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Blueair Classic 605 Air Purifier Review

Updated November, 2022

The Classic 605 air purifier by Blueair is fast, efficient, and virtually silent. It’s designed for large room use and comes with some great bells and whistles that you won’t commonly see on competing models. It’s also an energy efficient model and one that’s quiet-running, so you can use the air purifier around the clock. Blueair offers a different take on air purifier design, offering some innovative features that make this model easier to use and more efficient.

Our Verdict: This model has a lot to offer the consumer who’s looking for an air purifier that can do it all. An air purifier that features settings that make it highly customizable, this efficient machine is designed for the allergy sufferer, multi-pet households, and works to efficiently remove up to 99.97% of air contaminants. We would recommend this model if you’re searching for an air purifier that can treat larger rooms in the home and one that comes loaded with some great extra features that make this model more convenient to use.

Read on to learn more about the Classic 605 and the innovative features it has to offer.

Overview and Features

The Classic 605 air purifier features the patented HEPAsilent filter, which offers top of the line air purification power using a mechanical filtration system combined with an electrostatic charge for a more efficient purification process.

But aside from the air purifier’s top of the line filtration system, it comes with some great extras including Wi-Fi operation, built-in timers, and much more.

Blueair Classic 605 Air Purifier

Product Rating: (4.5/5)

Blueair Classic 605 Air Purifier

  • Wi-fi enabled
  • Nighttime mode
  • LED lights
  • Three fan speeds settings
  • Creates excellent air quality
  • Alexa compatible
  • Designed for larger spaces
  • Longer lasting filter

Filtration System

The HEPAsilent technology is unlike traditional HEPA filtration systems. It features a unique design that promotes peak filtration while resisting clogs. The result is a more efficient and longer lasting filter.

The filter must be replaced every six months, just like a standard HEPA filter, the only difference here involves pet dander, hair, dust, and larger particles. With the average HEPA filter, you would need to change it out more frequently than every six months if you live in a multi-pet home. This is because pet hair is notorious for clogging HEPA filters. But that’s where the HEPAsilent filter shines. Thanks to its innovative design, you’ll get the most out of every filter since the HEPAsilent is essential clog-resistant.

The HEPAsilent filter also removes ozone from the air. This HEPA filter has undergone extensive testing to prove that it can, in fact, remove the ozone concentration from the air. Additionally, this filter is also in compliance with international ozone emission standards.

 Silent Operation

So, how can such a powerful air purifier offer a silent-running operation? This model’s fan features a total of three settings. The first setting is the lowest and is called the whisper-quiet setting. During use, the particles in the air will pass through the first chamber and will become electrically charged. This causes small and large charged particles to become stuck to the fibers in the filter, unable to escape.

CADR Rating

This model features a certified clean air delivery rate of five hundred cubic feet per minute. This means the air purifier can easily purify five hundred cubic feet of space every minute.

Wi-Fi Enabled

Download the Blueair friend app to adjust the air purifier’s settings using your smartphone. The air purifier is also Alexa compatible.


Using the downloaded blueair friend app you can adjust the air purifier’s speed or set the timers. Located on the front of the air purifier you’ll find a bright LED light, which can also be turned up or down based on preference. When the air purifier is set to nighttime mode, the LED light will be switched off and the fan will be set to whisper-quiet mode.


This air purifier can be used in larger spaces up to seven hundred square feet.

Energy Efficient

Not only are the HEPA filters recyclable, but the clean air quality purifier itself is energy star rated.



This model is perfect for larger rooms in the home, however, competing models such as the BreatheSmart by Alen offer a much higher coverage area at eleven hundred square feet, while the 605 can only treat spaces up to seven hundred square feet. However, unlike the Alen air purifier, this model features highly customizable settings and a mobile app that allows you to adjust the fan’s speed, built-in timers, and lights, via your smartphone.

Its powerful HEPA particle filter is also said to trap more contaminants compared to traditional HEPA filters and offers a longer filter lifespan.

To learn more about air purifier technology, click here to read our buyer’s guide.

Related Questions

Can You Adjust the Air Purifier’s Settings When You’re Away from Home?

Yes. Using the Blueair friend app on your smartphone you can change the air purifier’s speed setting, adjust the LED lights, or set a timer.

Is this Air Purifier Covered by a Warranty?

Yes. Blueair currently offers a ten-year warranty for the Classic 605, so you can be confident in this type of major purchase knowing the manufacturer stands behind their products.

Does This Air Purifier Come with a Carbon Filter?

No. However, you can purchase a carbon filter for this model, straight from the manufacturer’s website.

Does this Air Purifier have a UV Light?

No. This model is equipped with an LED light, which allows you to clearly view the settings. To learn more about UV light use on clean air purifiers, click here to read our article on do UV air purifiers works.


  • Wi-fi enabled
  • Nighttime mode
  • LED lights
  • Three fan speeds settings
  • Works great for houses with pet dander, hair, and other pollutants
  • Alexa compatible
  • Designed for larger spaces
  • Longer lasting particle filter


  • Does not come with a carbon particle filter

Conclusion and Rating

Product Rating Updated November, 2022: (4.5/5)

Blueair Classic 605 Air PurifierThe Classic 605 air purifier by Blueair comes loaded with some great extras. Not only does it offer one of the most efficient hepasilent technology filters on the market, but the ability to adjust the air purifier’s settings, via your smartphone, even when you’re away from home, is a huge selling point and a feature that adds a ton of convenience. We gave this model a rating of four and a half stars out of five stars.


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Blueair Classic 605 HEPAsilent Air Purifier
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