Blueair Classic 205

Blueair Classic 205 Review

The cheapest Classic air purifier you could get that is Wi-Fi enabled, Blueair Classic 205 might not have the strongest applicable area and airflow delivery, it is still very much a Blueair purifier that does not trim on any features compare with the higher range models. Based on the airflow delivery rate, applicable radius, noise level and electricity usage, does Blueair Classic 205 price VS versatility worth considering over its higher range siblings? Hit on the hyperlink below to explore more on Blueair Classic 205.
± 349.99 p
     Annual filter ^    
± 150 - 300 p
Online price*
Latest Amazon price

Blueair 205 Specification

ProductBlueair 205
RSPMRSP/ RSP +- 349.99
17 x 21 x 8 in
(43.2 x 53.3 x 20.3 cm)
Weight24 lb (10.9 kg)
Coverage (up to)280 sq. ft. (26 m2)
Dust free (CADR)200 cfm (340 m3/h)
Pollen free (CADR)200 cfm (340 m3/h)
Smoke free (CADR)180 cfm (306 m3/h)
Airflow speed75 - 220 cfm (127 - 374 m3/h)
A filterAnnual filter cost ($)+- 150 - 300
- Lifespan
- Replacement cost ($)
HEPA filter
- Lifespan
- Replacement cost ($)
Blueair Classic 200/300 Series Particle Filter
6 - 12 months
+- 49.95
Carbon filter
- Lifespan
- Replacement cost ($)
Blueair Classic 200/300 Series SmokeStop Filter
6 - 12 months
+- 99.95
Ionizer/ TechnologiesHEPASilent Technology
UV-light/ PCO
Other filter
All-in-one filter
- Lifespan
- Replacement cost ($)
Optional/ Addon
Noise level32 - 56 dB
Power consumption20 - 80 W
Timer/ SchedulerVia App
More color options
Auto mode
Air qualityAQ indicator
Filter change indicator
Wi-Fi/ BTBluetooth
Remote control
Child lock
Warranty5 years
Email/ Phone support

Product image

Blueair 205 key features

  • 3-stage filtration with HEPASilent Technology
  • Wi-Fi supported (Blue Friend app/ Alexa)
  • Smartphone remote control (timer, fanspeed, LED light, night mode, child lock, tracking)
  • Electrostatic Particle charging (Ionizer)
  • 200/300 Series Particle Filter
  • 200/300 Series SmokeStop Filter
  • 3 fan speed
  • [OPTIONAL] Blueair Aware monitor
  • 5 years warranty

The starters

Blueair 205 dimension
17 x 21 x 8 in
(43.2 x 53.3 x 20.3 cm)
Blueair 205 weight
24 lb (10.9 kg)

The smallest and lightest Wi-Fi ready air purifier in its Classic stable, Blueair 205 stands at 17 x 21 x 8 in (43.2 x 53.3 x 20.3 cm) size with 24 lb (10.9 kg) in weight. Made from galvanized steel that guarantees no chemicals off gassing unlike most plastic materials, Blueair 205 has one of the best build quality around and is exceedingly durable. Best of all you can fully recycle Blueair 205 when it reaches its lifespan. As for mobility, Blueair 205 is still considerably bulky although it comes with side handles that would work even better if casters is included (optional purchase).

Like all Classic models, Blueair 205 has 2 ways of controlling the air purifier however we will focus on the second method later on. The first and most common way is using the main buttons via its top control panel. You can control the fan speed, connect to your Wi-Fi devices and check filter status. Each buttons comes with live LED display that will show the mode you are currently in. To further elaborate, let’s start with the fan speed button, 1 blue bar will light up if you are in first speed, 2 blue bar for second speed and so on. For the Wi-Fi button, the LED blue light will continue to blink if is ready to connect and stays blue if is connected. Finally for the filter button, LED icon will light up in grey + blue by default and change to orange when replacement filter is needed. To reset the filter button, simply hold the button for around 5 seconds.

Other standard features you would find in Blueair 205 include a 3-stage filtration with HEPASilent Technology, 3 speed, smartphone integration, filter replacement with no screws needed, filter replacement indicator, zero ozone emission, CARB certified, ENERGY STAR rated and 5 years warranty.

Blueair Friend app

As mentioned earlier, Blueair 205 is Wi-Fi ready where you could pair with your smartphone to operate the air purifier remotely. Available in both Android and iOS, first you have to download/ install Blueair Friend app and include Blueair 205 into the app list. Once everything is in order, you could adjust the fan speed, LED brightness intensity, setup timer, enable/ disable child lock, night mode and finally advanced scheduling for speed/ LED based on either hours or days. Other than that, you can keep track outdoor air quality in most major urban areas and few other miscellaneous AQ logs. If you have the optional Blueair Aware monitor, you can also enable Auto mode for autonomous operation and monitor room air quality based on your various indoor activities.

Airflow, CADR and everything in between

Blueair 205 coverage
Purifying coverage
280 sq. ft. (26 m2)
Blueair 205 airflow speed
Airflow speed
75 - 220 cfm (127 - 374 m3/h)
Blueair 205 fanspeed
While both Blueair 405 and 605 has excellent purifying coverage, Blueair 205 on the other hand has a moderate purifying coverage catered for medium size room. At 280 sq. ft. applicable area (5 air charges per hour), Blueair 205 would be best suited for bedroom or any room size that does not exceed the recommended coverage. The 3 speed 75 - 220 cfm airflow delivery is consistent with air coming in from bottom, back and side of the air purifier.
Blueair 205 dust CADR
200 cfm (340 m3/h)
Blueair 205 pollen CADR
Pollen CADR
200 cfm (340 m3/h)
Blueair 205 smoke CADR
Smoke CADR
180 cfm (306 m3/h)
Moving on to Blueair 205 CADR, expect an average of dust clean air delivery rate at 200 cfm, pollen CADR also at 200 cfm and smoke CADR at 180 cfm. Decent return although far from the best which you could compare via the specification table above.

What’s inside count

Blueair 205 HEPA filter
Blueair Classic 200/300 Series Particle Filter
6 - 12 months
Blueair 205 carbon filter
Blueair Classic 200/300 Series SmokeStop Filter
6 - 12 months
Blueair 205 technologies
HEPASilent Technology
^ Blueair 205 filters/ technologies/ lifespan
All Classic air purifier utilize the same HEPASilent technology that promises 99.97% efficiency filtration rate against particles as small as 0.1 micron. No exception with Blueair 205 as it combines electrostatic and mechanical filtration where all incoming particles will be electrostatically charge. With all particles charged, pollutants like pollen, mold dust mites will be more clingy to the filters thus reducing the chances of these particles from getting away. Same theory would applied to the SmokeStop filter where it will focus on chemicals, smoke and odors instead. Additionally, The filters is designed in gradient structure and thermally bonded which further prevent particles from escaping even under heavy load circumstances. Another benefits of Blueair 205 filter is it uses natural anti-bacterial polypropylene fibers which is incidentally waterproof. Bacteria and mold would be inhibit from growth as these microorganism require water to thrive. Finally Blueair 205 would also slightly reduce surrounding ozone level by releasing cleaner and less ozone concentrated air.

Blueair 205 is covered against

Blueair 205 VS Dust



Blueair 205 VS Pollen



Blueair 205 VS Hair

Hair/ Pet hair


Blueair 205 VS Dust mite

Dust mites


Blueair 205 VS Mold/ Mildew

Mold/ Mildew


Blueair 205 VS Pet dander

Pet dander


Blueair 205 VS Virus/ Germ

Virus/ Germ


Blueair 205 VS Tobacco smoke

Tobacco smoke


Blueair 205 VS Chemical



Blueair 205 VS VOCs



Blueair 205 VS Smoke/ Gas

Smoke/ Gas


Blueair 205 VS Odor



Undoubtedly Blueair 205 3-stage filtration is tremendously effective when take on large-scale and small scale particles, irritants, allergens, microorganisms. Contributed by all-powerful 75 - 220 cfm airflow delivery rate and wide 280 sq. ft. purifying coverage, Blueair 205 incorporated Blueair Classic 200/300 Series Particle Filter filtration is brilliant in banishing dust, hair, pet dander, dust mites, pollen, mold and mildew.  On coping with odors, fumes and smokes, Blueair 205 Blueair Classic 200/300 Series SmokeStop Filter is also brilliant against chemicals, diaper odors, cooking odors, cigarette odors, VOCs, tobacco smokes, radon and ammonia.

Keep it down

Blueair 205 noise level
Noise level
32 - 56 dB
Blueair 205 power consumption
Power consumption
20 - 80 W
Despite being the smallest Wi-Fi Classic air purifier, Blueair 205 similar noise level at 32 - 56 dB. At low speed, it's perfectly silent without any fan noise while noise is clearly audible as you move up the level. Same pattern with the power consumption, power used is less than a light bulb at low speed while at around 20 - 80 W if you toggle between the speed during operation.

At what cost

Blueair 205 MRSP/ RSP
+- 349.99
Blueair 205 annual filter replacement cost
Annual Filter Cost
+- 150 - 300
^ Blueair 205 replacement filters estimated cost
Blueair 205 is the cheapest Wi-Fi ready air purifier in its Classic series however, there are many cheaper alternatives with wider purifying coverage that you could also considered. As for Blueair 205 filter replacement cost, both particle filters are considerably expensive but it is still the least expensive in the Classic range whether in 6 months’ time or 1 year. Like most Blueair Classic air purifier, you can purchase a Blueair Aware monitor to check surrounding air quality or enabled Blueair 205 hidden Auto mode feature via Blue Friend app.

The challengers

Blueair 405

A worthy upgrade, top up more to enjoy stronger airflow, CADR and wider purifying coverage for large room size.
Winix HR1000 5-Stage-Wifi-Enabled-Air-Cleaner-0

Winix HR1000

Around the same price but comes with wider purifying coverage, higher CADR and cheaper annual filter replacement cost.

In conclusion......

  • Cheapest Wi-Fi ready Blueair Classic air purifier.
  • Unique HEPASilent Technology setup that electrostatically charge particles at initial stage.
  • Effective gradient structured style particle filter and SmokeStop Filter.
  • Durable galvanized steel body that does not off-gas chemicals.
  • Remote access to the air purifier via Blueair Friend app or link it with Amazon Alexa.
  • 5 years warranty.
  • CADR and purifying coverage is average at best.
  • Potentially high annual filter replacement cost on frequent use.
  • No pre-filter to deal with large particles like dust, hair.
  • Lacks air quality monitoring and Auto mode by default (Requires Blueair Aware monitor purchase).
Build quality
Airflow delivery
Particle Filtration
Smoke Filtration
Blueair Classic 205

Frequently Asked Questions (FAQ)FAQ

Blueair 205 Troubleshooting

Safety Tips

More on Blueair Classic 205

Die-hard Blueair user are happy to know that even the cheaper Blueair Classic 205 is capable to take on this market with its incredibly engineered and assembled body. To start off with the air purifier design, Blueair Classic 205 galvanize steel body is well-shaped, durable with no razor sharp corners. Control panel are wonderfully placed that enables hypersensitive and responsive use without any problem. Body configuration is put together with top-tier fitting that feels tougher compared to other air purifiers. People that use air purifier regularly would have no issue with Blueair Classic 205 in long-haul.

Airflow effectiveness and purifying coverage

Blueair Classic 205 is a cutting-edge air purifier that is best use for medium sized space where the purifying coverage would cover places e.g. bedroom, living room or office. Within its purifying scope, Blueair Classic 205 is capable of wiping out tons of particles, odors and other irritants. Dust, mold and mildew within its purifying area will not stand a chance with the air purifier HEPASilent Technology.

Noise level and power consumption

Blueair Classic 205 well-balanced setup could rapidly purifies its nearby air within a justifiable noise level. Nearly no noise at low fan speed, discreet noise at medium fan speed and as expected sharp noise at high fanspeed. Put next to rather equal category home appliances, the noise level is moderately low.Up next, Blueair Classic 205 power-saving purifying will save you a substantial amount of money on electricity bills in long run. Power consumption is lower especially at higher speed. When compare with common home appliances, Blueair Classic 205 overall power consumption is standard in its class.
noise graph

Final thoughts on Blueair Classic 205

Overall, Blueair Classic 205 is an impressive air purifier with fine airflow delivery rate. Comparing the entire list of strong points/weak points, you should exclude the flaws that do not get in the way of the air purifier practicality.

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