blueair Blue Pure 211+ Air Purifier
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We were looking to review an air purifier with a low-cost energy consumption because filtering air only at certain times of the day such as when we come in from work and then turning it back off again later, or indeed switching it on for twenty-four hours, isn’t always the best way to use electricity. That said, many of us really do need air filtration around the home, studio, or office all through the night and day, and using an air purifier that is economically effective as well as actually doing what it promises is vital for health and wellbeing. You may like the design on Blueair Blue Pure 211+ Air Purifier and that it sits well at just over twenty inches and is of a slim build so it doesn’t encroach into your space.

    Pros

    Independently tested

    Impressive design

    Economical

    Lower fan speeds/less noise

    One button control

    Cons

    May give off chemical smell when new

    Carbon filter might not be strong enough to clear the most powerful odors

11. BISSELL air360 Smart Air Purifier

Style Pick
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Key Features

    1000sq ft filtration

    Pet friendly

    Fan speed adjustment

    0.3 micron airborne particle filter

    25 inches tall

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BISSELL air360 Smart Air Purifier
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Lots of us are conscious about the air around us, and many of us don’t choose to buy items that although they work to do the job they are intended for but also that we purchase products that fit into home decor without sticking out too much. The Unclutterers’ choice as best style pick is the BISSELL air360 which uses a unique cirQualte process to clean air from things like pet dander, odors, and allergens but it looks good too.

    Pros

    Supports BISSELLs’ pet foundation and homeless pets

    Great for living areas, offices, studios, bedrooms and more

    Speed, reset, and power functions

    Lifts odors from pets, cooking, smoking

12. Germ Guardian UVC Sanitizer Air Purifier

Best Tower Air Purifier
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Key Features

    120 volts

    Single charcoal filter

    Ultra-quiet sleep mode

    Weighs 11lbs

    164sq ft

    28 inches tall

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Germ Guardian UVC Sanitizer Air Purifier
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If you are looking for an air purifier that doesn’t take up much floor space yet promises to remove harmful dust, pollens, and general household smells then we looked at the best tower air purifier we could find that fits with the majority’s budget. We like the fact that there is just one filter to replace when needed and, depending on the amount of usage, this should only be up to every 6 months. Germ Guardian UVC Sanitizer Air Purifier looks as neat as a winter heater might yet it has features to help clear your immediate air and filtrate pollen and allergens around the room it is placed in.

    Pros

    4-in-1 air purifying

    Lightweight

    Portable

    UVC sanitizing

    Quiet operation at lower speeds

    Cons

    Fan can be loud at top 2 speeds

    Light display can be bright in dark rooms

13. Medify MA-25 Medical Grade H13 Air Purifier

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Key Features

    Dual filters inc. TrueHEPA

    Up to 500sq ft purifying

    13.5 inches tall

    Lightweight at 8.3lbs

    4-setting timer

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Medify MA-25 Medical Grade H13 Air Purifier
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The TrueHEPA filter can remove particles down to just 0.3 microns in size and although the Medify MA-25 is pretty small it promises to cover medium to large spaces of up to 500 square footage, so it’s great for the lounge, office, studio or bedroom. The carbon filters will remove odors from the kitchen, smoke scents, and prevent circulation of dust and allergens around your space. It is designed to be compact and portable from room to room, and it runs at a low noise level (3 settings). It has a child safety lock too which is a great feature if you intend to use it around young kids. Good performance for such a compact model.

    Pros

    Easy cleaning

    Compact

    Quick access to filters

    Doesn’t need batteries

    Cons

    Filters must be replaced with same-brand equivalent

    Must remember to sign and return for warranty cover

    So lightweight it feels a little cheap

14. Vremi True HEPA Air Purifier

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Key Features

    Up to 300sqft purifying

    TrueHEPA filter

    3-stage filtration

    Built-in timer

    15.5 inches tall

    Weighs 6.9lbs

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Vremi True HEPA Air Purifier
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Vremi True HEPA Air Purifier is a stylish looking model which is fairly light and versatile as it weighs enough to move around rooms if you need to. The automated air sensor lights show you when the air is in need of filtration – after dusting an area you will see that the lights change to red and the appliance adjusts itself to suit. It seems to work to reduce damp type smells in a room, as well as pet scents, residual smokey smells and it clears dust and pollution through use of a large particle filter, a TrueHEPA filter, and a carbon filter for finer molecules.

    Pros

    Air quality sensor

    Night light with brightness levels

    Compact

    Sleep mode noise maximum 28dbs

    Cons

    Some might prefer night mode to have low-level light

    MUST remember to remove plastic from filter before use

15. Germ Guardian AC4825 Tower UVC Air Purifier

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Key Features

    22 inches tall

    4-in-1 filtration

    167sq ft purifying

    6ft power cord

    Weighs 7lbs

    120 volts

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Germ Guardian AC4825 Tower UVC Air Purifier
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The Unclutterer team chose this air purifier to review, the second from this brand in our review list. The pre-filter on the GermGuardian AC4825 Air Purifier is something we seem to like as it promises to prolong the life of the TrueHEPA so that it needs replacing much less often than it would without a pre-filter which removes larger particles of dust and pollutants before it has a chance of reaching the HEPA. It also has a carbon filter, a very popular addition which filters out finer allergens, cooking scents, and lingering odors. You might like to run this model at night and the lowest setting offers a quiet operation mode if you don’t mind smooth white noise during an evening’s sleep. As with all electrical appliances, do not leave switched on without supervision.

    Pros

    Smart design in black or white

    Filter change indication

    3 speed settings

    UV-C sanitizer

    Cons

    Filter can’t be washed, only replaced

    HEPA filter change expensive if used continuously

    Only 73% 5*reviews on major

    May emit a light, almost metallic smell during operation

    Unit can get warm to touch

16. LEVOIT Vital 100 Air Purifier

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Key Features

    TrueHEPA filter

    55 watts

    3-stage filtration

    Weighs 10.3lbs

    Max. 23dbs sound

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LEVOIT Vital 100 Air Purifier
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Energy efficiency is built into LEVOIT Vital 100 Air Purifier and it can purify air in spaces of up to 975ft in just an hour. You might like that it has a carry handle and is easy to move from room to room at its lightweight 10.28 pounds. It runs quietly which is ideal for the bedroom, office, and nurseries and it has a handy filter monitoring light which indicates when this needs to be replaced. It has a pre-filter which collects larger dust particles, pet dander, and small fibers and the TrueHEPA to catch finer molecules like bacteria and pollens. Finally, the carbon filter helps to eliminate odors so ideal for the kitchen and pet living areas.

    Pros

    Helps with allergies

    Clarifies the air

    Works rapidly – 3-speed control

    Modern sturdy design

    Doesn’t product ozone

17. LEVOIT Core 300 Air Purifier

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Key Features

    Up to 219sq ft

    High performance

    120 volts

    24dbs sleep mode

    3-stage filtration

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LEVOIT Core 300 Air Purifier
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The Core 300 by LEVOIT is small but powerful. We like the cylindrical design and its three fan speeds that are easy to control but this model is quiet enough for you to not realize it’s in the room so soothing enough for a good night of sleep and no loud noises to interrupt you as you work or to frighten children or pets. You might like that it’s small enough to sit on a table surface or on a floor and doesn’t get in the way, but not so small that you consider it won’t work as promised. It’s a great price and works effectively and you can buy different filters designed to clear air of various particles – pet allergens; strong smells; general purification; MB filter for mold and harmful germs.

    Pros

    Ozone free

    Modern and compact

    Energy-efficient to meet strict standards

    Filter replacement sensor

    LED can be switched off at night for zero pollution

    Cons

    Branded filters can be expensive to replace

    Regular cleaning of pre-filter recommended

Features To Consider With Air Purifiers

When you are considering an air purifier it's important to make sure it contains a filtration system that can do the job of clarifying particles in the air. Most modern purifiers use activated carbon with HEPA air filters that work together to clean indoor air. We have listed a number of facts and features in our product review for a range of air delivery clarifiers, but finding the best air purifier to suit your needs first means that you need to research certain types and have an understanding of how certain air ratings are achieved.

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ACH Rating

ACH stands for 'Air Changes per Hour and a purifying device will normally be labeled as, say, 3x or 5x. This basically tells us how many times the air is circulated around a space within an hour. In brief terms this is an important rating - the lower the number, the worse it is at cleaning the air than one rated higher so 6x filters six times an hour, and is better than 5x which cleans five times an hour, etc. The better the rating, the better it is at freshening the air. There is some additional mathematics you can use which can tell you how much extra space in cubic feet, or square feet, can be achieved but we'll leave this to the experts. You could search for it using CFM (cubic feet per minute) which is shown on all models under their specification, then use your favorite search engine to find out more about maximizing your purifying product usage.

CADR

CADR stands for 'Clean Air Delivery Rate' and this outlines how well the product can clean air throughout a specific space. It's a certified measurement that provides manufacturers with a standard rating to supply consumers with, and a good measure that gives you help when comparing purifiers. Although there are certain mathematical techniques used to reach the CADR rating, in basic terms the higher the CADR  number gives you an evaluation of how effective the product is at cleaning the air. So a CADR of 400 would be more efficient and clean the air better than air purifiers with a CADR of 300. The CADR 400 is speedier at cleaning airborne particles than one advertised at CADR 300.

Ozone (benefits and downfalls)

Ozone is something that is produced in order to break down and react with any type of thing that it comes into contact with. This has advantages and disadvantages, in fact, the same thing that makes it great can also make it a danger in certain circumstances. Ozone can be effective at breaking down airborne pollutants and dust pollen as well as mold spores and mildew, so a purifier that produces ozone can be beneficial. A HEPA filter and a TrueHEPA filter is usually designed with in-built ozone filtration to remove odor. When these filters are combined with pre-filter (for collecting dust pollen and particles) and an activated carbon filter, a device can trap around 0 3 microns at 99.97% effectiveness.

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Ozone (best used by professionals)

If ozone is being produced enough to eliminate smells, it can also trigger reactions in your eyes, nose, skin, and lungs. It is highly recommended that when purchasing an air purifier that it isn't for residential use as the emissions can be harmful. In fact, they are powerful and should only be used in controlled environments - and may be dangerous to small animals as it's a volatile chemical. Ozone producing air purifiers can deliver clean air in, say, environments that have recently flooded, because residents and pets would be removed from such concern before professionals get to work.

Energy Efficiency

Even an energy-efficient purifier will consume on average around the same energy as a modern refrigerator but of course, this is dependent on the model and energy input it requires to run effectively, and the energy output it produces. It is recommended that they are used where you sleep, work, and spend time around your space for around 10-12 hours to keep the air around you clean - this means, for example, one that is rated 5x over twelve hours will run the air around the filtration system 60 times. Some people will set the device on high for a short time before using a room, then turn the intake down to reduce noise. It is not recommended to run any residential air purifier when there is nobody home so always switch it off when you are out. This is for safety as well as ensuring you are not wasting energy.

Room Size

If you are looking to reduce the spread of viruses and searching for a purifier that will help clear airborne particles and bacteria you will need to make sure you buy the right one for your space. Most of the best air purifier models will filter air in just minutes, dealing with particles like mold, those from pet hair, dust, allergens, and more. Depending on which space you intend to use a purifier in, the room size is important; buying a device that covers 220 square feet and putting it into a room double that size will mean that it isn't as effective as it should be. When reviewing air purifiers, take a look at the room size and the square feet that it advertises, and don't forget to do your own sums so you know the calculations before you start. You will only find the best air purifier for your room/s if you don't 'guess' the area size. If you are buying just one device and will move it around the home, get an air purifier for the largest room which has adjustable fan speeds so you can turn down the intake for smaller spaces.

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Room Placement

The room which you use the most should ideally provide the best results. If you suffer most from asthma or allergies during the night then the bedroom is the best place. Get the placement within the room too. For example, in the bedroom, air purifiers should ideally be placed up to eight feet from the headboard so you feel the full benefits but not the draft from the device. If you are placing air purifiers in a selection of rooms, make sure that you don't put them behind furniture as they need to pick up on the air quality of the whole room. Generally, the intake is at the front of the machine, some at the top, so to get the best from your machine avoid under shelving units either.

Noise Level

The majority of modern air purifiers are designed to be as quiet as possible while still using a powerful motor. Look at the manufacturers' specification if the noise is going to be an issue for you, your family, and your pets. The quietest air purifiers will run up to 25 decibels (dB) and the loudest can be up to 70 to 75 dB. When operating an air purifier you will find that those with different filters will run at different noise levels. Those with HEPA filters will make noise when the motor is switched on. Some air purifiers have a night mode or can be adjusted to run at a lesser fan speed and therefore built to be quieter on these settings. You can run the device on high before you enter a room for a short while to clean the air quality rapidly, then turn down the intake or switch to night mode while you use the room. An air purifier built with an air ionizer runs quietly in the majority of cases while still clearing indoor air but may not work as effectively as those with HEPA filters.

Filtration System

Let's begin by stating that upgrading air quality is a benefit that you can't see. Unlike, say, an air conditioner where you will feel the cool air and its obvious benefits, clean air is invisible so to reduce the risk of overspending or purchasing the wrong purifier, research the type of filtration system that best fits your needs. Let's start with the well-known term 'HEPA filters':

A High-Efficiency Particulate Air filter is superior to any washable types. It is replaceable and depending on how you use the device and its capacity the new HEPA should be changed every six months up to a year or two. Don't be fooled by this 'buzz word' though, whilst this type of filter works well, it will not do the job of 'medical grade' filters. If you need a medical-grade system, expect to pay plenty more for a professionally certified medical grade purifier.

A HEPA-based device is not the same as one that uses a true HEPA filtration system. True HEPA filters will remove particles as small as .3 microns, look out for that familiar figure a manufacturer or retailer uses - "certified to remove 99.97% of particles."

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Speed

Adjustable fan speed is a must whether it is changed on the device switches directly, via a smart app, or a remote. This is both for noise control and electricity usage. Turn the fan speed on low or set it on high for a short while before you enter a room if you want it to run yet not be over-noisy. Highest speeds will ensure that the device is working at full capacity, clearing the space using it's ACH rating.

Warranty

It's essential to know who is selling you the product if there is a warranty available and if it needs to be registered (and who with), what it covers, and of course how long it lasts. Some will offer an optional extended warranty in addition to its standard guarantee (sometimes free upon optional registration, sometimes a small fee is required). Some retailers will offer a 30-day general money-back warranty, with manufacturers promising a full year or more. The filter in an air purifier is a consumable item. Even if a filter can be washed it will still need to be replaced eventually, and a HEPA filter, in general, cannot be washed at all. Warranties are minefields so check all the small print first as you may find it only covers certain faults or is restricted to workmanship defects.

Size

For the best air purification, the size and capacity of the device depend heavily on the room size. Simply measure the square feet of the room or adjoining rooms. For instance, if you are intending to use it in the lounge at 300 square feet, and the office at 200 square feet, you will need to find a purifier with a CADR rating of 500sq ft.

Remember that it isn't the size of the device itself, but its ability to provide clean air in the space you intend to use it. Also, remember that air is a volume and not an area so the square footage takes into consideration the height of the room too.

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Smart Features

Smart air purifiers will give just as good air quality as expected but they have extra features that help make its usage more rewarding. Look for things like:

  • Filter maintenance sensor
  • Air quality monitoring
  • Remote and/or voice control
  • Real-time history monitor

Don't spend more on a smart purifier if you aren't taken by the features, go for a lower-priced non-smart model.

 

Air Purifier FAQ

Q: Do air purifiers really work?

A:

In a word, yes. They clear the air using a variety of pre-filters, activated carbon filters, and often HEPA or TrueHEPA filters. They do not, however, replace other ways to clean your home, office, studio or alternative areas - they help clear airborne pollutants like pet hair and dander, dust, mold and smells but do not clean surfaces so bear in mind they are used to compliment your other types of housework.

Q: How long does it take an air purifier to clean air in the room?

A:

You will need to know the fan speed, the size of the area the device will be used in, and of course that the purifier is built to the capacity of the room size. Generally speaking, with most air purifiers you can expect to notice a difference from 30 minutes to 2 hours on high speed and can turn down the intake (or fan speed) after this time to save energy while it is still operating.

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Q: Is it ok to leave the air purifier on all night?

A:

It is recommended to leave an air purifier on during the evening while you sleep. In brief terms if you are indoors, leave the purifier running. Always switch the unit off when you leave for work.

Q: Do air purifiers kill viruses?

A:

There is no air purifier that can kill viruses and bacteria 100%. They can, however, collect a large portion of airborne particles and once pollutants have been captured, they can not multiply, so an air purifier or multiple air purifiers around the home or space does have additional support to the body's own immune system.

best air purifier

Q: Do air purifiers make the air dry?

A:

In a word, no. Your device is designed to collect particles from dust, mold spores, pet hair and dander, and pollen. It does not capture moisture from the air. But if you want to control the humidity in the room, you can do it with devices like humidifiers and dehumidifiers.

Q: Does every room need an air purifier?

A:

Not really. It makes more sense to put air purifiers in the rooms you use the most. If you suffer most at night then it makes sense to put a device in the bedroom, in the same way, if you use the office most of the day then place one in that space so it operates while you work. If you get a full-house purifier system it's worth making sure that an investment of up to $6000 plus fitting is worth it, this is truly only wise for those requiring full systems for medical purposes. For the majority of us, it makes economic sense to buy single units in the rooms that get most use.

Sources

    What is the Best Location for an Air Purifier? – Rabbit Air

    5 Air Purifying Tips for Cleaner Air in Your Home - AHS

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