
Blueair 403 Air Purifiers
Our Expert Rating:The Blueair 403 Air Purifier with HEPASilent Filter has been discontinued.
The Blueair 403 air purifier is discontinued. As an alternative we recommend the Blueair Classic 405 Air Purifier. Filters available for purchase below.

Customers Also Bought
For rooms larger than 365 sq. ft. please see the Blueair 503 and the Blueair 600 series.
See the entire family of Blueair air purifiers.
- For high-efficiency particle removal
- Maximum room coverage: 900 sq. ft (2 air changes/hr)
- Recommended room coverage: 365 sq. ft (5 air changes/hr)
- Award winning Swedish design
- HEPASilent™ Filtration technology
- Captures 99.97% of all particles down to 0.1 microns
- Choice of HEPASilent or Odor SmokeStop filters
- Internal ionizer
- Zero ozone emission
- 4 fan speeds
- Near silent operation: 32-52 dB(A)
- Choice of manual (403) or electronic (450E) controls
- Air inflow through one side, outflow through the other side
- Built-in carry handles
- Energy Star qualified
- CARB certified
- Putty color with dark grey grills
- Galvanized steel housing with powder coated finish
- Assembled in the China


The 400 series intake air from one side of the unit, passes it through the filter, and outflows clean air through the other side.
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EXPERT REVIEW PARAMETERS | STAR RATING |
1. Airborne Particulate Filtration | |
2. Gas, Chemical & Odor Filtration | |
3. Room Coverage | |
4. Noise Rating | |
5. Filter Life & Replacement Costs | |
6. Ease of Operation & Filter Replacement | |
7. Quality of Construction: Air-tight design, no off-gassing | |
8. Electronic Filter Life Monitoring | |
9. Manufacturer's Credibility, Warranty & Return Policy | |
10. Quality of Filters | |
11. Value for Price |
The Blueair 400 series will quietly and effectively clean the air in a medium to large size room. They are available with your choice of HEPASilent particle filters or Odor Smokestop filters to reduce chemicals and odor in addition to the particulates. The Digital 450E model features electronic controls including an automatic setting that operates based on the measurement of air quality, plus a filter change indicator, timer option, and remote control.
Pluses:
- Unique filtration combines electrostatic and HEPA-like technology for a performance similar to most residential HEPA filters with the ability to filter particles down to 0.1 micron
- Safe use of electrostatic technology does not produce ozone or off-gas
- Less filter restriction: polypropylene filter media is less dense than HEPA filter material and allows the Blueair to have improved air flow, use less fan power, and reduce noise levels
- Virtually Silent: its high air flow is great for quick cleaning and the lower, almost silent speeds provide the ideal operation level for continuous day or night use when you are in the room
- Blueair's award winning design is not only stylish and offers excellent performance, it also allows for easy filter changes that take less then a minute of your time
- Safe, effective and environmentally-friendly filter media: the 100% recyclable polypropylene filter material is water-repellent and naturally retards mold and mildew growth eliminating the need for chemical-based bacteria or mold inhibitors that are used in many residential glass fiber HEPA filters
- Filter Change Indicator: the 450E has a built-in filter change indicator and the 403 includes a magnetic timer that reminds you to change your filters every 6 months as recommended for optimal performance of your Blueair air purifier
Summary:
The Blueair 400 series are an excellent choice for those looking to clean a room or office up to 900 square feet. We like that one can purchase the Odor Smokestop models for chemicals and odors and choose the 450E electronic models for automatic control and filter life monitoring. We would encourage the purchase of the Odor Smokestop filters for all around filtration to provide the optimum clean indoor environment. The HEPASilent particle filters are good for particle filtration, but do not have any carbon so they will not remove any odors or chemicals from the air. For those who like added conveniences, the 450E Digital models have all the little extras and are easy to operate with a remote control. We would like to see Blueair add a pre-filter to their air purifiers to lengthen the life of the main filter and reduce the frequency of replacements. However, considering they perform very well in all other aspects one can see why most will overlook this fault and are very happy with this air purifier.Blueair 403 Air Purifier with HEPASilent Filter

Blueair 403 Air Purifier with HEPASilent Filter
- Size: 23'H x 20'W x 11'D
- Cleaning range: for rooms up to 365 sq. ft.
- Fan speeds: 4
- Controls: manual knob
- Included Filter: 1 HEPASilent particle filter of polypropylene
- Recommended for: general indoor air pollution control including pollen grains, house dust mites, mold spores, and pet dander
Blueair 450E Digital Air Purifier with HEPASilent Filter
- Size: 23'H x 20'W x 11'D
- Cleaning range: for rooms up to 365 sq. ft.
- Fan speeds: 4
- Auto Mode: electronic gas and particle sensors automatically adjust the operating speed according to the level of airborne particles and gaseous compounds
- Controls: digital display with electronic push buttons controls and remote
- Included Filter: 1 HEPASilent particle filter of polypropylene
- Recommended for: general indoor air pollution control including pollen grains, house dust mites, mold spores, and pet dander
Technical Specifications of Blueair 403 Air Purifier with HEPASilent Filter
Blueair 403 Air Purifier with HEPASilent Filter | Blueair 450E Digital Air Purifier with HEPASilent Filter | |
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Model Number | ||
Model Number | 403 | 450E |
Square Foot Coverage | ||
Square Foot Coverage | 365 sq. ft. (5 air changes per hour) | 365 sq. ft. (5 air changes per hour) |
Power Requirements | ||
Power Requirements | AC 120V, 60 Hz | AC 120V, 60 Hz |
Energy Consumption | ||
Energy Consumption | 35-80 watts | 30-80 watts |
Clean Air Density Rate (CADR) | ||
Clean Air Density Rate (CADR) | Smoke = 240, Dust = 240, Pollen = 240 | Smoke = 240, Dust = 240, Pollen = 240 |
Delivered Air Flow | ||
Delivered Air Flow | 75-280 CFM *GO SmokeStop filters reduce airflow to some extent (5-15%) |
75-280 CFM *GO SmokeStop filters reduce airflow to some extent (5-15%) |
Decibels | ||
Decibels | 32-52 dB(A) | 32-52 dB(A) |
Dimensions | ||
Dimensions | 23'H x 20'W x 11'D | 23'H x 20'W x 11'D |
Weight | ||
Weight | 34 lbs. | 34 lbs. |
Pre-filter | ||
Pre-filter | No | No |
Particle Filter | ||
Particle Filter | HEPASilent filter | HEPASilent filter |
Carbon weight | ||
Carbon weight | 3 lbs. of activated carbon in GO SmokeStop filters | 3 lbs. of activated carbon in GO SmokeStop filters |
Warranty | ||
Warranty | 5 year limited warranty | 5 year limited warranty |