Blueair Classic 203

Blueair Classic 203 Review

The last one standing, Blueair Classic 203 is the last of its Classic line that does not comes with Wi-Fi support yet manage to maintain its robust air flow and usability. Made with a long-lasting steel build quality, Blueair Classic 203 is fairly comparable with Blueair 205 in relation to airflow delivery rate, applicable area, noise level and electricity consumption. Other than price factor, what exact advantage would make Blueair Classic 203 remarkable and how dependable is the air purifier? Hit on the link below to check out our up-to-date review.
± 329.99 p
     Annual filter ^    
± 150 - 300 p
Online price*
Latest Amazon price

Blueair 203 Specification

ProductBlueair 203
RSPMRSP/ RSP +- 329.99
17 x 21 x 8 in
(43.2 x 53.3 x 20.3 cm)
Weight24.3 lb (11 kg)
Coverage (up to)237 sq. ft. (22 m2)
Dust free (CADR)155 cfm (263 m3/h)
Pollen free (CADR)155 cfm (263 m3/h)
Smoke free (CADR)155 cfm (263 m3/h)
Airflow speed59 - 150 cfm (100 - 255 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/ Scheduler
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 203 key features

  • 3-stage filtration
  • HEPASilent Technology
  • Electrostatic Particle charging (Ionizer)
  • 200/300 Series Particle Filter
  • 200/300 Series SmokeStop Filter
  • 3 fan speed
  • 5 years warranty

The starters

Blueair 203 dimension
17 x 21 x 8 in
(43.2 x 53.3 x 20.3 cm)
Blueair 203 weight
24.3 lb (11 kg)
Blueair 203 is the last Classic model that still holds the previous Blueair design with grey theme rather than white. Make no mistake the design still looks clean and modern with a fairly small 17 x 21 x 8 in (43.2 x 53.3 x 20.3 cm) dimension. The galvanized steel body is tough, recyclable and does not contribute to chemical off-gassing although weight would have to suffer slightly at 24.3 lb (11 kg). Control wise is as simple as it gets without the Wi-Fi functionality, you have the side dial knob that controls on/ off and 3 airflow speed. Other specification from the air purifier includes a 3-stage filtration, HEPASilent Technology, quick filter replacement with no screws needed, filter replacement indicator, zero ozone emission, CARB certified, ENERGY STAR rated and 5 years warranty.

Airflow, CADR and everything in between

Blueair 203 coverage
Purifying coverage
237 sq. ft. (22 m2)
Blueair 203 airflow speed
Airflow speed
59 - 150 cfm (100 - 255 m3/h)
Blueair 203 fanspeed
For the price you paid, Blueair 203 has a rather below par 3 speed, airflow delivery rate (59 - 150 cfm) that also resulted a moderate 237 sq. ft. purifying coverage at 5 air charges per hour. While it is still ideal for bedroom use, most living hall, kitchen or even meeting room would be beyond the reach of Blueair 203.
Blueair 203 dust CADR
155 cfm (263 m3/h)
Blueair 203 pollen CADR
Pollen CADR
155 cfm (263 m3/h)
Blueair 203 smoke CADR
Smoke CADR
155 cfm (263 m3/h)
With air flowing in from all angles (bottom, back and 2 sides), Blueair 203 has an estimated CADR of 155 cfm for dust, pollen and smoke. Not great but does the job within its purifying range. At this point we would jump ahead and suggest you to take a look at the higher performance Blueair 205 via the comparison link above.

What’s inside count

Blueair 203 HEPA filter
Blueair Classic 200/300 Series Particle Filter
6 - 12 months
Blueair 203 carbon filter
Blueair Classic 200/300 Series SmokeStop Filter
6 - 12 months
Blueair 203 technologies
HEPASilent Technology
^ Blueair 203 filters/ technologies/ lifespan
Sharing the same filtration setup as Blueair 205, Blueair 203 hybrid electrostatic and mechanical filtration has an 99.97% efficiency rate against particles as small as 0.1 micron. All particles that flow inside the air purifier will be electrostatically charge and eventually trap by either the Particle filter or SmokeStop filter. The Particle filter will focus on mold, pollen, bacteria and other micron size allergens while SmokeStop filter will target smoke and odor based pollutants like tobacco smoke, pet odors, cooking fumes or VOCs chemical. Each filters is thermally bonded and design in gradient structure that prevent particles from escaping even under heavy load usage. Additionally the filters uses natural, waterproof anti-bacterial polypropylene fibers that inhibit bacteria and mold from growth. Lastly Blueair 203 would also help reduce surrounding ozone level through its purification.

Blueair 203 is covered against

Blueair 203 VS Dust



Blueair 203 VS Pollen



Blueair 203 VS Hair

Hair/ Pet hair


Blueair 203 VS Dust mite

Dust mites


Blueair 203 VS Mold/ Mildew

Mold/ Mildew


Blueair 203 VS Pet dander

Pet dander


Blueair 203 VS Virus/ Germ

Virus/ Germ


Blueair 203 VS Tobacco smoke

Tobacco smoke


Blueair 203 VS Chemical



Blueair 203 VS VOCs



Blueair 203 VS Smoke/ Gas

Smoke/ Gas


Blueair 203 VS Odor



On the whole Blueair 203 3-stage filtration is truly effective when pit against common and micron size pollutants, allergens, irritants, microorganisms. Powered by powerful 59 - 150 cfm airflow delivery rate and wide 237 sq. ft. purifying coverage, Blueair 203 incorporated Blueair Classic 200/300 Series Particle Filter filtration is in destroying dust, pet dander, dust mites, pollen, mold and mildew.  On coping with odors, smokes and fumes, Blueair 203 Blueair Classic 200/300 Series SmokeStop Filter is also against chemicals, diaper odors, cooking odors, cigarette odors, VOCs, tobacco smokes, radon and ammonia.

Keep it down

Blueair 203 noise level
Noise level
32 - 56 dB
Blueair 203 power consumption
Power consumption
20 - 80 W
Blueair 203 might have the weakest airflow delivery rate in the group, there is no extra advantage over the upper range models as the noise generated is at similar level. In short noise is subtle at low speed and audible but not overly loud at max speed. Power consumption wise is more energy-saving if you can keep the speed to the lowest setting but in real-life test though, its virtually identical to other Blueair Classic air purifier.

At what cost

Blueair 203 MRSP/ RSP
+- 329.99
Blueair 203 annual filter replacement cost
Annual Filter Cost
+- 150 - 300
^ Blueair 203 replacement filters estimated cost
On paper Blueair 203 would lose out to the newer, more powerful, Wi-Fi ready Blueair 205 as the price differences is neglectable. However, if you include the sales price, discount or other online deal, purchasing does makes a whole lot sense. As for annual filter cost, Blueair 203 uses same filters set as 205 so the replacement cost is literally the same therefore it could be very expensive if your surrounding air quality is bad. Unlike other Blueair Classic air purifier that supports Blueair Aware monitor addon, Blueair 203 does not have the luxury to do so as it lacks Wi-Fi features.

The challengers

Blueair Classic 205

Blueair 205

Highly recommended to top up a little bit more for this Wi-Fi ready version with better airflow, purifying coverage and CADR.
Honeywell HPA300

Honeywell HPA300

Cheaper to own and maintain with wider purifying coverage. Lacks equivalent HEPASilent technology AKA Ionizer.

In conclusion......

  • Plenty of promotion/ online deal available online.
  • 3-stage HEPASilent Technology.
  • Effective gradient structured style particle filter and SmokeStop Filter.
  • Uses galvanized steel materials instead of plastic that does not off-gas chemicals.
  • 5 years warranty.
  • Below par CADR and purifying coverage.
  • Potential costly annual filter replacement cost.
  • Lacks remote control/ Wi-Fi support which is available in other Blueair Classic air purifier.
  • No pre-filter to trap and protect other filters from large particles.
Build quality
Airflow delivery
Particle Filtration
Smoke Filtration
Blueair Classic 203

Frequently Asked Questions (FAQ)FAQ

Blueair 203 Troubleshooting

Safety Tips

More on Blueair Classic 203

Blueair Classic 203 is a distinctive air purifier with its remarkable reliability and durability. To start with the air purifier design, the all-round familiar shape is alike most Blueair Classic models while controls are seamlessly attached at side where any sort of adjustment can be done without breaking a sweat. The reinforced steel exterior is meticulously screwed that there are definitely no crooked parts. Superb example of Blueair Classic 203 durability and reliability where owner can continue using the air purifier even after a long time frame.

Airflow performance and purifying coverage

Here is where Blueair Classic 203 different performance aspects come down to. Best for small room size with limited space, the constrained coverage is at an underperforming grade. In most situations, Blueair Classic 203 is the best air purifier for owner that only needs a constricted room such as office desk or bedroom. Continue with the purifying capability, Blueair Classic 203 has heaps of purifying capacity in close proximity. Airborne pollutants such as dust, pollen, mold, mildew, pet dander and fungus would now be entirely absorbed and contained by the air purifier.

Noise level and power consumption

Mainly designed and set up with minimal noise, Blueair Classic 203 noise is well contained that would be perfect for bedroom as it will not get in the way with the owner's sleep. Gentle noise at minimum fan speed while audible noise at max speed. When compare to other Bluair Classic models, Blueair Classic 203 noise level is slightly lower (better). As for power consumption, Blueair Classic 203 is a fine day-to-day air purifier that you will only see the significant difference when the air purifier is constantly running on maximum speed. Power usage is extremely low up to acceptable level at third speed. Again compare with other Blueair Classic models, Blueair Classic 203 electricity consumption is still fairly low.
noise graph

Final thoughts on Blueair Classic 203

Bring to a close, we like Blueair Classic 203 price VS capability against air-borne pollutants and microorganisms. Based on our initial evaluations, we hold no reservation recommending Blueair Classic 203.

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