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Air Purifier Comparison – Blueair Blue Pure 121 Air Purifier with activated carbon Filter

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Set Alert for Product: Blue Pure 121 Air Purifier with Particle and Carbon Filter for Allergen and Odor Reduction, Two Washable Pre-Filters, Large Rooms, by Blueair - $355.42
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☑ A 3-stage air purification system
☑ HEPA Silent technology
☑ Naturally antibacterial polypropylene fiber
☑ ACH of 5X
☑ Air purifier with activated carbon filter

Last updated on July 6, 2020 4:04 am
Air Purifier Comparison – Blueair Blue Pure 121 Air Purifier with activated carbon Filter
Air Purifier Comparison – Blueair Blue Pure 121 Air Purifier with activated carbon Filter

$439.99 $355.42

Score & Analysis

Features Score



Price Range : $301 - $400

Group Rank : #2( out of 5 Products )


Average score in the group


Best score in the group



Overall Rank : #17( out of 85 Air purifier )


Average score in Air purifier


Best Score in Air purifier



Features Group This
Best Average Remarks Best Average Remarks
CADR (Clean air delivery rate) 680 253.75 Best
680 184.33 Best
CADR Dust 400 280 Best
400 164.7 Above average
CADR tobocco smoke 400 280 Best
400 163.45 Above average
CADR pollen 400 280 Best
400 176.64 Above average
Air changes per hour 5 5 Best
5 2.8 Best
Energy consumption [Watt] 32 52.25 below average
61 65.6 below average
Room Size 620 402 Best
620 332.98 Above average
Noise level [db]-Air purifier 30 45.75 below average
56 41.09 Above average
Airpurifier weight [lb] 6 12.17 below average
18.2 13.22 Above average
Warranty [Months] 120 57.6 Above average
60 42 Above average


Features of Blueair Blue pure 121 Air Purifier

Are you looking for ways to get rid of airborne pollutants inside your house? There can be no better way than the blueair Blue Pure 121 air purifier. This powerful and efficient air purifier is a great device that gives you clean and pure air.

The Blueair air purifier is one of its kinds of purifying devices that is easy to operate. It comes with a one-touch control button that takes care of the purifier’s operation. You can expect all the airborne particles to be gone, and enjoy a healthy and pure air all day long.

The Blue Pure 121 purifier comes with powerful features and detailed here after:

Room coverage

Providing room coverage of 620 Sq.ft. Blue air Blue pure air purifier is capable of taking care of your house air efficiently.

Further, the Air Changes per Hour (ACH) of this purifier is 5x which means that it can clean the room up to 5 times in an hour. This ensures that pure air circulates at all times inside your house.


Using a combination of mechanical filtration and electrostatic technology, the purifier is a powerful one. With the 3-stage purification process, Blueair air purifier captures 99.97% of the particle pollutants.

Firstly, there is a fabric pre-filter which is located outside the device. Its function is to capture larger air particles. The fabric pre-filter extends the life of the primary filter. The pre-filter fabric is washable, hence long-lasting.

The second is the Particle filter, which is made using the polypropylene fibers. This helps to capture allergens like dust, pet dander, dust mites, pollen, etc. Lastly, the Activated Carbon Filter works to eliminate smoke, odors, gases, and VOCs.

360-degree air intake

A very unique feature of this purifying device is the 360-degree air intake capability. This enables the purifier to draw impure air from all sides of the room.

The air drawn is released back by the output positioned on top of the device. This makes for an effective air circulation.

HEPA Silent Technology

The blueair air purifier with activated carbon filter delivers powerful performance due to the HEPA Silent technology. It combines electrostatic and mechanical filtration technologies to give pure air.

This combination of technologies is what makes the Blue Pure an efficient air purifier with the whisper-silent operation.

Price History

Price history for Blue Pure 121 Air Purifier with Particle and Carbon Filter for Allergen and Odor Reduction, Two Washable Pre-Filters, Large Rooms, by Blueair
Latest updates:
  • $355.42 - April 30, 2020
  • $406.82 - April 25, 2020
  • $411.20 - April 19, 2020
  • $421.37 - April 15, 2020
  • $152.99 - April 13, 2020
  • $423.36 - April 7, 2020
  • $439.99 - February 23, 2020
  • $386.27 - February 21, 2020
Since: January 8, 2020
  • Highest Price: $439.99 - January 8, 2020
  • Lowest Price: $152.99 - April 13, 2020

Additional information

Specification: Air Purifier Comparison – Blueair Blue Pure 121 Air Purifier with activated carbon Filter



Mold spores



Bacteria and viruses

Chemical and gas fumes

Odros and smells

Pet dender

CADR rating

CADR (Clean air delivery rate)




CADR tobocco smoke


CADR pollen


Air changes per hour


Energy consumption [Watt]


Room Size


Noise level [db]-Air purifier


Filters & Sensors
Hepa fliter

True hepa Filter

Air quality sensors

Carbon filter

Filter replacement indicators


Washable pre filter

Other useful
Carrying handle


Digital control

Night light

Programmable timer

Technology-Air purifier
0.3µm particle removal (%)


Antimicrobial treatment

Ozone free

Photocatalytic oxidation

Plasma wave technology

Airpurifier Height [inch]


Airpurifier Length [inch]


Airpurifier weight [lb]


Airpurifier Width [inch]


Warranty [Months]


Wireless controls

Amazon Alexa-Air

Google Assistant-Air

App Control-Air

Remote Control-Air

Voice Control-Air


Does the Blueair air purifier add to noise pollution?

No, this air purifier features HEPA Silent technology which makes it whisper-silent. At the lowest setting, the purifier makes a sound of 31 dB only. Hence, it does not add to noise pollution in any way.

Will the purifier be effective in a house with pets?

Yes. This air purifier will be helpful for houses with pets. It has a 3 stage filtration system which effectively removes pet hair, dander, odors and gives you clean and fresh air to breathe.

How often do the filters need replacement?

The average life of the main filter is around six months. After this period, the main filter will need replacement. The filter change indicator in the device will alert you about the same.

Can the pre-filter be washed and reused?

Yes, the fabric pre-filter of the air purifier can be gently washed in the washing machine. You can reuse it after cleaning. Occasionally, you can also vacuum the fabric pre-filter.

What steps should be followed to maintain the purifier?

Keeping the device clean will ensure that it performs optimally. For the device to function at its maximum capacity, you need to vacuum the pre-filter to remove any dust that is accumulated. The main filter of the device should be changed after every 6 months. And lastly, the external of the device should be wiped with a soft dry cloth.

How long will the pre-filter last?

The device comes with a fabric pre-filter. This is a permanent type of filter. The pre-filter comes in two colors to match the interior easily.

Which place is best suited for maximum performance of the Blue Pure 121 air purifier?

It is important to place the device on a flat surface. Choose a location that allows free flow of air in the room. Also, the purifier should be placed at least 4 inches away from any other object for optimum performance.

What kinds of impurities can the air purifier eliminate/capture?

The purifier consists of a 3-stage purification process which eliminates various airborne particles like dust, bacteria, mold, pollen, viruses, pet dander, smoke, etc. Thus it leaves behind only pure and fresh air inside the house.

How much is the weight of the air purifier? Is it portable?

This purifier weighs only 18lbs and is lightweight. Yes, it is portable. The design is compact and makes it easy to move the device around the house.

What special feature does the air purifier with activated carbon filter consists?

A very special feature of the air purifier is the fabric pre-filter. It captures all the large particles, and thus protects the particle filter. The pre-filter has 2 fabrics in dark blue and grey colors.

Who can use this air purifier?

The air purifier is best suited for anyone who wants to keep the indoor air pollution-free. The purifier captures 99.97% of common airborne pollutants and keeps the air clean. It can also be used by those with pets in the house, as the purifier eliminates pet dander, hair, and odors too.

How much is the power consumption of the device? Does it have a star energy rating?

The Blue Pure air purifier 121 consumes the power of 30-61 watts. Yes, there is a star energy rating for this device. The device is powerful yet energy-efficient.

What is the room size capacity of the air purifier?

The purifier can easily provide coverage to a room of 620 sq.ft. It can easily clean large rooms off all the airborne particles.

Can the purifier be controlled with an app?

No, there is no app for controlling the air purifier.

How much warranty does the purifier come with?

The standard warranty period for this device is 1 year. However, by registering the product within 60 days of purchase you can secure a 2-year warranty.

What type of filter is there in the Blueair air purifier?

There are 3 types of filters in the Blue Pure air purifier; fabric pre-filter, a particle filter, and an activated carbon filter. These filters together capture several pollutants from the air like pollen, dust, bacteria, viruses, and VOCs too.

How many speeds does it have? Are they adjustable?

There are 3 fan speeds in the air purifier. Yes, they are adjustable. The highest speed can be used for maximum cleaning and the lowest one is best suited for absolutely silent operation.

Is it an ozone-free device?

Yes, the purifier is environment-friendly and does not emit any kind of ozone. Thus, you can rest assured that the device is safe as it makes use of filters and no ionization process is involved.

Can the device turn off automatically?

No. The purifier does not have any automatic shut off feature. There is a single control knob, using which you can switch off the purifier.

Is there a service indicator to alert you about filter change? Is there an air quality indicator?

Yes, there is a filter change indicator on the device. The light illuminates to red color to alert you that it is time to change the filter. However, there is no air quality sensor/indicator to let you know about the existing quality of air inside the house.

Can it be controlled with a remote?

No, there is no remote control feature in this device. The device can only be controlled with a single button, placed on the device itself.

What are the CADR values for the air purifier with activated carbon filter?

The CADR values for this purifier are 400 cfm for smoke, dust, and pollen.

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