Name: Alen Air Purifier BreatheSmart 45i HEPA with Pure Filter for Large Rooms up to 1900 Sq. Ft. - Perfect for Bedrooms & Home Offices - Captures Dust -...
Brand: Alen
SKU: B0FPD3RTJQ
Price: 313.06 USD
Availability: InStock
Rating: 4.7 (754 reviews)

Our Verdict

Alen Alen Air Purifier BreatheSmart 45i Wins

Alen Air Purifier BreatheSmart 45i HEPA with Pure Filter for Large Rooms up to 1900 Sq. Ft. - Perfect for Bedrooms & Home Offices - Captures Dust - Graphite - High-End Air Purifiers

It boasts significantly higher CADR_smoke (1216 vs 406.4) and coverage (1900 vs 635 sq ft). Choose BLUEAIR for its ultra-quiet 23 dB minimum operation and specified WiFi connectivity.

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Bottom Line: Alen Alen Air Purifier BreatheSmart 45i is the better choice. It boasts significantly higher CADR_smoke (1216 vs 406.

Key Differences

The most significant spec differences at a glance

1,216

Cadr Smoke

199% more

406.4

1,900

Coverage Sq Ft

199% more

635

Advantages

Where each product wins

Alen

Cadr Smoke: 199% higher (1216.0 vs 406.4)
Coverage Sq Ft: 199% higher (1900.0 vs 635)

Who Should Buy Which?

Find the right product for your needs

Buy Alen if...

Alen Air Purifier BreatheSmart

The ideal buyer for the Alen BreatheSmart 45i is someone with large open-plan living areas, basements, or commercial spaces up to 1900 sq ft, prioritizing rapid and robust air purification. If you need a powerful unit to quickly clear dust, allergens, or smoke from a significant area (CADR_smoke 1216), and value smart automatic fan speed adjustments and sleep-optimized pink noise for bedrooms, this is for you. Budget-conscious buyers will appreciate its performance for a slightly lower price point.

Buy BLUEAIR if...

BLUEAIR Air Purifiers for

The BLUEAIR Blue Pure 211i Max is perfect for environmentally conscious users prioritizing whisper-quiet operation (23 dB min) and energy efficiency (Energy Star Most Efficient 2023). If you need effective air purification for rooms up to 635 sq ft, desiring detailed real-time air quality monitoring (PM1, PM2.5, PM10) with convenient Wi-Fi enabled app control, this is an excellent choice. It's ideal for bedrooms, nurseries, or offices where minimal noise disturbance and smart, eco-friendly operation are paramount.

Spec Comparison

9 specs compared

Specification	Alen Air Purifier BreatheSmart	BLUEAIR Air Purifiers for
Price	$313	$320
Rating	4.7(754)	4.5(12.5k)
Cadr Smoke	1216	406.4
Coverage Sq Ft	1900	635
Noise Level db Min	—	23 dB
Filter Type	HEPA	True HEPA
Smart Sensor	Yes	Yes
Energy Star	—	Yes
WiFi	—	Yes
Filter Life Months	—	6
Noise Level db Max	—	53 dB

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Pros & Cons

Quick overview of strengths and weaknesses

Alen Air Purifier

Pros

Covers up to 1900 sq ft per hour
Filters 99.9% of 0.1 micron particles
SmartSensor adjusts fan speed automatically
Generates pink noise for sleep optimization

Cons

No stated activated carbon for odor removal
Remote app control functionality not specified
Does not specify VOC filtration capability

BLUEAIR Air Purifiers

Pros

Cleans 3048 sq ft in one hour for large spaces.
Removes 99.97% of particles down to 0.1 microns.
Operates quietly, down to 23 dB at lowest setting.
Real-time PM1, PM2.5, PM10 air quality monitoring.

Cons

Filter replacement required every 6-9 months.
Operation limited to North America 110-120V.
Maximum noise output reaches 53 dB.

Frequently Asked Questions

Common questions about this comparison

Which is better for very large rooms?

The Alen BreatheSmart 45i is better for very large rooms, covering up to 1900 sq ft compared to Blueair's 635 sq ft based on specifications. Its CADR_smoke of 1216 also ensures faster and more effective cleaning for extensive areas than Blueair's 406.4 CADR_smoke.

What's the main difference in cleaning performance based on priority specs?

The Alen BreatheSmart 45i offers superior cleaning power with a CADR_smoke of 1216, significantly higher than Blueair's 406.4. This means the Alen purifies smoke and other particles much faster and for larger spaces (1900 sq ft vs 635 sq ft).

Which air purifier operates more quietly?

The BLUEAIR Blue Pure 211i Max is objectively quieter at its lowest setting, operating at just 23 dB. While Alen promises quiet operation and pink noise for sleep, a specific minimum dB level is not provided, making Blueair the clearer choice for absolute lowest noise.

Is the slight price difference between them justified?

The price difference is negligible. Alen offers substantially higher CADR and coverage for slightly less. However, if energy efficiency (Energy Star), confirmed Wi-Fi control, and a guaranteed 23 dB minimum noise level are priorities, Blueair might justify its slightly higher cost.

Which product offers better smart features and air quality monitoring?

Blueair explicitly states 'WiFi enabled' for app control and offers 'Real-time PM1, PM2.5, PM10 air quality monitoring.' While Alen has a SmartSensor, its remote app control functionality and detailed air quality monitoring are not specified, making Blueair potentially more feature-rich.