BLUEAIR vs Alen: Air Purifiers Compared by Specs
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When comparing a BLUEAIR vs alen air purifier, you are looking at two distinct approaches to clean indoor air. Both units use advanced filtration to capture particles as small as 0.1 microns, ensuring high efficiency for allergens and pollutants. The main difference lies in their design and coverage capabilities. The Blueair model features a compact, Scandinavian-inspired design with smart app control. In contrast, the Alen unit offers a larger footprint with a focus on quiet operation and sleep enhancement.
Key differences
| Aspect | Blueair Signature Small Room Air Purifier | Alen BreatheSmart Large Room Air Purifier |
|---|---|---|
| Filter Type | 7-stage HEPASilent | H13 HEPA |
| Room Coverage | Up to 1,190 sq ft | Up to 1,400 sq ft |
| Noise Level | As low as 19 dB | Not listed |
| Smart Connectivity | Blueair app | Not listed |
| Air Quality Sensor | 5-color air quality indicator | SmartSensor |
Which one should you choose?
Choose Blueair Signature Small Room Air Purifier if
- You prefer a compact unit with a modern, furniture-inspired design that fits easily in smaller spaces.
- You want to control fan speeds and schedules remotely using a dedicated smartphone app.
- You prioritize ultra-quiet operation with a specified noise level as low as 19 dB.
Choose Alen BreatheSmart Large Room Air Purifier if
- You need coverage for larger rooms, with a rating up to 1,400 square feet.
- You are sensitive to noise and value proven sleep enhancement features with pink noise technology.
- You want a unit designed for 24/7 continuous operation with high energy efficiency.
Verdict: Choose the Blueair Signature SP1i if you value smart app integration and a compact design for smaller rooms. Select the Alen BreatheSmart 35i if you need broader coverage for larger spaces and prioritize sleep-friendly noise reduction. Both models effectively capture fine particles, so your choice depends on room size and feature preferences.
Blueair vs Alen Spec Showdown
Filtration Technology
The Blueair Signature SP1i uses a 7-stage HEPASilent filtration system. This design combines mechanical and electrostatic methods to capture 99.97% of particles down to 0.1 microns. It also features OdorFence Technology to break down gases and VOCs. The Alen BreatheSmart 35i relies on an H13 HEPA filter. This medical-grade standard captures 99.9% of allergens, germs, and bacteria at the same 0.1 micron size. While both excel at particle removal, the Blueair includes specific odor control technology that the Alen data does not mention.
Room Coverage
Coverage area is a key factor for placement. The Blueair Signature SP1i is rated for spaces up to 1,190 square feet. It cleans that entire volume every hour. The Alen BreatheSmart 35i covers up to 1,400 square feet. This makes the Alen better suited for larger living rooms or open floor plans. The Blueair is optimized for smaller spaces like dorms or bedrooms, cleaning a 248 square foot room in just 12.5 minutes. If you need maximum square footage, the Alen has the higher rating.
Noise Levels
Quiet operation matters for bedrooms and offices. The Blueair Signature SP1i operates as low as 19 dB. This is extremely quiet and designed not to disrupt sleep or focus. The Alen BreatheSmart 35i is also noted for quiet operation. It emits pink noise, which optimizes lower octave frequencies to enhance sleep. While the Blueair provides a specific decibel rating, the Alen focuses on the acoustic quality of its sound. Both are suitable for nighttime use, but the Blueair offers a precise low-volume specification.
Smart Controls
Control methods differ between the two brands. The Blueair Signature SP1i connects to the Blueair app. This allows you to control fan speed, set schedules, and adjust settings from anywhere. It also features an Auto Mode that adjusts purification based on indoor air conditions. The Alen BreatheSmart 35i includes a SmartSensor that adjusts fan speed based on air quality. It provides color-coded feedback with blue rings for excellent air and purple rings for high particles. Both offer smart automation, but only the Blueair explicitly mentions app-based remote control.
Physical Dimensions
Size and weight affect where you can place the unit. The Blueair Signature SP1i is compact, measuring 9.37 inches wide and 13.8 inches high. It weighs only 5.64 pounds. The Alen BreatheSmart 35i is larger and heavier. It measures 13 inches wide, 20.6 inches high, and 7.6 inches deep. It weighs 10 pounds. The Blueair is easier to move and fits better in tight corners or small dorm rooms. The Alen is a larger tower unit that requires more floor space.
Which Alen or Blueair fits your needs
You want the quietest possible operation
The Blueair Signature SP1i operates as low as 19 dB. This is significantly quieter than the Alen BreatheSmart 35i. If you need silent performance for sleep or focus, this spec matters most. The Blueair unit minimizes noise while maintaining high airflow efficiency. You get clean air without disruptive sound levels during quiet hours.
You need coverage for a large room
The Alen BreatheSmart 35i covers up to 1,400 square feet. This exceeds the Blueair Signature SP1i coverage of 1,190 square feet. If you have a large living room or open office, the Alen unit provides broader air circulation. It is designed to handle larger spaces effectively with its H13 HEPA filtration system.
You want built-in odor and gas removal
The Blueair Signature SP1i includes OdorFence Technology to break down gases and VOCs. The Alen BreatheSmart 35i focuses on particle filtration without specific odor removal features listed. If you need to eliminate cooking smells or chemical vapors, the Blueair 7-stage HEPASilent system offers a more comprehensive approach to air quality.
The products compared
Blueair Signature Small Room Air Purifier
Best for: Small rooms needing quiet, smart purification
- Room Coverage
- Up to 1,190 sq ft
- Filter Type
- HEPASilent
- Noise Level
- 19 dB
- Air Quality Sensor
- Particles & gases sensor
- Operating Modes
- Auto Mode
- Room Type
- Bedroom, Dorm Room
View on Amazon: Blueair Signature Small Room Air Purifier Affiliate link
The BLUEAIR SP1i is a compact air purifier designed for small rooms up to 1,190 square feet. It uses 7-stage HEPASilent filtration to capture 99.97% of particles down to 0.1 microns. The unit operates as quietly as 19 dB and includes a 5-color air quality indicator. You can control it via the Blueair app or Auto Mode. Its small footprint and Scandinavian design fit well in bedrooms or dorms.
Pros
- Covers rooms up to 1,190 sq ft
- 7-stage HEPASilent filtration captures 99.97% of particles
- Operates as low as 19 dB
- Includes 5-color air quality indicator
- Controlled via Blueair app with Auto Mode
Cons
- Smaller room coverage than the Alen 25i
- No remote control listed in specifications
- Requires app for full smart features
Good fit if
- You need quiet operation for sleep
- You want app-based scheduling and control
- You have a room under 1,200 sq ft
Skip if
- You require a remote control
- You need coverage for large open spaces
- You prefer physical button controls only
Verdict: The BLUEAIR SP1i Small Air Purifier offers quiet, app-controlled purification for small rooms. It is a practical option for bedrooms or dorms where low noise and smart features matter.
Alen BreatheSmart Large Room Air Purifier
Best for: Large rooms needing quiet, smart filtration
- Room Coverage
- 1,400 sq ft
- Filter Type
- H13 True HEPA
- Air Quality Sensor
- SmartSensor
- Smart Connectivity
- App
- Target Pollutant
- Pet Dander, Allergies, Dust
- Control Method
- App Control
View on Amazon: Alen BreatheSmart Large Room Air Purifier Affiliate link
The Alen BreatheSmart 35i covers up to 1,400 square feet with an H13 HEPA filter. It captures particles as small as 0.1 micron. The unit includes a SmartSensor that adjusts fan speed based on air quality. It runs quietly with pink noise for sleep. This model is designed for large rooms like bedrooms or offices. It fits well for allergy sufferers seeking clean air.
Pros
- Covers up to 1,400 square feet
- H13 HEPA filter captures 0.1 micron particles
- SmartSensor adjusts fan speed automatically
- Produces pink noise for sleep
Cons
- Smaller coverage than the Blueair Signature model
- Includes only the Essential filter tier
- No mention of smart app control
Good fit if
- You need coverage for large rooms up to 1,400 square feet
- You want automatic fan speed adjustment via SmartSensor
- You prioritize quiet pink noise operation for sleep
Skip if
- You require coverage larger than 1,400 square feet
- You prefer the highest filtration tier with the Ultimate filter
- You need smart app connectivity for remote control
Verdict: Alen BreatheSmart 35i HEPA Air Purifier suits large rooms needing strong filtration and quiet operation. It fits allergy sufferers who value automatic air quality monitoring.
Specifications side by side
| Spec | Blueair Signature Small Room Air Purifier | Alen BreatheSmart Large Room Air Purifier |
|---|---|---|
| Room Coverage | Up to 1,190 sq ft | 1,400 sq ft |
| Filter Type | HEPASilent | H13 True HEPA |
| Noise Level | 19 dB | not stated |
| Air Quality Sensor | Particles & gases sensor | SmartSensor |
| Smart Connectivity | not stated | App |
| Operating Modes | Auto Mode | not stated |
| Room Type | Bedroom, Dorm Room | not stated |
| Target Pollutant | Odor | Pet Dander, Allergies, Dust |
| Control Method | Wi-Fi | App Control |
| Dimensions | 9.37 × 9.37 × 13.8 inches | 7.6 × 13 × 20.6 inches |
| Weight | 5.64 pounds | 10 pounds |
| Size | Small | 35i - 1,400 Sq Ft |
| Color | Grey - SP1i | Essential |
| Model | 4512311000 | BreatheSmart 35i |
Frequently asked questions
Which air purifier is best for small bedrooms?
The Blueair Signature SP1i is the better choice for small rooms like bedrooms or dorms. It is designed specifically for these spaces and operates quietly. Its compact dimensions of 9.37 by 9.37 inches and height of 13.8 inches allow it to fit easily into tight corners without taking up much floor space.
How big is the Alen BreatheSmart 35i?
The Alen BreatheSmart 35i measures 7.6 inches in length, 13 inches in width, and 20.6 inches in height. It weighs 10 pounds. This Essential size unit is built for large rooms. Its taller profile allows it to circulate air effectively across wider areas compared to smaller desktop models.
Is the Blueair SP1i heavy to move?
The Blueair Signature SP1i weighs only 5.64 pounds. This lightweight design makes it easy to carry from room to room. You can move it between your bedroom and office without difficulty. Its small footprint and low weight make it a practical option for renters or those who rearrange furniture often.
What color options are available for these models?
The Blueair Signature SP1i comes in Grey or Dark Grey. The Alen BreatheSmart 35i is available in White. These neutral colors help the units blend into most home decors. You can choose the shade that best matches your existing furniture or wall paint for a cohesive look.
Does the Alen unit use HEPA filtration?
Yes, the Alen BreatheSmart 35i uses HEPA filtration. This filter type is effective at capturing airborne particles. It helps remove allergens and dust from the air in large rooms. If you prioritize strong mechanical filtration for allergy relief, this spec makes the Alen model a reliable choice for your home.
Which model is more suitable for a dorm room?
The Blueair Signature SP1i is ideal for dorm rooms. It is rated for small rooms and dorms specifically. Its quiet operation and smart app control allow you to manage air quality without disturbing roommates. The compact size also fits well in limited dorm spaces where every inch of floor area counts.
What is the model number for the Blueair purifier?
The model number for the Blueair Signature Small Room Air Purifier is 4512311000. You can use this number to find replacement filters or check compatibility with smart home systems. Knowing the exact model ensures you buy the correct accessories and get the most out of the device's features.