6 Best Blueair Air Purifiers In 2021 (Spec-By-Spec Comparison)

“Indoor air pollutants are unwanted, sometimes harmful materials in the air. Indoor air pollution is among the top five environmental health risks.” (EPA’s Guide On Air Cleaners)

EPA is not the only agency that raises concerns about indoor air pollution. Natur Vards Verket, the Swedish version of EPA, is another. Sweden’s answer to indoor air pollution: Blueair air purifiers.

Blueair purifiers are one of the most popular air purifiers in the US as well. If you look at the most famous models – the Blue Pure 211 and its small cousin, the Blue Pure 411 – you can see the IKEAesque design.

All Blueair air purifiers are known for their ease of use, air purification proficiency, and reliability. By performance, they can even match the Coway and Dyson air purifiers. They are only outmatched by Alen BreatheSmart air purifiers; superior line of air cleaners for bedrooms.

Blueair does offer quite a large portfolio of air cleaners. The smallest Blue Pure 411 has a 161 sq ft recommended coverage area for the smallest rooms. On the other end of the spectra, the big Blueair Pro L with a 780 sq ft coverage area can be considered as a whole-house Blueair air purifier. 

We want to answer just one thing here:

Which is the best Blue Air purifier for your specific situation?

Some Blueair air purifiers are better for larger rooms, others for smaller rooms, and there are also some that are best for allergies.

To get a feel of Blueair purifiers, LM has pulled together 6 best-rated Blueair models. With a specs-by-specs comparison (check below), we can get a clear idea of which models of Blueair air purifiers are the best for what room size or/and nature of air pollutants.

Example: All Blueair units are HEPA air purifiers. That means they remove more than 99.97% of the smallest airborne air pollutants down to 0.3 microns in size.

Here are the 6 Best Blueair air purifiers LM recommends. You will find the comparison table of all models below, followed by specifications consideration, and reviews of all the top-rated Blueair air purifiers:

  1. Blueair 211 (Overall Best Mid-Sized Blueair Air Purifier)
  2. Blueair Classic 680i (Best Large Room Blueair Air Purifier)
  3. Blueair 411 (Best Small Room Blueair Air Purifier)
  4. Blueair Pro L (Best Whole-House Blueair Air Purifier)
  5. HealthProtect 7470i (Quietest Blueair HealthProtect Air Purifier For Allergies)
  6. Blueair Classic 605 (Strongest Blueair Air Purifier For Smoke, Especially Wildfire Smoke)

Comparison Of Best Blue Air Purifiers In 2021

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Blueair Purifier: #1 Blueair Blue Pure 211 #2 Blueair Classic 680i #3 Blueair Blue Pure 411 #4 Blueair Pro L #5 HealthProtect 7470i #6 Blueair Classic 605
Photo:
Room Size: 540 sq ft 698 sq ft 161 sq ft 780 sq ft 418 sq ft 698 sq ft
CADR Rating: 350 450 105 450 280 500
Filters: 3-Stage Filtration HEPASilent + DualProtection  3-Stage Filtration HEPASilent Filtration HEPASilent Ultra Filtration HEPASilent + Dual Protection
Power: 30-61 Watts (EnergyStar) 15-100 Watts (EnergyStar) 1.5-10 Watts (EnergyStar) 22-170 Watts (EnergyStar) 8-48 Watts (EnergyStar) 15-100 Watts (EnergyStar)
Noise Levels: 31-56 dB 32-62 dB 17-46 dB 32-55 dB 22-45 dB 33-62 dB
Blueair Price: $$$$ $$$$ $$$$ $$$$ $$$$ $$$$
Average Rating: 4.9 out of 5 stars 4.7 out of 5 stars 4.5 out of 5 stars 4.5 out of 5 stars 4.5 out of 5 stars 4.4 out of 5 stars
Availability: Check Price Check Price Check Price Check Price Check Price Check Price

Blueair Filtration System (Basic And Upgraded)

Filtration system is the very thing that:

  • Captures solid air pollutants (pre-filter for larger particles, hair, pet dander; and HEPA filters for very small dust particles, smoke, pollen, mold, dust mites, and so on).
  • Adsorbs gaseous air pollutants (activated carbon filter for undesired odors, such as wildfire smoke smell, cooking oil smell, or cigarette smell).

Blueair has two kinds of filtration systems; a cheaper one for budget-friendly units like the Pure Blue series (211, 411) and an advanced one for larger units (Blueair Classic 680i, Pro L, Classic 605).

Here is how classic budget-friendly HEPA air filters look like:

3 stages of filtration on blueair pure blue air purifiers like 211 and 411 model
3-stage filtration system budget-friendly Blueair Pure Blue 211 and 411 have.

These are quite standard Blueair filters. They capture all kinds of air contaminants; thereby increasing indoor air quality. The trio of prefilter-HEPA-carbon filter has a good CADR rating, and it’s quite cheap to replace.

You can find such a filtration system with other budget-friendly brands like Levoit, Okaysou, Hathaspace, and Honeywell

Advanced Blueair Filters

In 500+ sq ft air purifiers, the noise levels (caused by powerful airflow) can be higher than for smaller Blueair Pure Blue air purifiers.

That’s why Blueair went an extra mile when it comes to big air purifier filters. They have created the upgraded version of existing HEPA filters and activated carbon filters with higher capacity.

Here are the two proprietary innovative filter technologies developed and used exclusively by Blueair:

  • HEPASilent technology. The noise created by mechanical interaction in HEPA filters is reduced via a combination with electrostatic filtration.
  • DualProtection filters. Coconut carbon filters with increased speed of gas-phase adsorption (up to 4x faster gas removal).
advanced blueair filtration technology with silent hepa filter and dualprotection filters
Bigger air purifiers use the HEPASilent tech and DualProtection filters to reduce noise levels and increase odor-removing efficiency. 

A perfect example of the implementation of both these advanced filtration systems is the Blueair Classic 680i. Only top air purifier brands like Molekule, Dyson, and Airdog use such advanced filtration systems. 

An advanced version of the HEPASilent tech used in the new Blueair HealthProtect line (HealthProtect 7470i is an example) is the HEPASilent Ultra technology. This removes 99.97% of airborne particles like virus and bacteria, according to third-party tests of airborne viruses & bacteria (H1N1, Staphylococcus aureus, Escherichia coli) using GB/T18801-2015 standards.​

Coverage Area And CADR Rating

Blueair has small, medium, and large air purifiers. That’s similar to Coway and not at all like 360 sq ft Winix air purifiers.

Here is an idea of which Blueair units are for which room size:

  • Small room (100-200 sq ft): Blue Pure 411.
  • Medium-sized room (200-600 sq ft): Blue Pure 211, HealthProtect 7470i.
  • Large rooms, or 2-4 rooms (600-1,000 sq ft combined square footage): Classic 680i, Blueair Pro L, Classic 605.

What really matters is the CADR rating. For portable air purifiers like Blueair units, the CADR rating is the No. 1 metric to check. It tells you how well a job does an air purifier do at capturing small dust particles, pollen, and smoke.

Why are Blueair units high-performance HEPA air purifiers? Simple: Because they have a high CADR rating. 

Air purifiers have, on average, a CADR rating of 200. If you look at Blueair purifiers, you will see units with 350, 450, and even 500 CADR rating (Blueair Classic 605 has that 500 CADR rating, and it’s truly a powerhouse).

In CADR rating – the most important specification – Blueair units outperform almost all other air purifier brands, even Coway (Coway has a reputation for high-performance air purifiers).

All the CADR ratings and room coverages are AHAM verified. AHAM Verifide is an involuntary verification process with standardized testing that focuses primarily on measuring the CADR rating.

Power Consumption And Energy Star Rating 

Scandinavian countries like Sweden are very conscious of energy expenditure. This is plainly seen in Swedish Blueair air purifiers.

All the 6 top air purifiers come with an Energy Star rating. That means they are in the top 10% of the most energy-efficient air purifiers.

The smallest unit – the Blue Pure 211 – only needs 10W of power to run on the high-speed setting.

Larger units like the Classic 680i need up to 100W of power. If you leave it for all the time on the maximum fan speed setting, a Blueair Classic 680i will spend 2.4 kWh per day. Hence it takes less than half a dollar a day to power the big Blue Air purifier on maximum. 

In short, Blueair units do have high energy-efficiency, high-performance, and thorough HEPA-based filtration systems.

With all this in mind, let’s look at each of the 6 best Blueair units:


1. Blueair Blue Pure 211 Review (Overall Best Blueair Air Purifier)

Overall Best Mid-Sized Blueair Air Purifier
Coverage Area: 540 sq ft
CADR Rating: 350
Filters: 3-Stage Filtration
Power: 30-61 Watts (Energy Star)
Noise Levels: 31-56 dB
Dimensions: 13 x 13 x 20.4 inches
Weight: 13 lbs
Price: $$$$
Rating: 4.9 out of 5 stars

Blue Pure 211 is the most widely recognized Blueair air purifiers. It has that minimalistic IKEA-like design. Under the hood, you will find a budget-friendly 3-stage filtration system. 

One of the reasons why it’s so popular, apart from appealing Scandinavian design, is its 540 sq ft coverage area. Most rooms aren’t very small or very big; bedrooms, living rooms, kitchens, and kids’ rooms have the perfect square footage for Blue Pure 211 air purifiers.

The pre-filter captures all the large air pollutants such as hair and pet dander. The HEPA filter will remove more than 99.97% of the smallest air pollutants such as dust particles, smoke, pollen, and all other air contaminants that are as little as 0.3 microns. On top of that, the activated carbon filter adsorbs all the undesirable smells and other volatile organic compounds (VOCs).

Best of all: The Pure Blue 211 has a massive 350 CADR rating for mid-sized air purifiers. This ensures extremely high air purification efficiency.

On top of that, it has an Energy Star rating for energy-effectiveness, low noise levels, and it has been independently tested to achieve 5 air changes per hour in a 540 sq ft area.

All in all, Blueair 221+ is not only the best Blueair units, but it’s also one of the best performing air purifiers in general. Given the 350 CADR ratings, it’s very affordable as well.

Blueair Blue Pure 211

Pros
  • Extremely high 350 CADR rating for 540 sq ft coverage area air purifier
  • All-time favorite Blueair model, with 1000s of positive reviews
  • Minimalistic Scandinavian design
  • Low energy usage, very quiet, and with an affordable price tag
Cons
  • Doesn’t have the advanced filters like bigger Blueair purifiers
  • You might need 2-3 units for whole-house air purification

2. Blueair Classic 680i Review (Best Large Room Blueair Air Purifier)

Best Large Room Blueair Air Purifier
Coverage Area: 698 sq ft
CADR Rating: 450
Filters: HEPASilent + DualProtection 
Power: 15-100 Watts (Energy Star)
Noise Levels: 32-62 dB
Dimensions: 13 x 20 x 26 inches
Weight: 43.3 lbs
Price: $$$$
Rating: 4.7 out of 5 stars

Pure Blue 211 might be the best Blueair purifier because of the affordable price and Scandinavian design. However, for larger rooms, the bigger Blueair Classic 680i is much more appropriate. It also comes with all the advanced filtration technology Pure Blue 211 lacks.

In its filtration system, you can find both the HEPASilent filters and DualProtection coconut carbon filters. HEPASilent filter can reduce the noise levels created by higher maximum airflow of the Classic 680i unit.

DualProtection filter, on the other hand, can adsorb odors, fumes, paint, or cigarette smell up to 4 times quicker than standard activated carbon filters.

The use of advanced filters brings the CADR rating up to 450. Only a few non-industrial air cleaners can achieve a 400+ CADR rating; Classic 680i is one of them. 

Its recommended coverage area, based on 5 ACH calculations, is 698 sq ft. This makes the Classic 680i the best air purifier for large rooms. In fact, it’s big enough to serve as a whole-house air purifier, as stated in the list of best air purifiers here

Like all Blueair units, it’s energy-efficient (with an Energy Star rating). The price of its power is not electricity; it’s a little higher noise levels and the unit price. 

With the advanced Blueair patented filtration system, the Classic 680i is one of the most thorough large room air purifiers. But the new technology and excellent performance do come at about $900 cost.

Blueair Classic 680i

Pros
  • Excellent performance with almost industrial-level 450 CADR; best large room air purifier with 698 sq ft coverage
  • Has both HEPASilent and DualProtection filters to adsorb smells 4x faster while still running smoothly
  • It’s powerful enough that you’ll only need 1 (instead of 3-4 smaller 1-room units)
Cons
  • Despite the HEPASilent, the noise levels are higher than average
  • It has a high price point due to high performance and new technology

3. Blueair Blue Pure 411 Review (Best Small Room Blueair Air Purifier)

Best Small Room Blueair Air Purifier
Coverage Area: 161 sq ft
CADR Rating: 105
Filters: 3-Stage Filtration
Power: 1.5-10 Watts (Energy Star)
Noise Levels: 17-46 dB
Dimensions: 8 x 8 x 16.7 inches
Weight: 3.4 lbs
Price: $$$$
Rating: 4.5 out of 5 stars

Blue Pure 411 is the little nifty air purifier that you can put pretty much anywhere. It looks nice, but that’s only a bonus; under the hood, it has a simple yet effective 3-stage filtration system.

With the combination of pre-filter, HEPA filter, an activated carbon filter, the Blue Pure 411 is capable of removing large and small solid air pollutants, as well as gaseous odors and VOCs. 

Compared to other high CADR rating Blueair purifiers, the Blue Pure 411 is several times smaller. It has a 105 CADR rating, which is enough to effectively increase the indoor air quality in about 161 sq ft rooms. For bigger rooms, or for several rooms, you will probably need several of these small devices. 

It’s both the most low-consumption (max. wattage is 10W) and one of the quietest Blueair purifier (max. noise level is 46 dB).

2 things make the Blue Pure 411 the best-seller:

  1. Incredibly low price for a Blueair unit. Blueir air purifiers usually start at $300, but 411 has a special budget-friendly price point.
  2. You can get several of them in several different colors. Scandinavian design with the ability to choose your color goes quite a long way.

All in all, the Blueair 411 might just be the cutest air purifier in the world. It also costs less than $150, which is just an insane price for a Blueair unit.

Blueair Blue Pure 411

Pros
  • Smallest Blueair purifier with only 105 CADR rating, appropriate for smaller rooms
  • Quiet air purifier by Blueair and it runs on a maximum of only 10 Watts
  • Best-seller because people buy 3-4 of them due to extremely low pricing and the ability to choose nice colors
Cons
  • It’s not powerful enough for mid-sized or large rooms (you have to buy several of them for whole-house air pollution solution)
  • Has only basic 3-stage filtration system

4. Blueair Pro L Review (Best Whole-House Blueair Air Purifier)

Best Whole-House Blueair Air Purifier
Coverage Area: 780 sq ft
CADR Rating: 450
Filters: 3-Stage Filtration
Power: 30-61 Watts (Energy Star)
Noise Levels: 31-56 dB
Dimensions: 15 x 25 x 35 inches
Weight: 46 lbs
Price: $$$$
Rating: 4.5 out of 5 stars

Blue Pro L is the only Blueair purifier on this list that can be considered a whole-house air purifier. For one, it’s big, it’s powerful, and it has a 450 CADR rating.

With such performance specifications, it can change all rooms in a 780 sq ft room every 12 minutes. Achieving 5 ACH at that square footage, you know you can even put in a 1,000+ sq ft house, and it will still have a significant positive effect on indoor air quality.

To keep the small particle CADR efficiency high and noise level below 55 dB, the Swedish engineers needed to use the HEPASilent filtration. As we’ve discussed earlier, this is a Blueair patented technology; basically a silent high-capacity HEPA filter.

Despite having an Energy Star rating, however, the Blueair Pro L is so big it needs up to 170 Watts to run at the highest fan speed setting. If you leave it on for the whole day – and you should – the electricity cost of running it at the max. capacity can be about $1 per day. A great majority of air purifiers need less electricity to run; including the power-hungry Molekule Air with its PECO filter.

Nevertheless, if you really take the EPA’s warning to heart, and know that indoor air pollution is one of the most troubling unseen health risks, there is nothing better than a Blueair Pro L. Big, yes, but with capacity and performance (and price) to match.

Blueair Pro L

Pros
  • Powerful enough to be used as whole-house air purifiers (450 CADR rating)
  • Uses advanced HEPASilent filters that keep the noise levels below 55 dB
  • Makes quick jumps in indoor air quality quickly
Cons
  • While running at maximum, it needs 170 Watts of electricity
  • Higher price tag for high performance unit

5. Blueair HealthProtect 7470i Review (Best Blueair HealthProtect Air Purifier For Allergies)

Best Blueair HealthProtect Air Purifier For Allergies
Coverage Area: 418 sq ft
CADR Rating: 280
Filters: HEPASilent Ultra Filtration
Power: 8-48 Watts (Energy Star)
Noise Levels: 22-45 dB
Dimensions: 11.8 x 11.8 x 27.2 inches
Weight: 27.6 lbs
Price: $$$$
Rating: 4.5 out of 5 stars

HealthProtect is the new line of air purifiers by Blueair. It’s all about protecting health via improving indoor air quality. Certain air pollutants can be a factor in causing allergic reactions; pollen, for example, is a known airborne allergen.

Blueair HealthProtect 7470i is the latest in this line and the best. It has a decent 280 CADR rating (decent for Blueair, 280 CADR is actually quite an achievement), and it should be used in about 418 sq ft area.

The special thing all HealthProtect units have, including the 7470i model, is the HEPASilent Ultra filter. This is an ultra HEPA filter designed especially to capture potential airborne allergens that would otherwise accumulate in our respiratory pathways or on the skin.

People love how calming it is. Given the noise levels, it’s not difficult to see why. HealthProtect 7470i is the quietest Blueair air purifier; it focuses against allergies, and it has quite an appealing tower design.

All in all, Blueair HealthProtect 7470i is starting to gain a best-seller badge. In the times we’re in, it’s clear to see why.

Blueair HealthProtect 7470i

Pros
  • Focused on removing allergens from indoor air
  • Quietest Blueair purifier with up to only 45 dB noise levels
  • In the current climate, it’s starting to become more and more popular
Cons
  • Has a high price tag given the 280 CADR rating
  • It’s not entirely understood if and how it would destroy airborne viruses

6. Blueair Classic 605 Review (Strongest Blueair Air Purifier For Smoke)

Most Powerful Blueair Air Purifier With 500 CADR Rating
Coverage Area: 698 sq ft
CADR Rating: 500
Filters: HEPASilent + Dual Protection
Power: 15-100 Watts (Energy Star)
Noise Levels: 33-62 dB
Dimensions: 13 x 20 x 26 inches
Weight: 31 lbs
Price: $$$$
Rating: 4.4 out of 5 stars

Blueair Classic 605 is the true powerhouse. If your hobby is checking the air purifier’s specification sheets, you might have come across 400 CADR rating units. But no other company besides Blueair offers a 500 CADR rating portable air purifier.

Classic 605 not for normal household indoor air pollution levels, however. This unit is meant to, and best performs at low air quality levels. Example: Smoking cigarettes or other tobacco products in the house.

In the summer of 2020, for example, it was especially popular due to wildfires in California. Wildfires do create an exponential decrease in the quality of both outdoor and indoor air. Blueair Classic 605 is the perfect machine to filter out all those smoke particles and fumes.

The unfortunate thing about the Blueair Classic 605 has nothing to do with its performance; it has to do with its price. Yes, this is probably the most powerful commercially available portable air purifier, with advanced HEPASilent and DualProtection filters, and that’s why it costs almost $1,000.

The price alone is what’s holding it from being called the best air purifier for wildfire smoke. By performance, it’s unmatched against the wildfire smoke. And that alone might, for some most affected households, be with the almost $1,000 price tag.

Blueair Classic 605

Pros
  • Most powerful air purifier with 500 CADR rating, perfect for wildfire smoke
  • Has HEPASilent and DualProtection filters to deal with the big capacity and lower noise levels
  • AHAM verified and with Energy Star rating
Cons
  • High price due to incredible performance
  • Not the newest model
  • Effective against wildfire air pollution but that lasts less than 2 months per year

Comparison Of Blue Air Purifiers VS Other Air Purifier Brands

It’s interesting to compare Blueair to other air purifier brands. One reason is that Blueair is a European company (based in Sweden) with its minimalistic design and innovation. Most other companies that make air purifiers are based in the US or Asia.

Here are a few interesting comparisons:

Blueair VS Dyson

Dyson is a fan-producing company first. Blueair, for comparison, is purely an air purifier based company.

Dyson air purifiers offer a lot of special features, like heating, cooling, focused jet tech, and so on. They measure the performance of their air purifiers only with maximal airflow.

If you compare Blueair vs Dyson, you see quite a lot of differences. Blueair, as a true air purifier company, measures the performance of their models in CADR, with the standardized AHAM verification process.

When it comes to which makes better air purifiers – Dyson or Blueair – the answer is two-folded:

  1.  If you look at purely improving indoor air quality, pick Blueair. Pure Blue 211 is the most sensible choice. 
  2. If you’re looking for extra fancy features, including heating and cooling, pick Dyson.
Molekule VS Blueair

The performance of Molekule Air vs Blueair 411+, for example, is difficult to compare. Blueair uses the standardized AHAM verification of CADR rating. Molekule, on the other hand, doesn’t have a standardized methodology to measure the performance.

We can deduce that Blueair has a better filtration system for small particles like pollen, dust, and smoke, given the high CADR ratings. However, on the other hand, Molekule does have a special PECO filter that should, at least in theory, destroy bacteria and viruses.

Here’s the deal:

  • If you need a conventional high-performance air purifier, go with Blueair (high CADR).
  • If you are looking to remove bacteria and certain viruses, go with Molekule (PECO filter).
Winix VS Blueair

You can’t really compare Blueair vs Winix air purifiers. Blueair has high CADR ratings (easily above 300, even above 400), a wide variety of coverage areas (from 161 sq ft to 700+ sq ft), innovative new HEPA and activated carbon filters. 

On the other hand, Winix uses simple HEPA-based filtration, about 250 CADR units, with a very narrow 360 sq ft coverage area.

In short, Blueair air purifiers are better than Winix air purifiers. The difference is huge; as is the price difference. Price-wise, Winix units can cost $500 less than Blueair units. 

Here’s the bottom line:

  • If you’re looking for quality and performance, pick Blueair every time.
  • If you’re looking for a simple and affordable unit, pick Winix.
Blueair VS Coway

Coway vs Blueair is the clash of two air purifier brands that are both synonymous with performance. Well, Coway is known for performance, Blueair is more known for its Scandinavian design, but it has superb CADR ratings. 

The most famous Coway model – the Coway AP-1512HH Mighty – has a 246 CADR rating with 361 sq ft coverage. The Coway Airmega 400 has an even higher 350 CADR rating.

Both of these devices are in the same ballpark as Blueair units. But Blueair can offer still more powerful 400+ CADR rating units for large spaces; Coway cannot.

Bottom line:

  • For standard-sized air purifiers, it’s quite a toss-up; you can go either Blueair or Coway.
  • If you need the highest performing air purifiers with a 400+ CADR rating, go for Blueair.

Blue Air Purifiers FAQ

Are Blue Air Purifiers Good?

Yes, Blue Air purifiers are exceptional. There is no other air purifier company that produces air purifier with such performance. Blue Air purifiers regularly score more than 300 CADR rating on standardized AHAM verification tests.

They also have an appealing Scandinavian design and innovative HEPASilent and DualProtection filtration systems.

The high-performing Blue Air purifiers might be quite expensive. The most popular line is the Pure Blue; 211 and 411 models cost less than $300.

Where Are Blue Air Purifiers Made?

Blue Air purifiers are made in Sweden by a Swedish company Blueair. 

They are made out of galvanized steel, which is more durable than plastics that other low-price brands use.

All engineering and design is also based in Sweden.

Do Blue Air Purifier Emit Ozone?

No. Ozone is only produced in air purifiers with ionizer filters. Blue Air filters do not include air ionization.

Blue Air filtration system is comprised of standard pre-filters, activated carbon filters, and HEPA filters. The innovative advanced filters include HEPASilent filters and DualProtection filters. 

Are Blueair Purifiers HEPA?

They are HEPA purifiers. HEPA filters are the core of every Blurair unit. On top of that, Blueair has developed its own HEPA filters with the HEPASilent technology. These are high capacity filters that use electrostatic as well as mechanical filtration to lower the noise levels of the whole device.


If you have any additional questions, you can pose them in the comments below.

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