Blueair Classic 605 Review In 2023: Are You Impressed?

The top of the line from its Classic series. Blueair 605 is an exceptional air purifier for long-haul purifying. This Sweden brand might be known for its HEPASilent technology, there are still more features that many people are unaware of. With so many competitively priced air purifier out there, should you go for the absolute best? Is this worth the premium price tag and filter maintenance? Explore more about 605 review below.
online price (US)**
±829.99 $$$$$$$/ 7

(annual filter cost ±230-460)

** MRSP (Manufacturer's Suggested Retail Price)/ RSP (Retail selling price) is accurate at the time of posting.
^ Annual filter cost is calculated based on filter price and 12 hours of usage. Pricing could vary depending on air quality, usage frequency, and speed.
` The indicated online price guides as follows: $ = under $50, $$ = $50-100, $$$ = $101-200, $$$$ = 201-300, $$$$$ = $301-400, $$$$$$ = 401-500, $$$$$$$ = over $500.

Blueair 605 Specification

ProductBlueair 605
20 x 26 x 13 in
(50.8 x 66 x 33 cm)
Weight35 lb (15.9 kg)
Coverage (up to)775 sq. ft. (72 m2)
Airflow speed150 - 650 cfm (255 - 1104 m3/h)
Dust free (CADR)500 cfm (849 m3/h)
Pollen free (CADR)640 cfm (1087 m3/h)
Smoke free (CADR)500 cfm (849 m3/h)
Humidifying(H) speed
- Lifespan
- Replacement cost ($)
HEPA filter
- Lifespan
- Replacement cost ($)
Blueair Classic 500/600 Series Particle Filter
6 - 12 months
+- 79.95
Carbon filter
- Lifespan
- Replacement cost ($)
Blueair Classic 500/600 Series SmokeStop Filter
6 - 12 months
+- 149.95
Ionizer/ TechnologiesHEPASilent Technology
UV-light/ PCO
Other filter
All-in-one filter
- Lifespan
- Replacement cost ($)
Optional/ Addon
Noise level32 - 62 dB(A)
Power usage level15 - 100 W
Timer/ SchedulerVia App
Auto mode
Air qualityAQ indicator
Filter change indicator
More color options
Wi-Fi/ BTBluetooth
Remote control
Child lock
Warranty5 years
Email/ Phone support

Key Features

  • 3-stage filtration with HEPASilent Technology
  • Wi-Fi ready (Blue Friend app/ Alexa)
  • Smartphone Control (timer, fanspeed, LED light, night mode, child lock, tracking)
  • Electrostatic Particle-charging
  • 500/600 Series Particle Filter
  • 500/600 Series SmokeStop Filter
  • 3 fan speed
  • Built-in casters
  • [OPTIONAL] Blueair Aware monitor
  • 5 years warranty

Design and Usability

Premium and classic design at its best. Blueair 605 retains its timeless console design from the previous version. At 20 x 26 x 13 in dimension, the air purifier is certainly not compact where you could squeeze it in a tight corner. The 35 lb galvanized steel body feels hefty and premium from the norm. Unlike plastic that will off-gas at some point, the powder-coated exterior ensures no toxin emission. On the sides, there are air inlet and outlet plus bottom casters to ease its mobility. As an added bonus karma point, Blueair 605 is also eco-friendly made with 100% recyclable parts.

Blueair 605 control

Moving on to the controls and usability. There are only 3 big buttons with each having an LED icon to indicate what mode the air purifier is in. Let’s start with the middle air flow control button. The fan speed button will display complete grey if there is no power source (OFF). Outer circle blue with all bars grey when power cable is plugged in. In operation (ON), 1 blue bar = minimum speed, 2 blue bars = medium speed and 3 blue bars = maximum speed. Same goes with the Wi-Fi button where it will be in full grey when there is no Wi-Fi. The button will blink when is ready to connect and blue if is connected. As for the filter button, color will be shown grey + blue when no replacement filter is required. Color change to orange when the filter is in need of replacing. After changing, hold the button for 5 seconds to reset the status.

Available in iOS and Google Play, you could download and use Blueair Friend app via the comfort of your bed. Once you have added 605 into the Blueair Friend app list, you can begin remotely control the air purifier. Basic function includes adjusting the 3 speed, LED display intensity, and timer. Advanced feature includes night mode, child lock, and scheduling (hours and days). You could also access real-time outdoor air quality data and other usage logs. With the add-on purchase Blueair Aware monitor, you could enable Auto mode feature. This lets the machine change speed autonomously to adjust to current room air quality.

Rounding up the Classic air purifier notable features. 3-stage HEPASilent Technology filtration with 3 speed, casters, Smartphone control. Easy one-minute filter replacement with no screws, hooks or tools needed. Finally, zero ozone emission, CARB certified, Energy Star rated and 5 years warranty.

Airflow, Coverage, And CADR

Being a console air purifier, there is multiple air inlet from the sides. Blueair 605 has the best 150 - 650 cfm airflow delivery rate and 775 sq. ft. coverage for its Classic series. Perfect for large room sizes like living hall, dining room, lounge, or kitchen. There is plenty of power to spread out across the 3 fan speed that you will not feel underpowered at all. At 5 air changes an hour, clean air will be swiftly distributed across the room via the air purifier outlet. CADR is equally impressive (above 500 point) and again best in its Classic series. dust CADR stands at 500 cfm, pollen CADR at a crazy 640 cfm and smoke CADR also at 500 cfm. Any figure that passes 300 cfm point is automatically qualified as excellent. Blueair 605 works best against seasonal allergies or hyperallergic/ asthmatic person.

Recommended Read

Filters And Performance

Blueair 605 HEPASilent Technology combines the effort between electrostatic and mechanical filtration. Nearby pollutants will first suck inside the air purifier via the motor fan. The encapsulated particle-charging chamber will straight electrically charge the pollutants. This resulted in the fine airborne pollutants more adhere to the particle filter. As a result, the filter will have an easy task in capturing them at 99.97% efficiency down to 0.1 microns in size. Same goes with the SmokeStop Carbon filter that has a boost efficiency with charged gas based particles. Lastly, all filters are ultrasonically bonded with waterproof, natural antibacterial polypropylene fibers. In other word, antimicrobial protection. This is the opposite of most filters that use chemical-based bacteriostats/ mold inhibitors.

Continue on, all Blueair filter is made with low dense, gradient structure design. This prevents particle of all sizes from re-releasing out even if the filter is under heavy load. Blueair Classic 605 also help reduce its surrounding ozone level. This is because the purified air has less ozone concentration than the level in the air.

Noise And Energy Usage

For the high airflow output, 32 - 62 dB(A) noise level is actually a lot quieter than similar range model. This is because the low density filter allows air to flow at a much lower pressure. That said, you can hardly tell the differences in real life situation. Noise is whisper-quiet at low speed, normal at medium speed and audible moving up the notch. Thanks to the advanced fan setup, 15 - 100 W power consumption is reasonable given the airflow return. Without default auto mode, you have to manually keep the speed at low to help reduce the electricity use.
Noise TypeDecibels
Blueair 60532 - 62 dB(A)
Breathing10 dB
Rustling leaves20 dB
Whispering/ Quiet library30 dB
Light rainfall40-50 dB
Conversation50-60 dB
Vacuum cleaner/ Hair dryer/ Washing machine65-80 dB
City traffic80-90 dB

Pricing And Maintainence Cost

A premium air purifier deserves a premium calling price, although I'm sure not everyone can take it. However, Blueair 605 price tag is not the biggest stumble block. the short filter lifespan and high annual filter replacement cost is. To enjoy Auto mode feature, you will need to buy the Blueair Aware monitor that will push the price up further. So if you can't cough out that much, consider the cheaper alternative below.
Blueair 605 first before purchasing. Understandable so give it a try at retailers like BestBuy, Walmart, or target. Once you see what you like, consider placing the order in Amazon as it offers good deal and 30-days return policy. Blueair official website is also worth a try if the selling price is less than what Amazon puts out. You can also enjoy Blueair Filter Club loyalty program that help reduces the filter cost slightly.

Final Thoughts On Blueair 605

Bring to a conclusion, we are happy with Blueair 605 overall performance bar the price. It seems 83% of the 4-5 stars reviewers agreed with us. Most praises coming from the abundances of airflow that pulls in anything from the path. The outstanding smoke and odor filtration are another regular praises. Lastly, people love how Blueair manage to make a difference against seasonal allergies. As for the bad part, there are around 10% for the unhappy 1-2 stars reviewers. Most have their concern on the noxious chemical smell emitted from the air purifier. Other minor complains include Wi-Fi pairing problem, faulty unit, and filter replacement cost. Compare to the advantages/ disadvantages, there are definitely more things to look forward. We did not encounter any of the above issues in our test unit. If you have a concern with the chemical smells, contact Blueair before purchasing one.


  • Widest purifying coverage in its Classic series.
  • HEPASilent Technology that electrostatically charges particles before passing to filter media.
  • Highly effective gradient structured particle filter and SmokeStop Filter.
  • Impressive dust, pollen, and smoke CADR return.
  • Top-notch build quality with a durable galvanized steel body.
  • Wi-Fi connects quickly and works well with the intuitive Blueair Friend app or Amazon Alexa.
  • Up to 5 years warranty.


  • The most expensive model in Blueair Classic series.
  • Very high annual filter replacement cost.
  • Lacks a stand-alone pre-filter that captures large particles from other filters.
  • Lacks integrated air sensors for air quality monitoring and Auto mode. Requires the addon Blueair Aware monitor purchase.
  • Bulky and heavy (over 35 lb).

Verdicts And Ratings

Build Quality



Particle Filtration

Smoke Filtration


Filter Cost



Blueair Classic 605 Air Purifier Review

Max Fernandez

A loving father and a dedicated reviewer for airfuji.com with more than 1000 air purifiers under his belt. Max Fernandez is also one of the million patients currently suffering from asthma. Feel free to nudge him if you have any questions.

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