Top 6 Best Air Purifiers Of 2018

Using an air purifier is a quick and easy way to make your living environment healthier.

Air purifiers work by removing things like dust, allergens and pollutants from the air around you. It’s easy to see how one of these “air cleaning machines” would benefit anyone suffering from, for example, asthma or allergies. But even if you don’t suffer from such an ailment, you’ll breathe easier with an air purifier in your home.

We’ve put together a list of six of the best air purifiers on the market today. Our choices span the spectrum of price ranges, from high-end to budget-friendly. So no matter how much you intend to spend, you’ll be able to find a great air purifier that meets all of your needs.

Reviews Of The 6 Top Rated Air Purifiers


1 Alen BreatheSmart Customizable Air Purifier
with HEPA-Pure Filter for Allergies and Dust

Our top pick is the Alen BreatheSmart Customizable Air Purifier. And this one is packed with features.

Most air purifiers are designed for spaces between 350 and 600 square feet in size. But the Alen BreatheSmart Customizable Air Purifier can work in rooms up to 1,100 square.

There’s also the SmartSensor feature, which can detect the air quality in a room, and adjust the amount of power it uses accordingly. Not only does this conserve energy, it will also prolong the life of the filter.

Reviews for the Alen BreatheSmart Customizable Air Purifier are overwhelmingly positive. Buyers love how well this unit reduces dust build up, eliminates unpleasant odors, and prevents mold. One reviewer said he put this unit in the middle of his 1300 square foot home, which greatly helped with his allergies.

And according to another buyer, not only does he cough and sneeze less than he used to, he also sleeps better at night thanks to this air purifier.

Some buyers wished the air quality indicator didn’t change quite so often because it can be distracting.  Fortunately, you can dim the indicator’s lights and eliminate the distraction.

If you want a high-end air purifier that can quickly clean the air in a large living space, the Alen BreatheSmart Customizable Air Purifier might be just what you’re looking for.


The Blueair 403 HepaSilent Air-Purification System works best in room’s up to 365 square feet. But while it doesn’t offer as much coverage as the Alen BreatheSmart Customizable Air Purifier, the HEPASilent technology can capture 99.97% of the dust and allergens in the air.

One of the Blueair’s best features is the magnetic filter timer, which will let you know when the filter needs changing, no guesswork necessary.

One thing often mentioned in the reviews is how quiet this unit is. One buyer loves how it effectively cleans the air without making an irritating racket.

Some buyers wished that unit was smaller. But it works so well that most don’t seem to mind the size. In fact, one reviewer was so happy with the first Blueair 403 HepaSilent Air-Purification System he bought that he has since bought two more.


The Honeywell True HEPA Allergen Remover doesn’t have as much coverage as the Alen BreatheSmart Customizable Air Purifier. But this Honeywell model works well in rooms up to 465 square feet.

Honeywell is the brand most allergists recommend to their patients. Why? Because it captures dust, pollen, cigarette smoke, pet dander, unpleasant odors, mold spores, and more, and without making too much noise.

Many reviewers said this air purifier effectively cleaned the air in rooms larger than 465 square feet. And one allergy sufferer, who runs an animal rescue out of her home, said the Honeywell True HEPA Allergen Remover not only reduced her allergy-related congestion and sneezing, it also reduced unpleasant pet odors.

Some reviewers mentioned how easily the filter cover comes off. But, considering how well the unit works, most consider it a minor inconvenience. And it can actually make cleaning the Honeywell True HEPA Allergen Remover even easier.


The Coway AP-1512HH Mighty Air Purifier with True HEPA and Eco Mode might be a compact machine, but it packs a lot of power.

Like the Alen BreatheSmart Customizable Air Purifier, this air purifier by Coway has sensor technology. When air quality is low, the Coway kicks into high gear to quickly and efficiently clean pollutants from the air. But when the machine senses that the air quality is good, it will switch to a lower setting to conserve energy.

Many reviewers loved the Coway’s compact size and appealing design. And not only is the machine relatively quiet, but many found the sound it does make pleasant and soothing. As one reviewer said, listening to this air purifier actually helps him sleep at night.

Some reviewers said the machine could be a bit loud when it kicks into its highest gear. But this only happens in drastic situations, like someone burning food. The purifier quickly deals with such problems, then returns to a lower, quieter setting.


The Winix Plasmawave air purifier is one of the most affordable of our top picks. It’s designed to work in room up to 350 square feet. And, like the Alen BreatheSmart Customizable Air Purifier, Winix PlasmaWave has a built-in air quality sensor that automatically adjusts the fan speed according to a room’s current air quality.

This unit not only removes pollutants from the air, it also eliminates unpleasant smells. And, best of all, it doesn’t produce any ozone or other harmful by-products.

Reviewers were impressed by how well this model works, especially given the price. One allergy sufferer, who has five dogs and five cats, considers this air purifier to be the best on the market. And another reviewer appreciates that this air purifier does such a great job without using a lot of energy.

Some buyers mentioned that you’ll need to clean the Winix PlasmaWave about once a week. But that’s because it does such a great job of collecting the dust from the air.


6 GermGuardian AC4825, 3-in-1 Air Cleaning System
with True HEPA, UV-C and Odor Reduction, 22-Inch

If you’re on a budget and looking for a great air purifier, check out the GermGuardian AC4825, 3-in-1 Air Cleaning System.

This air purifier captures 99.97% of the dust and allergens in the air, including pollen, mold spores, dust and pet dander. The charcoal filter helps reduce unpleasant odors. And UV-C light technology helps to eliminate airborne viruses, germs and bacteria.

The GermGuardian has gotten thousands of positive reviews. Allergy and asthma sufferers love it. And one reviewer said this air purifier can clean the unpleasant odors from a 450 square foot room in just 15 minutes.

According to some reviewers, the GermGuardian set to high is about as loud as a box fan. But, on lower settings, it’s fairly quiet.

Our bargain pick might not have as many features as the Alen BreatheSmart Customizable Air Purifier. But the price is hard to beat, especially for an air purifier that works this well.

What to Look for When Shopping for an Air Purifier

A lot of people worry about the air they breathe. With all of the cars on the road and factories spewing out toxins, air pollution is pretty bad. What a lot of people don’t realize is that indoor air pollution can be even worse than the pollution outside.

Indoors we have to deal with things like dust, pet dander, mold spores, pollen, volatile organic compounds, fumes from cleaning products and other household chemicals, the list goes on and on. Some of the things floating around in the air inside your home can trigger allergic reactions, and some things can actually make you very sick.


Because indoor air pollution is such a big problem, buying a good air purifier would be a wise investment and on this page we’re going to tell you what you should look for when shopping for an air purifier.


Different Types of Air Filters


HEPA Filters

Air purifiers use a lot of different filter types. One of the most popular is a HEPA filter. HEPA stands for High Efficiency Particulate Air and this type of filter is able to remove at least 99.97% of all particles down to a size of 0.3 microns. Being able to remove such a high percentage of such tiny particles, it’s easy to see why HEPA filters are popular.


Activated Carbon Filters

Another filter type is activated carbon. This filter type is not usually used alone, but in conjunction with other types of filters in an air purifier. Activated carbon does a great job of absorbing gases and odors. This filter type is great for people who smoke or people who have pets. This type of filter also does a great job of absorbing chemicals and fumes that may be in the air.


Ionizing Filters

This type of filter creates charged particles which are then emitted into the surrounding air. These ionized particles combine with dust and other impurities and then cling to the collection plates inside the device.


Antibacterial and Germicidal Filters

Some air purifiers use an ultraviolet lamp to kill bacteria, viruses and other microbes that can make you sick. These types of air purifiers are often used in environments that need to remain sterile, like hospitals for instance.

This type of filter is also great for controlling mold. Mold can make people very sick, especially people who are extra sensitive to it. If you’re worried that you might have mold in your house, you may want to invest in this type of filter. And of course you would also want to hire a company to do mold remediation as soon as possible.


Getting the Right Size Air Purifier

One of the most important things you need to do when shopping for an air purifier is make sure that you’re getting the right size unit for the room it will be used in. The Association of Home Appliance Manufacturers developed a system known as The Clean Air Delivery Rate or CADR to help make it easier for people to get the right size air purifier for the space it will be used in.

CADR is calculated by taking the square footage of your space and multiplying by 0.75. For example, if you have a 10 x 12 foot room, that room would be 120 square feet. 120 x 0.75 = 90 so you would need to get an air purifier with a CADR greater than 90. Of course when you’re shopping for air purifiers, there will also be information on the box (or on the sales page if you are shopping online) about what size room a particular unit is intended for.


Additional Features You Might Need

The different makes and models of air purifiers will have different features. Some of them you may find useful, some of them not so much. Some air purifiers will have a built-in timer so you can set the device to turn on or off automatically at certain times.

If you plan on moving the air purifier from one room to another, you may want to get a unit that has caster wheels to make moving it easier. Some air purifiers will also have things like multiple fan speeds, air quality sensors, and an alert to tell you when it’s time to change the filter.

You’ll have to spend some time researching the different air purifiers on the market, decide which features are most important to you, and which units are available at a price point that you’re comfortable with.


Operating Costs of Running an Air Purifier

Most air purifiers have an operating cost of approximately $150 to $200 per year. This includes the electricity that they consume and filter replacement. If you’re on a tight budget, in addition to looking at different air purifiers, check to see how much replacement filters will cost. If you can find a good air purifier with inexpensive replacement filters, this will save you a lot of money in the long run.

Another way to help reduce costs is to keep your air purifier clean. Dust your furniture and vacuum your carpets on a regular basis and this will help keep the filters clean. The dirtier the filters get, the less efficiently the air purifier will operate.


Noise Concerns

For some people, the amount of noise that an air purifier makes is insignificant. For other people, it can be a major concern. If you’re going to be using an air purifier in your bedroom at night, and you’re a light sleeper, you’ll want to make sure that you get one of the quietest options you can find. Manufacturers will generally tell you what the decibel level of an air purifier is and the lower the decibel level, the quieter the unit is.

Hopefully we’ve given you some information on this page that will help you find the right air purifier. If you have an idea about the type of filtration you want and some of the additional features that are important to you, it’s time to start doing some comparison shopping to find an air purifier that will suit your needs at a price you can afford.

Our Top Pick

Alen BreatheSmart Customizable Air Purifier

Alen BreatheSmart Customizable Air Purifier
Our Top Pick

Alen BreatheSmart Customizable Air Purifier

Alen BreatheSmart Customizable Air Purifier
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