It is not hard to understand why many people are searching for ways to handle airborne allergens. Eliminating these can go a long way to bringing order and peace in one’s life.

You are probably wondering whether to use air purifiers at home, having heard how good these can be for cleaning the air. Well, the therapeutic benefits are real and can be lasting, especially for those who are sensitive to airborne allergens.

A good room model will provide relief from asthma and allergies caused by dust, smoke, pollens, dander, pet droppings, and various microbes. You are just as likely to need one if you have pets or people smoking around the house and have nasty smells to get rid of as well.

Do you have a smoker in the house? See our best air purifiers for smokers

The popularity of cleaning indoor air at home has seen a wide range of models arriving, with HEPA designs becoming bestsellers. Some air purifiers offer additional filters for toxic chemicals and odorous vapors. The most advanced designs integrate multiple filtration stages, using media that are more effective in combination but are usually pricier as well.

Finding an air purifier that works at home should not be hard. However, you may find yourself confused by the sheer range of models being sold. To help in the search, we review here a few that we believe to be among the best available.

Top 7 Air Purifiers For Allergies In 2018

ModelOperationTypeCADR (cfm) 
Blueair Classic 605 Air Purifier (Editor's Choice)HEPA, electrostaticFloor350
PIONAIR 750 Smart PointeElectrostatic, UVDesktopN/A
Koios Desktop Air PurifierHEPA, ElectrostaticDesktop160
Alen Paralda HEPA Dual Airflow TowerHEPA, Electrostatic, UVFloor150
Levoit LV-PUR131HEPAFloor135
Alen T500 DesignerHEPA-TypeFloor159
LG AS401VGA1HEPAFloor205

Blueair Classic 605 Air Purifier

best purifier for allergies 2018This model uses the firm’s trademark carbon-backed media to eliminate various airborne particles such as dust, molds, mite droppings, dander, and pollens among others.

A hybrid of electrostatic treatment and mechanical filtration, its HepaSilent filter offers True-HEPA performance without the noisier operation of regular HEPA designs and the constant cleaning requirements of ionizers.

Fine wires minimize the generation of ozone even as they ionize inbound particles negatively. These are then filtered by size in a progressively denser maze of filters. Activated-carbon pre-filters are separately available for handling odors from pets, fumes, cooking, and other volatile organic compounds (VOC).

The unit can be located right next to most walls due to its airflow pattern, which pulls in room air along the sides and bottom while pumping out purified air along the top and edges. Its 4-speed fan lets you set the unit to circulate air more than five times every hour, the recommended minimum air changes per hour that ensures constant distribution of freshly cleaned air.

Boasting one of the highest CADR (dust/smoke) ratings in the industry of 350, this model is appropriate for most residential and office interiors and can handle rooms as large as 700 square feet in area.

We did like its metal construction, the unit was solid in operation and is likely to last if maintained well. Wheel casters let you roll its heavy body to whichever room it is needed. Regular vacuuming will help to keep obvious dust at bay, enabling the main filter to gather smaller contaminants for an extended period of time before it needs replacement.

To make sure that you remember to replace the filter regularly, a magnetic timer is included. This can be attached almost anywhere and will alert you to swap the filter whenever it has counted time down to the next interval.

With its class-leading performance and reliability, Blueair’s Classic 605 Air Purifier is our pick for the best air purifier for allergies.

What We Loved

  • Highest CADR ratings
  • Good for larger rooms
  • Robust build and capacity
  • Extended warranty

What We Didn’t Like

  • Heavy body
  • Expensive

PIONAIR 750 Smart Pointe

air purifier for allergiesThis is a powerful electrostatic model that generates huge amounts of negative ions, which assist in quickly removing airborne allergens from rooms of up to 1,500 square feet in area. Ionization efficiently neutralizes allergens, molds, mites, and VOCs in place of just capturing contaminants, unlike filter models. The other method it incorporates is a treatment that is designed to kill bacteria using photocatalytic oxidation.

A UV lamp shines light over catalysts and causes reactions that split water molecules, resulting in large concentrations hydroxyl radicals and negative ions. These airborne radicals attach to microbes and progressively break down their molecular structures as they turn into mostly harmless organic matter.

There is no filter to change and neither is there a collection plate to clean, you just switch the unit on and enjoy the quiet. Basic controls and functions serve its minimalist design, homeowners only have to switch it on and leave it running. The technology provides a convenient, environment-friendly way of conditioning indoor air.

Lamps will normally need replacement after continuous usage of just over a year, although intermittent usage involving timers or scheduled periods can extend life appreciably. Bulbs will still work after a year of use, but their efficiency does diminish from that point.

PIONAIR’s 750 Smart Pointe is a capable ionizer. It is more than good enough for the easy and effective neutralization of most allergens and smelly vapors in larger rooms.

What We Loved

  • Nightlight function
  • Uses HEPA filter

What We Didn’t Like

  • Pricey
  • Expensive replacement bulbs

Koios Desktop Air Purifier

2018 air purifier for allergies

This relatively compact air purifier has dual filtering stages. Both True-HEPA and activated-carbon elements eliminate 99.97% of all dust, fumes, pollens, molds, dander, and odors.

The low 16 CADR rating of the filtering operation is offset by the ionizing treatment. Both processes work together to eliminate most bacteria while purifying the air in smaller rooms of up to 400 cubic feet in volume.

best air purifier 2018The fan is readily controlled via a simple switch atop the housing. Its 3 settings of low, medium and high will let you set it to handle various conditions. There is also an auto mode that adjusts speeds based on air quality readings.

The compact design features a convenient, space-saving shape that should fit in most spaces while consuming little power of just 5W or less. The ambient blue glow of the circular casing can look rather cool at night as well, although it would be nice if it could be turned off.

It is true that larger air purifiers tend to be more economical in the long run, but those can be much pricier. This compact model performs well enough for smaller spaces, such as tiny bathrooms.

What We Loved

  • Dual-stage filtration
  • Portable and compact

What We Didn’t Like

  • Less filtering capacity
  • LED cannot be turned off

Alen Paralda HEPA Dual Airflow Tower

best air purifier for allergies

This is a stylish air purifier that eliminates a variety of flying contaminants including dust, pollens, molds, dander, and most microbes. The design’s combination of True-HEPA filters and electrostatic treatment handles most airborne allergens, while the integrated UV lamp kills off many bacteria.

The 150 CADR rating means that the unit can accommodate medium-sized rooms of up to 500 square feet in area. However, there is no pre-filter to capture the larger fragments that can shorten the operating life of the main filters. For optimal performance, the filter will likely need to be replaced every six months.

Touch switches on the nice digital display control the 4-speed fan, but are otherwise limited. Although a programmable 24-hour timer is available, there is no further automation such as air quality sensors or auto settings.

You can transfer the air purifier to different rooms, depending on need. Unlike the majority of models, it will lose its settings every time power is lost and will therefore require reprogramming after power disruptions.

Alen’s Paralda is an average performer but has a great lifetime warranty. However, this only applies to first-time owners who regularly order filter packages from the manufacturer.

What We Loved

  • Both filtration and ionization are effective
  • Sturdy build for a portable unit
  • Lifetime warranty

What We Didn’t Like

  • Pre- filtration is absent
  • Unit settings are lost once switched off

Levoit LV-PUR131

best air purifier for allergies in 2018

This model features multi-stage filtering, activated-carbon and other pre-filters assist in eliminating smoking, cooking, and other chemical smells that can pervade your home. The decent 135 CADR rating shows that the unit can handle rooms of up to 200 square feet in area.

The easy-to-use controls include an auto sensor mode that adjusts speeds automatically. Color-coded LEDs display interior air quality while the system matches speed levels to current conditions. The easy-to-use control buttons do allow rapid adjustments to air-exchange rates.

Fan speeds can be manually set to low, medium, or high, while the sleep mode enables the quietest possible operation. The integrated timer can be programmed to run the cleaning operation up to a dozen or so hours after.

Most users will probably gain optimal results by leaving settings at the highest speed that they can barely notice, for it is one of the quietest designs in its class. A railing atop the body lets you lift and transfer the unit around.

Comparatively expensive replacement filters boost its long-running costs a little, but it does have a 2-year warranty. Levoit’s LV-PUR131 impressed us due to its mostly silent and yet powerful performance, it is our budget pick for a True-HEPA air purifier for allergy sufferers.

What We Loved

  • Three filtration stages
  • Decent CADR rating
  • 2-year warranty

What We Didn’t Like

  • Speed cannot be set whenever sleep or auto modes are enabled

Alen T500 Designer (allergies and dust)

2018 best air purifier for allergies

According to specifications, this relatively compact model will capture most airborne particles found indoors, such as microbes and smelly vapors and chemicals. With its 159 CADR rating, it readily handles large concentrations of airborne pollens, dust, or molds in rooms of up to 250 square feet in area.

Four different filter types are available to help make sure that things will always smell clean and inviting. A filter-life indicator assists in reminding users about filter replacement, which in most cases should be done in 12-month intervals. The unit is light enough to be moved between different rooms.

If you are sensitive to noise, the design may not be appropriate. At its fastest fan speeds, it generates more than the usual breezy sound, so it is best to select slower speeds for quieter running. Unfortunately, it is also less efficient than most True-HEPA designs, as filter captures at most only 95% of all airborne contaminants.

Alen’s T500 can still serve in the majority of regular and smaller rooms. The compact and lightweight design will also suit allergy sufferers who need to bring a unit along on their travels.

What We Loved

  • Small and lightweight
  • Intuitive, easy-to-use controls

What We Didn’t Like

  • Less efficient HEPA-type media
  • Noisy at faster speeds

LG AS401VGA1

the best air purifier for allergies

This multi-stage model has a true-HEPA filter that captures 99% of all dust, pollens, dander and molds. It is easy to setup and to run, once switched on it defaults to convenient automatic settings.

The 205 CADR rating means that this unit should work fine in rooms of up to 250 square feet in area. A number is continually displayed that indicates current room air quality, which is both cool and informative. But while the drum-like design has a certain simplicity, it is not exactly styled for rooms with conventional themes.

It is also somewhat massive, given its rated air-cleaning capacity. The volume of the housing does enable it to operate more quietly than most. Turbo mode is not much noisier than most air conditioners, while in auto mode it will be fairly quiet.

Low-noise operation is therefore the big advantage of this design. Operation is all but inaudible at a distance of several feet, with a smooth white noise is generated at higher speeds. This actually helps to mask external sounds leaking into the room.

Of the three filters, the main HEPA element will need constant replacement. The other two pre-filters can be cleaned out with a vacuum and rinsed when needed, which is great for economical operation.

With LG’s AS401VGA1, it is easy enough to have your room air refreshed at a sensible cost.

What We Loved

  • Silent operation
  • Good CADR rating
  • LED display indicates the current air quality

What We Didn’t Like

  • Covers relatively small areas given its size

Types of Room Air Purifiers

The majority of room units use mechanical filtration that rely on True-HEPA filters to capture the smallest contaminants. Many also use electronic treatment methods to neutralize other organic allergens such as microbes.

Most models cannot eliminate all viruses or gaseous particles, such as radon. Even medical-grade HEPA units are only effective at filtering certain sub-micron particle sizes.


True HEPA Filtration

Basic HEPA filtration is inexpensive to apply. True-HEPA filters are capable of eliminating almost all dust, pollen, mold, dander, and other microscopic allergens. They are certified to remove at least 99.97% of all such particles that are 0.3 microns or so in size.

With True-HEPA designs, as air is pulled in by fans via sealed channels, pollutants are increasingly slowed down and captured by the filtration media. The cleaner air that ensues is then dispersed back into the room. The technology provides the best filtering efficiency while not generating much if any ozone, unlike electrostatic air purifiers.

These machines are not so good against bigger and heavier contaminants, including bigger mite droppings and hairs stirred by vacuuming. Some integrate one or more pre-filters before the main elements to handle chemical vapors and odors, such as activated-carbon and fiber cartridges.

HEPA fan operation can be noisy at high settings, although homeowners have been known to like the white noise that is generated. Not every mechanical filtration design actually uses True-HEPA filters, though. You should therefore check to see if certified media is actually installed.


Electrostatic Treatment

A number of air purifiers use electrostatic treatment in place or in addition to mechanical filtration. Ionizers collect and reverse the electrical polarities of airborne contaminants, which are then dispersed afterwards. As these are drawn to floors, walls, furnishings, and clothing, they are naturally and efficiently removed from the affected room air.

You will still have to wipe down and vacuum affected rooms so as to displace as many allergens as possible, to ensure that most will not return. Ionizing elements do generate some amount of irritating ozone as a byproduct, even if at a level that is known to be safe.


Fighting Airborne Allergens

Airborne allergensSpending most days with little relief from your allergies diminishes your wellbeing and mental disposition over time. You can eliminate most of the problem at its source with air purifiers, which offer the following benefits:

Relieves allergy symptoms. Continually filtering large volumes of air in enclosed spaces eliminates the allergens and odors that ruin your daily life.

Opens up your breathing. The absence of allergens leads to less congestion in your nasal passages, letting you breathe better.

Uplifts your attitude. A clean and refreshing environment relieves you of allergy and sinus stress while enhancing your sense of wellbeing, allowing you to relax and focus your mind wonderfully.

Balances your sleeping habits. With wholesome relief come bedtime, you can sleep better and with confidence.


Features of Good Air Purifiers

Design and reliability. Careful design and construction as well as careful shipping and handling can influence performance and quality. Filters that meet the official HEPA standards are certified as ‘True-HEPA’ or ‘Medical-grade’ media, not ‘HEPA-type’. Certain models have timers that signal whenever filters need replacing, in keeping with recommended schedules.

Clean Air Delivery Rate (CADR) typically rates capacity of an air purifier to eliminate dust, fumes, and allergens. Designs that feature higher CADR ratings are generally more efficient.

Air Changes per Hour (ACH) indicates the minimum count of air exchanges produced in a given volume every minute. For effective filtration, you should shortlist models with ACH ratings of at least 5 or 6.

Filter volume. True-HEPA filters typically last from six months to five years in normal use. Inexpensive air purifiers use filters with smaller surfaces that will require more frequent replacement as a result, whereas those of premium brands are usually meant to be replaced every 3-5 years.

True-HEPA filters excel at capturing sub-micron particles but are not economical at trapping coarser specks. This is why pre-filters are typically used to catch dust, hairs and pollens.

Multi-stage filtration. Activated-carbon pre-filters that neutralize many gas, chemical, and other odorous vapors are often installed as well. Their other key benefit is to trap the largest particles before they start clogging the main filter, thus extending the operating life of the pricier HEPA and VOC elements.

Pre-filtering involves more maintenance, though. Most will need to be periodically cleaned or replaced and the costs of doing so can be high for certain models.

Electrostatic treatment . The one down side of this process is that you will still need to wipe off or vacuum the surroundings so as to eliminate every fallen contaminant. Certain designs use convenient ionizing precipitators to collect the charged particles on polarized metal plates.

Ultraviolet treatment. The elimination of microbes and other organic pollutants via UV requires long exposure. However, airborne particulates generally pass through too rapidly for proper treatment. For this reason, UV stages are not that critical to overall effectiveness.

Noise. Higher speeds bring about higher noise levels. You can avoid this by using air purifiers that feature adjustable fan speeds for controlling air flow.

Cost. Pre-filters that only need to be cleaned are usually preferable to elements that require periodic replacement. High-end brands generally feature longer-lasting pre-filter elements.


The Best Air Purifiers

You can use an air purifier at your office to give you relief at work and another unit at home to refresh your evening. Any of these models will do, but two impressed us with their daily qualities.

Blueair’s 605 performs HEPA-level air filtration without the attendant noises and the hassles of cleaning ionizers. It may not be as economical as its rivals in neutralizing undesirable odors, chemicals, and VOCs, but it is just superb at eliminating airborne allergens. The high performance, simple and easy-to-use design, quiet operation, and robust construction makes it our pick as the best air purifier for allergies in 2018.

Levoit’s LV-PUR131 offers relatively powerful and silent performance that will likely please most homeowners, despite its relatively costly filter replacement schedule. It remains an affordable choice for use in smaller rooms.