Best Air Purifier for Large Rooms

Best Air Purifier for Large Rooms – When I was choosing an air purifier for my house, I felt overwhelmed by the number of models and types of air purifiers available. To be honest, I had no idea what suited my needs best and what type of device would do a solid job without destroying my budget.

After hours of research, I found these factors crucial in selecting the best air purifier for large rooms for your needs.

All  of the products  are quality devices that will help you get rid of indoor pollutants, but the one device that clearly stands above others is the IQAir HealthPro Plus, it is by far the best large room air purifier with the most advanced HyperHEPA filter that will eliminate an amazing 99.5% of pollutants larger 0.003 microns.


The filters are extra durable and need changing anywhere from 18 to 48 months. You will need to change filters on other devices at least 3-4 times in that timespan, so it’s important to consider maintenance costs.

1.Blueair Blue Pure

Blue Pure 211+ is the most popular air purifier model from Blueair. You will get almost 50 percent more air delivery rate from it compared to the Medify MA-40 at almost the same price. Despite having a low-dense particle filter, it works well just as close to High-Efficiency (HEPA) filter air purifiers.

In fact, the purifier is the #2 top-rated air purifier tested by Consumer Reports.

In this post, we review the Blueair Blue Pure 211+ Air Purifier by analyzing its specs, features, pros, and cons, including a comparison with Blue Pure 311 Auto Air Purifier.

2.LEVOIT Air Purifier

Compact air purifiers are simple to use and maintain. You can place it on the desk while working from home or next to your couch in the living room or next to the bed in the bedroom while sleeping. An air purifier should be placed where you spend the most time. Instead of buying multiple purifiers, only one purifier can do that.

Levoit Core 300 is a cylindrical-shaped air purifier with a 360-degree air intake and a complimentary 3-in-1 filter. Without emitting any ozone, this quiet air purifier with a Smoke CADR of 141 CFM can clean a 210 sq ft room five times an hour.

3.Coway AP-15

Coway AP-1512HH Mighty Air Purifier is compact by design, but is equipped with cutting edge features to keep your indoor air clean. Equipped with a HEPA efficiency rating of 99.97%, it uses a four-stage filtration system to effectively eliminate odors and pollutants. The mighty includes an air quality indicator through our particle sensing technology that will kick your air purifier into high gear when needed, and when pollution is not detected for 30 minutes, the fan will automatically stop to save energy.

The fan automatically adjusts the airflow when pollutants are detected in the air, providing peace of mind that indoor air quality is always being monitored. The intuitive Air Quality Indicator uses particle sensor technology to monitor the indoor air quality, and responds with a vivid color change to show the air condition.

4.Winix 5500-2

However, when I tested the Winix 5500-2 Air Purifier I was “blown away” by the performance, structural design, and overall intelligence of the machine.

This has been my favorite air purifier I have ever reviewed or owned in the past and I don’t think there will be another to replace it at the same price point. This machine really has all you could want in an air purifier. In this article, I’ll show you the results of the tests I ran, and how those results compare to the performance of other air purifiers we’ve tested here at HBS.

By the end, you’ll understand why I think that for medium to large room sizes, and to keep cost to a minimum, the Winix 5500-2 should be your first choice air purifier.

5.Genuine Winix

Winix 5500-2 is an air purifier with a True HEPA filter, and it is one of the hottest products Winix made. Winix has been on the market since 1973, long before HEPA was innovated, but as you see, they follow new technology and have created a True HEPA filter air purifier.

Besides the 5500-2, Winix has many different models on the market.

Winix 5500-2 features a simple design with black color that makes it extremely neutral in any environment. It is built for a medium-size room. However, it features lots of cool functions and advanced features that you can find out in this Winix 5500-2 review.

Best Air Purifier for Large Rooms – BUYER’S GUIDE

Type of Best Large Room Air Purifier

This should always be the starting point in your decision. What kind of pollutants are present in your home? Does your house suffer from odors? Are you worried about pollution from nearby industrial facilities? By identifying the type of pollutant that is affecting your air quality, you can decide what the type of air purifier technology you need.

Most large households will do just fine with a HEPA filter air purifier that will eliminate 99.97% particles up to 0.3 microns, but if your house is full of strange odors and gases, you might need an air purifier with an activated carbon filter.

True HEPA filter vs HEPA-like and HEPA-type Best Large Room Options

This is a trap you have to avoid. True HEPA filters meet the previously mentioned criteria and have lab certification. Manufacturers sometimes use sales language for their devices, promoting HEPA-like and HEPA-type filters that have no certification. Stay away from those devices.

Room Size and Capacity – Air Purifiers Coverage Area

The room size you are trying to purify plays a key role in choosing the best air purifiers for your needs. Most air purifiers are rated for room size in square feet (for example, 900 square feet.) Make sure to get the right device for your needs.

The capacity of air purifiers is measured in air changes an hour. The higher the number of air changes an hour, the bigger the capacity the device has. Bear in mind that this only takes into account the rate at which all the air makes its way through the air purifier and does not reflect the efficiency of purification.

Best Air Purifiers CADR Rating Review

Because air changes an hour do not take into account the efficiency of air filters in the air purifiers, a CADR rating is a compound rating that solves this issue. CADR (Clean Air Delivery Rate) takes into account the following:

  • Air recirculation rate of the air purifiers in CFM (cubic feet per minute)
  • The efficiency of the air purifier (as a percentage)

The CADR rating is a number given by multiplying a CFM capacity of the device and the efficiency of air filtration. For example, a 400 CFM device with a filtration system of 80% efficiency will give a 320 CADR rating. A 300 CADR rating is the bare minimum you should consider for your home. Anything above 350 CADR is a great unit.

Air Purifier Features

Many air purifiers have other handy features, so think about which features fit your needs. Do you need an air purifier that supports smart home features? Would you like to use your smartphone to adjust its operation? Are energy savings (3) a priority for you? How sensitive are you when it comes to noise?

Each device will have its pros and cons, so make sure that you purchase one that has the features that are important to you and fit the needs of your home.

Frequently Asked Questions

What Is The Best Large Room Air Purifier?

As we have seen, there are many valid choices with the best one being the Alen BreatheSmart 75i. It’s a perfectly balanced air purifier, specifically designed for large bedrooms.

It has powerful airflow, a high CADR rating, and the quietest operation (below 50 dB). You might find bigger air purifiers or even ones with better filtration systems, but the 75i model is the very embodiment of the specification you want in a large room air purifier.

Can An Air Purifier Be Too Big For A Room?

This is a common concern. An air purifier can be too big for a room. However, what really matters are the consequences of that: there are practically none.

Even if you big a very large air purifier that would be overkill for the room you put it in, it will do you no harm.

Of course, the unit price, replacement filters, and electricity bills will be higher, which is unpleasant but there are no documented real problems that would occur if you have an oversized air purifier in a room.

Will A Small Air Purifier Work In A Large Room?

Doubtfully. If you’ve miscalculated the size of an air purifier and bought one that’s too small, it will not properly increase the indoor air quality in that room.

Putting a small air purifier in a large room is better than nothing, obviously, but’s a job half done. The smaller air purifier will have a shorter lifespan, the replacement filters will have to be changed more frequently, and so on.

The smartest thing to do is to buy a large air purifier for a large room. Simple.


As I have become more aware of air pollution, I was surprised to learn that it’s not just an outdoor problem. Indoor air quality can also affect our health and quality of life. When I set out to try to solve this problem using an air purifier, I was unprepared for the overwhelming amount of air purifier products and solutions that make bold claims about purifying the air in the home using a HEPA filter.


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