Best Air Purifiers to Fight Dust Allergens in Your Home

The dimensions of the targeted room is the arguably most important factor we consider when buying the best air purifiers.

An air purifier with too small a capacity will bottleneck too soon and you won’t feel any change in your surroundings.

Another important parameter that influences the type of air purifier that must be bought is the frequency of filter replacements.

Filters that come at a high price may be too costly in the long run due to frequent HEPA replacements while high end models may require less frequent replacements, but at a higher initial cost.

Take a look at the 10 best HEPA Air Purifiers that can really help you fight off allergies:

Top Picks:

1. Sharp KC-860U

Price: $400
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A high-end air purifier to say the least, the KC-860U is a quiet purifier that can work in areas up to 350 sq ft. The product not only comes with a HEPA filter that lasts for 5 years but also with a air-humidifying option. The active carbon filter can be washed and even though the price tag may be to heavy, it will need little maintenance for 5 whole years.

2. AeroCure One

Price: $899
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This is one heck of a premium air purifier developed specially by a physician. Incorporating a medical grade HEPA filter and ultraviolet light, the purifier can easily kill of fungal pores, bacteria and viruses in rooms with area up to 800 square feet. Other highlights of the purifier are a stainless steel body and a 5 year warranty!

3. Alen BreatheSmart

Price: $599
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Another top-of-the-line air purifier, the BreatheSmart can cover an area up to 1100 square feet and has a long lasting HEPA filter. The front panel comes in a variety of different colors and thus the air purifier is much more than just an allergen killing machine. It will blend in nicely with your furniture and decorations; also you’ll get a limited lifetime warranty with this!

4. GermGuardian AC4100

Price: $59
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The AC4100 comes with a built-in HEPA as well as a charcoal filter that can keep away both allergens and pet odors out of the room. A UV light has also been fitted in the purifier for protection against viruses. You can tweak the operational speed of the purifier if you want.  The filter lasts for 6 – 8 months before it needs replacement.

5. Hamilton Beach TrueAir

Price: $47
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This is a decently priced air purifier designed for pet households. Featuring a permanent filter that can be cleaned by a vacuum, the purifier can cover an area of over 150 sq ft quite easily and will require no or little replacements during its lifetime.

6. Blueair 203 Slim

Price: $329
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This is a visually minimalist air purifier that can cover an area up to 250 sq ft with great ease. It pertains a silent operation along with a great HEPA filter that can go head to head against particles that are less than 0.1 microns.

7. Holmes Desktop Air Purifier

Price: $30
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This is a miniature air purifier that has a size small enough to sit on your desk. It can cover an area up to 109 sq ft. The price tag is light but at the same time there’s no compromise on quality as the HEPA filter can catch particles as tiny as 1.8 microns.

8. Fellowes AeraMax 290

Price: $252
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A great option at a very solid price, the purifier is well suited for medium sized rooms up to 600 sq ft. It is a asthma certified free product perfect for winter. The filter can lat up to one year while the product comes warrantied for 3 years.

Why Buy An Air Purifier?

Recent studies have shown that the quality of the air we breathe indoors leaves a lot to be desired. As a matter of fact, indoor air might hold more pollutants than outdoor air. This isn’t surprising since indoor air can’t escape easily and as a result particulates and pollutants tend to stay inside. A direct result of the quality of the indoor air is that we tend to develop various breathing problems such as wheezing or allergies. It can be an even greater danger to those who suffer from asthma. To combat all these problems what you need is an air purifier for dust and other pollutants.

Before you go to buy an air purifier for your home, there are certain terms you need to know so you can make an educated choice. The first of these terms is Clean Air Delivery Rate or CADR. The CADR score of a machine is determined by the Association of Home Appliance Manufacturers (AHAM). It indicates the amount of filtered air that an air purifier for dust releases into the room. Air purifiers have three separate CADR ratings – for dust, smoke and pollen. The higher the score, the more efficient the air purifier is at filtering out these pollutants. You should be aware that there are dust air purifiers that do not carry these ratings and hence, a comparison with other air purifiers becomes difficult. If you are considering buying such a machine, it is a good idea to consult our home air purifier review to find out which is the best air purifier for your home.

What Should You Look for in an Air Purifier?

There are plenty of factors to consider when you’re thinking of buying the best room air purifier. Take each of these into consideration before you make a decision.

CADR Rating

As mentioned earlier, the CADR rating tells you how much purified air is released into the room by an air purifier for dust and other pollutants. But it does more than that. The CADR rating tells you what the size of the room should be to ensure that the air purifier filters air efficiently. The AHAM has established that the room should be 1.55 times the CADR rating for smoke. Therefore, you do not want to get a small air purifier for a large room since this renders the air purifier useless. The best air purifier for dust, smoke and pollen should have a recommended room size that is larger than the size of the actual room you plan to use it in.

Number of Air Changes

Another factor you need to consider is the number of air changes that an air purifier for dust and other particulates performs in an hour. This basically means how often the air purifier filters the air in your room in an hour. If you suffer from breathing problems due to pollutants or have allergies or asthma, this can help you determine the best room air purifier for allergies.


The airflow measures the rate of moving air through the filters of an air purifier for dust. Although many companies relate this to the CADR rating, in actual fact, it is not related. However, it can help you determine whether the air purifier you’re considering is suited to your needs. It measures the amount of air passing through in terms of cubic feet per minute. Common sense dictates that the more air that gets filtered, the more pollutants are removed from it. As such, a higher airflow is definitely better.

HEPA filters

HEPA filters are industry-standard filters. They filter out 99.97 percent of 0.3 micrometer particles from the air in your room. Other filters don’t even come close. An air purifier with HEPA filters can reduce the amount of pollutants in the room drastically. Some air purifiers also come equipped with pre-filters that can capture the larger particulates, ensuring that the HEPA filters don’t get clogged too frequently and don’t have to be replaced too soon. These pre-filters are usually made of carbon. In addition, there are some air purifiers for dust, which also have specific filters to take care of substances such as pet dander.

In addition to these filters, some air purifiers use ionization to filter the air. However, this method is still under scrutiny since ionizers tend to release small amounts of ozone. Another method that some air purifiers use is UV light. There is some question about the efficiency of this because pollutants need to be exposed to the light for an extended period of time for it to sterilize the air – something that doesn’t happen in air purifier for dust because the air moves too fast through it.

Additional Features

In addition to the features mentioned above, you need to consider some additional factors in your search for the best air purifier for dust.


You need to look at the size of the air purifier that you’re buying, especially if you plan to move it from room to room. It should be portable and light. You need to ensure that the air purifier for dust is not blocked by a wall or a piece of furniture or the airflow will not be smooth. You also need to look at how much noise the air purifier makes if you plan to leave it on while you sleep. The settings can be changed so look for the lowest setting and check whether the noise is audible or disruptive to your sleep. Some air purifiers come with timers that you can set to turn them off automatically or even turn them back on at some future point in time.

Energy and Certifications

Whenever you buy a new appliance, the energy cost is something you probably consider; after all, no one wants to be stuck paying huge electric bills. Look for purifiers that have Energy Star certification since they are about 20 to 30 percent more efficient than required by federal standards. They are also more energy efficient than non-starred purifiers. You also need to make sure that the air purifier for dust you’re considering meets safety standards by checking for UL and CARB designations.

Help and Support

Look for an air purifier for dust that has a warranty for a year or more. This will give you peace of mind in case you need to get it fixed or replaced in case of an issue. These days, many companies have an online manual that you can use if you’ve lost the manual that comes with the appliance. They also have FAQ pages that you can consult before turning to customer support. Some of the best companies offer live chats with their customer care executives and others have a helpline number. Email support is offered by all.

With the high amount of pollutants in the air, both outside and inside, it becomes imperative that you prevent any future health problems. Investing in an air purifier can have a long-lasting and positive effect on your health.