Blueair 211+ vs. 121: Which One Will Clean Your Air Better?

Blueair, a renowned brand in air purification, offers two noteworthy models: the Blueair 211+ and the Blueair 121.

But how do you decide which of these is right for you?

The Blueair 211+ and the Blueair 121 both have unique advantages and drawbacks, making it essential to consider these differences carefully.

How do these models compare in terms of design, functionality, and performance?

And most importantly, which one will best cater to your air purification requirements?

We’ve done extensive research and analysis to comprehensively compare the Blueair 211+ and the Blueair 121, detailing their features, performance capabilities, and the situations they are best suited for.

So let’s dive into the specifics to help you make an informed decision.

Blueair 211+ vs. 121 Features and Pros & Cons

Blueair Blue Pure 121 Air Purifier

If you’re looking for cleaner air in larger spaces, the Blueair Blue Pure 121 Air Purifier is the ideal choice for effective air filtration.

BlueAir 211+ vs. 121: Blueair Pure 121 Features, Pros and Cons

As someone who recently used the Blueair Blue Pure 121 Air Purifier, I can confidently say that it is a great addition to any room for keeping the air clean and fresh.

The three-stage filtration process effectively captures allergens, odors, smoke, and various airborne contaminants.

In fact, after using it for just a couple of hours, I could already notice a significant difference in the air quality.

Another thing I appreciate about this air purifier is its quiet operation, thanks to its advanced filters.

While the noise level does increase when using the highest setting, it is still relatively quiet compared to other air purifiers I’ve used.

Additionally, the included washable pre-filters are a nice touch, making it easy to maintain and match the décor of any room with the option to change colors.

On the other hand, one downside is the limited fan speed settings, which only include three options.

Depending on your personal preferences and needs, this may be a drawback.

Moreover, if you have a smaller space in mind, keep in mind that this device may be a bit bigger than you’d prefer.


  • Efficient 3-part filtration system captures 99% of airborne pollutants
  • Activated carbon filter removes common odors
  • Comes with two washable pre-filters for capturing large particles


  • May be larger than desired for some spaces
  • Noise level on high setting can be loud
  • Limited fan speed settings

RELATED: Is Blueair Pure 121 Worth the Hype? A No-Nonsense Review

Blueair 211+  vs. 121: Blueair 211+ features, pros and cons

Blueair 211+ Air Purifier

The Blueair 211+ is the perfect air purifier for you, offering a blend of high efficiency and quiet performance in large rooms.

It is a stylish and powerful addition to your home, capable of cleaning large rooms up to 540 sq ft in just 12.5 minutes.

With its sleek Swedish design, it will fit right in with your decor without sacrificing performance.

As you use the air purifier, you’ll appreciate the quiet operation the HEPASilent technology provides.

This ensures that it won’t disturb your peace and quiet while working hard to clean your air.

This air purifier comes with washable pre-filters in different colors, allowing for customization and easy maintenance.

Although this particular unit doesn’t offer automatic settings, it has a simple one-button control that makes it easy to adjust fan speeds as needed.

The 211+ helps reduce allergens, pollutants, and odors with its carbon filter, ensuring a healthier environment for you and your family.

One possible downside to the Blueair 211+ is the need for frequent filter changes, depending on use.

Also, some users may find that it doesn’t completely remove strong odors in large rooms.

Despite these minor drawbacks, the Blueair 211+ Air Purifier remains a reliable and efficient choice for those seeking cleaner air in their homes.


  • Efficient and quick air cleaning
  • HEPASilent technology for quieter operation
  • Customizable and washable pre-filters


  • No automatic settings
  • Might require frequent filter changes
  • Limited in odor removal capabilities

Quick Comparison of Blueair 211+ vs. 121

You might be wondering about the differences between Blueair 211+ and 121 air purifiers.

Well, your search ends here!

Let’s take a quick look at some key features and how they stack up against each other.

FeatureBlueair 211+Blueair 121
Dimension13″D x 13″W x 3.94″H13″D x 13″W x 28.2″H
Weight22.4 lbs18.2 lbs
Coverage Area540 sq.ft.620 sq.ft.
Filtration SystemHEPASilentHEPASilent
CADR Rating (Smoke)350 cfm400 cfm
Noise31-56 dB(A)32-56 dB(A)
Energy Consumption30-61 W35-120 W
Energy-Star Certified?YesYes
Smart Home IntegrationNoNo

Now that you’ve seen the specs, let’s dive a little deeper into some key differences.

Coverage Area

When it comes to coverage area, Blueair 121 is the winner. It can handle larger rooms up to 620 sq.ft., while Blueair 211+ covers only 540 sq.ft.

So, if you have a bigger room, Blueair 121 might be your choice.

CADR Rating (Smoke)

The Clean Air Delivery Rate (CADR) for smoke of Blueair 211+ is lower than Blueair 121.

This means that 121 can clean the smoke particles faster in your room.

Size and Weight

Blueair 211+ is smaller and lighter than Blueair 121.

This may make it easier for you to move it around your home and find the perfect spot.

Energy Consumption

While both models are Energy Star certified, Blueair 211+ consumes less energy compared to 121.

This could be an important factor for you if you are conscious about your energy bills.


Blueair 121 is more expensive than the Blueair 211+.

Depending on your budget, this can be a decisive factor for your choice.

Filtration system

Both models use Blueair’s HEPASilent technology, combining mechanical and electrostatic filtration to capture 99.97% of airborne particles.

This system ensures that you and your family can breathe cleaner air free from allergens, bacteria, and dust particles.


You’ll find that both air purifiers have a sleek and modern look, fitting in seamlessly with your home decor.

Both units also has interchangeable pre-filter, depending on the color that will fit your aesthetics.

Noise level

Both air purifiers operate quietly, ensuring that they won’t disturb you while you’re working or relaxing.

The Blueair 121 has a noise level ranging from 32-56 decibels, whereas the Blueair 211+ produces 31-56 decibels.

This means both models are relatively quiet and won’t interrupt your day-to-day activities.

After getting to know the similarities and differences between Blueair 211+ and 121, you can now choose the air purifier that best fits your needs.

Remember to consider your room size, budget, and other specific requirements before making a decision.

Happy purifying!

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FAQs about Blueair 211+ vs. 121

Which model has better air purification capabilities?

The Blueair 121 has slightly better air purification capabilities due to its larger size and more powerful filters.

However, both the 211+ and 121 deliver excellent air quality to the spaces they’re used in.

How do the room coverage areas compare for the 211+ and 121?

When it comes to room coverage, the Blueair 211+ is designed for small to medium rooms up to 540 square feet, while the 121 is suitable for slightly larger rooms of up to 620 square feet.

So, if you have a larger space, the 121 might be a better option for you.

What are the noise levels of the Blueair 211+ and 121?

Both the Blueair 211+ and 121 have adjustable fan speeds, which means you can control the noise level to fit your preference.

At the lowest fan speed, both models are virtually silent, while at the highest speed, they generate a noticeable, but not unpleasant, humming noise.

Do both models have a similar energy consumption?

Yes, the energy consumption for both the Blueair 211+ and 121 is quite similar.

On average, the 211+ consumes around 30 to 60 watts, while the 121 requires approximately 25 to 65 watts.

So, if you’re concerned about energy costs, you won’t see a significant difference between these two models.

Are there any significant features or accessories exclusive to one of the models?

While both Blueair 211+ and 121 have many similar features, such as multiple fan speeds and HEPASilentâ„¢ technology, the 211+ offers an added bonus: it has a built-in air quality sensor that adjusts the fan speed according to the air quality in your space.

The 121 model does not have this feature. However, both models effectively clean indoor air, making every breath you take healthier and more refreshing.

Blueair 211+ vs. 121: Which Do I Recommend?

When it comes down to Blueair 211+ vs. 121, I recommend the Blueair 121 due to its outstanding overall performance, larger coverage area, and higher CADR.

By opting for this air purifier, you’ll experience greater efficiency in removing indoor air pollutants, ensuring a cleaner and healthier environment for you and your family.

Now, don’t think that the Blueair 211+ is not worth considering!

This air purifier still boasts impressive capabilities, especially when it comes to small to medium-sized rooms.

In comparison to many other air purifier brands, the Blueair 211+ performs admirably.

So, when choosing between the two models, think about the size of the space you need to purify, and keep in mind your specific requirements.

If a larger area is your concern, the Blueair 121 will undoubtedly be your best bet.

However, for smaller rooms and budget considerations, the Blueair 211+ should not be overlooked.

Both air purifiers have their own set of features that cater to different needs, so pick the one that suits you best.

Stay healthy and breathe easy!

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