Model # 503

Internet #202583071

Blueair HEPASilent Air Purifier


HEPASilent Air Purifier

$65900 /each
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Product Overview

The Blueair 503 is an excellent choice for people living with allergies, asthma, or other respiratory conditions, or for anyone who wants cleaner, more breathable air. Designed for large rooms up 580 sq. ft., the Blueair 503 effectively purifies indoor air. This powerful air purifier offers quiet operation by gently diffusing air through an area six times greater than the average air cleaner, thanks to its SurroundAir system. This provides an exceptional air exchange rate and better indoor air quality. Plus you can easily move the Blueair 503 around your living space thanks to convenient caster wheels. Sleek Swedish styling and HEPASilent filtration technology makes Blueair a very popular choice. Combining ionizer, electrostatic, carbon and HEPA-grade filter technologies without producing any external ozone; the Blueair delivers large amounts of clean air quietly. Blueairs 3-stage filter technology achieves better results with CADR ratings that are among the highest in the industry. Blueair’s SurroundAir system achieves peak performance by drawing in dirty air from the sides and bottom and releasing clean, filtered air from the sides and top. Cleaned air that is free of impurities is recirculated into the room.

  • 580 sq. ft. coverage-For effective purifying of large rooms on 5 air exchanges per hour
  • Removes impurities from the air-Including pollen, dust mites, mold spores and pet dander
  • HEPASilent technology-Traps particles with mechanical and electrostatic filtration, creating an open airflow system that remains quiet while cleaning
  • 3-stage progressive filter-Our unique filter design resists clogging and allows filtration at peak performance with high efficiency and longer lasting airflow
  • CADR Rated - Meets strict efficiency guidelines ensuring a high volume of clean, filtered air is delivered
  • Filter replacement indicator-Alerts you when the filter needs to be replaced every 6 months
  • SurroundAir vent system-Delivers exceptional air exchange up to 500 cu. ft. per minute without drafts
  • Galvanized steel housing-For a strong and durable design
  • Filters slide easily in and out making filter changes a breeze
  • Winner of multiple design awards ensuring the Blueair 203 looks great with your decor

Info & Guides

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Maximum coverage area (sq. ft.)
Product Depth (in.)
Product Height (in.)
Product Width (in.)


Air Purifier Type
Air Treatment Product Type
Air Purifier
Automatic shutoff
CADR (Clean Air Delivery Rate)
Color Family
Control Type
Effectiveness (%)
Filter/bulb monitor
Filtered or Filterless
HEPA Filter
Number of Fan Speeds
4 or More
Number of cleaning stages
Primary Filter Type
HEPA - Type
Product Weight (lb.)
Remote Control
Removes bacteria
Removes dust
Removes mold
Removes odors
Removes particulates
Removes pollen
Removes viruses
UVC lamp
Voltage (volts)
Wall Mountable

Warranty / Certifications

Certifications and Listings
AHAM Certified,CARB Compliant,ETL Listed
Manufacturer Warranty
5 Year Limited

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Customer Questions & Answers

Does this have a power cord or does it have to be hard wired ?

Asked by: Bob
Thank you for your question. The unit does come with a cord and the cord is removable.
Answered by: Blueair Support Team
Date published: 2016-10-14


What is the average life expectancy in hours before replacing the filter.
Asked by: Paul
Paul, we recommend changing the filters every 6 months or 4,380 hours. Please let us know if you have any other questions.
Answered by: Blueair Support Team
Date published: 2016-06-01


You list the voltage but not the wattage, what is the wattage.
Asked by: Paul
Our wattage ranges from 20W-256W depending on the unit and the speed selected. If you have questions about a specific unit, our technical specs on has them listed individually, or you can email and we would be happy to provide wattage for a specific unit. Thank you.
Answered by: Blueair Support Team
Date published: 2016-06-01

Room Coverage...

The details say "580 sq. ft. coverage-For effective purifying of large rooms on 5 air exchanges per hour," but does that mean it will be able to cover a bigger living space over a larger amount of time or is that not recommended? For example, our living space is open, including the foyer, living room, kitchen, and hallway to the bedrooms, which would probably be over 580 sq. ft.
Asked by: jst
Yes, the air purifier is most effective for areas up to 580 sq. ft.
Answered by: CommunityAnswer
Date published: 2016-12-22
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Customer Reviews

HEPASilent Air Purifier is rated 4.8 out of 5 by 58.
Rated 5 out of 5 by from This is my 2nd Blueair, I have asthma and I... This is my 2nd Blueair, I have asthma and I love them both.
Date published: 2017-05-23
Rated 4 out of 5 by from Very stylish I purchased this air filtration unit about a month ago and it has improved our quality of sleep by removing the dust and pollen and dander from the air
Date published: 2017-06-14
Rated 4 out of 5 by from air cleaner Seems to be doing a good job. Will know more later.
Date published: 2016-09-05
Rated 5 out of 5 by from Okay, the cats can stay!! Is my girlfriend a crazy cat lady? Probably not. Borderline cat hoarder? Not quite. Cat lover? Definitely!!! And I am now that I can breathe again!!! Things got pretty ugly when I gave my girlfriend an ultimatum about getting rid of her cats because of my allergies. But after looking at other alternatives including many air purifiers, we settled on a Blueair 500 series. At first I was concerned about the the cost because there were plenty of less expensive brands to chose from but after reading reviews and discovering that even hospitals use Blueair purifiers I went ahead and bought one. Five years later my Blue Air purifier is running like a top, I can still breathe and we have even added a couple more cats.
Date published: 2013-11-26
Rated 5 out of 5 by from Worth every penny!! This BlueAir 503 model improves air flow to the room, cleaning the air, making your home a more comfortable environment. We purchased the larger model for our family room/main level, and when we saw such immediate results, we also purchased the 200 models for two of our children's rooms. It does just as it says it will, cleans the air, helps immensely with allergies, and is literally a breath of fresh air. They are a Godsend, period. Our oldest son who doesn't struggle with allergies has been sneaking the 503 to his bedroom at night. Wish I had one in my bedroom too... It truly does make a noticeable difference in your air quality.
Date published: 2013-07-24
Rated 5 out of 5 by from Basic and quiet I purchased 2 of the 503 units out of fear that such a no-frills basic unit would eventually be discontinued in a world of home products obsessed with bluetooth and WiFi connection. The 503 is basically a box , a speed switch, a fan, and 3 filters. I suspect you're really paying for a well thought-out system of home filtration more than the 503 product itself. The 503 and it's substantial filters are well made and filter change couldn't be simpler. And the 503 is quiet! Even on the highest fan speed, it is more quiet that my older honeywell HEPA units on low! All the Blueair units looked interesting, however functioning quietly is very important and the 500 and 600 series move the most air so they should move more air on the HEPA quiet low fan speed than other Blueair models set to low. Importantly, the Ionic emitters confine the charged (dust) particles completely inside the box between the intake fan and the HEPA filters. This means no charged particles escape, which would cause some of those charged particles of dust (etc) to cling to windows and furniture. With two 503's running, we have stopped our sneezing and coughing, collect far far less dust on furniture and floors, and have noticed even the furnace filter ( I use a 30 day change out) appears almost clean. I have the SmokeStop filters installed in the living room unit and notice how cooking smells disappear quickly after dinner and a neighbor commented how fresh the house smells. We have a dog, and perhaps pet smells existed but we were accustomed to it. The 503 in the loft has only the particle filters. We can now stop calling that area the "dust bin." So, the 500 and 600 units move lots of air quietly and confine the ionizer charged particles to inside the unit. A simple knob with OFF and 4 speed settings is all the control I need. The 503 has no vexing WiFi or Bluetooth issues - really nothing to go wrong and as simple an operation as you can get. A value bargain!
Date published: 2017-02-08
Rated 5 out of 5 by from Worth every penny! Yes, the Blueair 503 is a bit pricey but it performs as promised. After 3 weeks of continuous use the air quality in our home is much improved. Family visiting our home remarked at the difference and said the air has a crisp and clean quality. My daily sneezing fits have lessened considerably and there is less dust accumulation. Highly recommend, especially for allergy sufferers. Will likely purchase the Blueair 203 or 403 for the bedroom and use this 503 unit for the main living area of our home. The blue light emitted from the front panel is too bright for our bedroom so I taped a piece of cardboard over the light and it helps quite a bit. All in all, a great purchase and one we would definitely make again. PROS: quiet on all settings but the highest, works great for heavy dust accumulation, much improved air quality, easy to move from room to room CONS: not a big deal at all but you will have to move the unit from room to room (easy to move but a daily chore nonetheless); blue light is bright for sleeping
Date published: 2015-05-05
Rated 2 out of 5 by from Not satisfied Ive had the 503 for about a year. Im not convince that it works. I returned it and received another however still the same. Only moves the air on high which is loud. Air doesnt seem any fresher. For the price and size of the unit i expected more. Now out of alot money. No good. Do not buy the 503 as you see them all suscounted. You will be disappointed.
Date published: 2017-02-09
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