5 Best HEPA Air Purifiers for Cleaning Air Indoors

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Air purifiers with HEPA filters are one of the best ways to clean up your air in your home. Today, the problem of indoor air pollution is a big one. Just about every households suffers from poor indoor air quality, and that may be due to various factors.

One of the biggest problems with indoor air is the dust. There might be a lot of dust mites collecting over time, and there are also other particles that can cause indoor air pollution.

These particles can come into your home from the outside, or can be the result of heating solutions. The most common harmful particles of indoor air that can cause respiratory problems include:

  • Dust mites,
  • Pollen,
  • Particles from heating,
  • Bacteria and viruses,
  • Other particles.

Many air purifiers are very effective for cleaning the indoor air, and they do that with various air filters. One of the best types of filters are HEPA filters, whether they are True HEPA filters, activated carbon filters, and other filters.

And with the wealth of choices out there, it may be hard for you to pick the right air purifier. You have to choose between the quality of the filter, price, size, and other parameters that impact the choice.

Luckily, we have reviewed the best air purifiers for you. To make the choice easier, we’ll present you with the best HEPA air purifiers with their pros and cons. Let’s get started.

Best HEPA Air Purifiers

Here are the 5 best HEPA air purifiers for you to consider if you’re choosing one. These will massively improve the indoor air quality.

We’ll include the pros and cons of each choice, and why you should consider buying one. Note that this isn’t an ordered list, but rather a general list of the best air purifiers with HEPA filters.

Let’s get started.

1. IQAir Medical-Grade Air Purifier (HyperHEPA Filter)

First up, we have the IQAir Medical-grade air purifier with a hyper HEPA filter. This filter is far more effective than most HEPA filters; you can achieve 99.5% efficiency with it, as it will remove almost all particles of 0.003 microns.

This means that it’ll remove almost all the particles from the air, including pollen, mold spores, dust, bacteria, dust mite, tobacco smoke, soot, pet dander, and even viruses.

It’s one of the best filters out there, as it’s a medical grade filter. If you’re looking for efficiency, you should be prepared to spend a bit more on this filter. But you will only get high quality, which is almost guaranteed here.

Yes, it’s slightly larger and clunkier than other purifiers on this list, but you won’t regret it, especially if you’re after performance. Additionally, the purifier will cover large rooms – of up to 104.5 square meters (1,125 sq. ft.).

If you have allergies, asthma, breathing problems, or if you’re suffering from poor indoor air quality, this one is a no-brainer.

It’s the ultimate choice; if you’re cautious about the prices, you shouldn’t be. While it is slightly more expensive than some other filters, you’re only getting a top level of quality here.

Additionally, it will remove odors from smoking, cooking, or from pets. There are also options for setting speeds, timer, and other options that let you control the filter.


  • Hyper HEPA filter gets rid of 99.5% of all particles of 0.003 microns.
  • The purifier covers 104.5 square meters (1,125 square feet) of space.
  • A great amount of choices when it comes to purifier settings and speeds.
  • Premium performance.


  • The purifier is quite large.
  • It can be expensive for some.


2. BlueAir Classic 605 Air Purifier

The next choice on this list is not too far away from the IQAir purifier in terms of quality. To start with, we have to mention that you’re getting multiple size choices with this purifier.

The smallest size is the 203, which covers 280 square feet. The largest option is 605, which will cover 775 square feet of space. There are five options altogether.

The filter features the HEPASilent filter which works like a True HEPA filter, but it’s much more silent.

It removes 99.97% of all airborne pollutants, including dust mites, pollen, mold, pet dander, smoke, and viruses. But the best feature about the purifier is the system design, which makes sure that it operates very silently.

First of all, it has 3 fan speeds that enable you to control the power and the noise levels of the purifier. Additionally, there is such a design that enables the maximum silence.

The CADR rating of the purifier is 500, which is quite a lot for such a purifier.

For all those who have Amazon Alexa, they can easily control it remotely with the Alexa system. The way it works is that the purifier incorporates the same technology so that it can understand the commands.

Additionally, you can easily control the purifier through the Blueair Friend app, where you can set the speeds, the modes of operation, and much more.

The build quality is also commendable. It’s made from a steel body, making sure that it’s resistant to the test of time.


  • HEPASilent filter makes sure that the it removes 99.97% of airborne pollutants.
  • The operation is incredibly silent because of the filter and the build.
  • The remote control is easy with Alexa and the Blueair Friend app.
  • Various settings allow you to control the operation completely.


  • Some users have reported that it emits unpleasant odors, although we didn’t detect this.


3. Alen BreatheSmart Classic Large Room Air Purifier

If you’re looking for a more moderately-sized option that will provide an incredible level of purification, this one is the way to go. It features the True HEPA filter that will remove 99.97% of airborne particles of 0.3 microns.

Possibly the best feature of this purifier is the fact that it will clean the air of even the largest rooms, even if it’s not the largest purifier.

The coverage area of this filter is 1100 square feet, which is a lot. If you have foul odors in your home that you want to remove, then this filter will also provide that.

It removes dust, mold, odors, fumes, smoke, and other pollutants and odors in your home.

The people at Alen are very friendly and helpful; if you need customer support, you’ll have easy access to it. Just contact the providers, and they will respond to you in no time.

You get 4 fan speed options, letting you control the strength of the filter, as well as the noise levels that it emits. The noise levels of this filter are also quite low.

You will need to clean the prefilter now and then to ensure that the purifier works as efficiently as possible. Similarly, the TrueHEPA filter will need replacing every few months, although that can last to even a couple of years.

All in all, a very quality filter that will remove most odors and airborne pollutants. It will work silently, and it affects large areas when you need it to. It’s a great choice for everyone.


  • True HEPA filter removes 99.97% of airborne pollutants.
  • The coverage area is large – up to 1100 square feet.
  • The filter works silently, and has 4 fan speeds.
  • Impeccable customer support.


  • Can be expensive.


4. Sharp FXJ80UW IoT Wi-Fi Enabled Air Purifier

If you want a truly clean air with the help of modern technology, the you should consider this Sharp air purifier. Sharp is already known as one of the more reputable providers of air purifiers, but they take it to another levels with this one.

There are 8 sizes to choose from, and they will cover everything from small rooms to rooms of up to 502 square feet. That’s not much compared to some other purifiers on this list, but still more than enough for a device of its size.

It has a True HEPA filter to clean the air, as well as the ionizer. The HEPA filter will get rid of almost all pollutants of 0.3 microns or larger.

At the same time, the ionizer will produce minimal ozone, making sure you’ll stay safe if you’re concerned about that aspect of ionizers.

First, the air will pass through the pre-filter, where the largest particles will get removed from the air. The filter is washable, so you’ll have to clean it every few weeks.

Then, to get rid of the odors, the air passes through the activated carbon filter. Lastly, to get rid of most pollutants, the True HEPA filter will make sure that the air comes out clean and fresh.

It’s also very easy to control the filter, even remotely. You can manage the filter when you’re not home with the Sharp Air app. The LibraryQuiet feature makes sure that the purifier operates silently and efficiently at the same time.

It’s a feature-packed device that you shouldn’t miss out on if you’re looking for a quality purifier.


  • 3-stage filtration with a True HEPA filter.
  • Washable pre-filter.
  • Easy control with the Sharp Air app.


  • Covers 502 square feet only.


5. Oransi Max HEPA Air Purifier

Last but not least, we have the Oransi Max HEPA air purifier. This purifier has three filters: the pre-filter, HEPA filter, and an activated carbon filter. The area of effect of the device is 600 square feet.

It has a HEPA filter that has a slightly lower level of efficiency compared to, let’s say, True HEPA filters. But the efficiency is still at a very high level, and it’s around 98%.

It removes dust, mold, pollen, pet dander, and other allergens. In addition, it will clear most odors from the air, making sure you’re left with clean, fresh-smelling air. In addition, the purifier doesn’t work too loudly; the output is at most 54DB, which is slightly less than the competitors.

The device is highly practical; it’s not too big, but it covers a good amount of ground, so it’s perfect for bedrooms, garages, or even basements.

There are 4 fan speeds to choose from, and these will highly impact the performance and the noise levels. The lowest fan speed is ideal at night, as the noise levels are at only 34DB.

While the purifier doesn’t have a remote control or an app that lets you control it, there’s still a good array of options that let you optimize the way the device works.

Filters need replacing every few years or months, especially if the device is on for most of the day. In addition, you get a 10-year warranty to go with the package, making it a great choice for everyone.


  • Three-stage filtration.
  • 10-year warranty.
  • Silent operation.
  • 600 square feet of coverage.


  • No remote control or app


Benefits of Using a HEPA Air Purifier

A good HEPA air purifier will be capable of doing several tasks, and much more than just purify the air. Here are the best benefits of a purifier.

Removes Triggers for Asthma Attacks

HEPA Air purifiers are an absolutely must-have device for anyone who suffers from asthma. This breathing condition can be triggered by various air pollutants; sometimes, a higher dosage of dust or dirt in the air is enough to trigger an asthma attack. In other cases, it’s various smoke odors and other odors, as well as other products that can trigger an asthma attack.

A HEPA filter will get rid of most of the particles that can cause asthma attacks, so an air purifier is an essential device.

It Disables Allergies

People suffering from allergies should also consider having a HEPA air purifier. This will make sure they don’t sustain various problems that allergens can cause, such as pet dander, mold, or pollen in the air.

They Remove Foul Odors

One of the biggest reasons for having such an air purifier is that it removes odors from the air. It could be because you are smoking or you have a smoker at home, or it could be because of pets.

Sometimes, the odors come from cooking, or because of other things in your home. And because the purifier traps smoke, it prevents various diseases that can be caused by smoke or other similar types of pollution.

It Traps Viruses and Bacteria

The great thing about purifiers is that some of them have the capability to remove viruses and bacteria from the air. That’s especially true of medical-grade HEPA filters.

This way, you’ll be less prone to various diseases and infections, which is especially important these days.

Improves Overall Quality of Air

If you’re looking for something to improve the air quality in your home, you should invest in a good air purifier. Whether you’re looking to remove odors, or just to remove the pollutants or allergens, you should consider investing in a good purifier.

How to Choose a HEPA Air Purifier?

Choosing the right air purifier can be hard, especially considering the amount of options we have nowadays. There are many quality choices out there, but you need to know what exactly you need from an air purifier, and what are your limitations.

Here, we’ll take a look at how to choose the air purifier, based on some parameters that will define your choice.

Area of Effectiveness

Are you looking for an air purifier that will cover just your bedroom or a smaller room, or do you want one that will cover your entire household, or a larger room? That’s what you need to ask yourself when choosing.

There are many smaller choices that will cover smaller rooms such as bedrooms, but bring a lot of portability to the table. On the other hand, if you’re looking for something more powerful, there’s plenty of choices for that as well.

The Strength of the Filter

In other words, how much of the pollutants get cleared by the HEPA filter itself, and the other filters in the purifier. Some devices have a True HEPA filter that is more effective than some other HEPA filters, or HEPA-like filters.

If you’re looking for the ultimate performance, your best bet is to buy a medical-grade purifier. That’s the best choices for everyone who wants to remove almost all the pollutants of 0.003 microns or larger.

Your Budget

Of course, you’ll need to consider your budget. There are some purifiers that will be more budget-friendly, but you will have to compromise on some of the functionalities.

Usually, it’s the strength of the filter or the area of effectiveness. Nevertheless, even the budget options are often very good and bring a lot of portability and are still great for smaller rooms.


Do you want a purifier that will stay in one spot alone, or do you want to move it around your home and use it in various rooms? That’s an important question to ask yourself, and it will seriously impact the choice you make.

Versatility and Other Features

Other filters also come into question here; do you want an activated carbon filter as well, or an ionizer? Are you looking for something that can be controlled remotely? That’s all additional features that will bring the experience to another level.

Can HEPA Air Purifier Help with Asthma?

One of the primary benefits of using an air purifier is that it helps those who suffer from asthma. As it is triggered by various pollutants that are in the air, an air purifier will actively remove those pollutants from the air and prevent asthma attacks from happening in the first place.

Dust or dirt, as well as mold or pet dander can cause asthma attacks; in other cases, it can be odors or other particles in the air. Luckily, you can solve those issues easily with a good air purifier. So if you’re an asthmatic, you should definitely consider an air purifier.

An additional help would be an air humidifier, but that’s out of the scope of this article.

How Often Should You Run the HEPA Air Purifier?

The air purifier should be run for 6-8 hours daily at most, and some users want to have it on during the night.

Some purifiers are better suited for that, as they will operate more silently than some other purifiers do. Nevertheless, you can also extend that time of operation, although beware that it will cost you on the electricity costs.

Usually, it will take a couple of hours to purify the air completely; what’s more than that will be a bonus, and will prevent further buildup of pollutants.

The more you use it, the better the air will be. If there’s odors in your home, you might need to keep it on for significantly longer, especially if the odors are strong.

Can You Sleep with a HEPA Air Purifier On?

Yes, you can sleep with the purifier on, although you will need to be conscious of this when picking the device for you.

Some purifiers will work more silently than others, enabling you to use them at night more easily. Additionally, an air purifier should be equipped with the various fan speed settings, which would let you control the strength and the noise levels that the purifier emits.

Sleeping with a purifier turned on is especially helpful for those who suffer from asthmatic attacks at night or allergic attacks. You can solve this issue by getting an air purifier that won’t cause a lot of noise, and will remove those pollutants effectively at the same time.


So there you have it, those are the best HEPA air purifiers that you can choose from. Choose wisely, and hopefully, this article will be of help to you.

With the wealth of options out there nowadays, it might be hard to pick the right product for your needs. You’ll need to consider the things we talked about earlier, such as the size, price, and the capabilities of the purifier before choosing.

1 comment

  1. Nazario Armilla

    I need to treat 2000′ what do you recommend?

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