Name: Alen Air Purifier BreatheSmart 45i HEPA with Fresh Filter + Carbon for Large Rooms |1900 Sq. Ft| Perfect for Bedrooms - Captures Dust + VOCs & Wild...
Brand: Alen
SKU: B0FPD2J63T
Price: 464 USD
Availability: InStock
Rating: 4.4 (60 reviews)

Our Verdict

Alen BreatheSmart 45i Wins

Alen Air Purifier BreatheSmart 45i HEPA with Fresh Filter + Carbon for Large Rooms |1900 Sq. Ft| Perfect for Bedrooms - Captures Dust + VOCs & Wildfire & Cigarette Smoke - High-End Air Purifiers

It offers significantly higher CADR smoke (1216 vs 406.4) and covers larger rooms (1900 sq ft vs 635 sq ft). Choose Blueair for lowest noise (23 dB) and Energy Star efficiency.

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Bottom Line: Alen BreatheSmart 45i is the better choice. It offers 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 vs 406.4)
Coverage Sq Ft: 199% higher (1900 vs 635)

Who Should Buy Which?

Find the right product for your needs

Buy Alen if...

Alen Air Purifier BreatheSmart

If you have a large open-concept living area, a spacious bedroom, or need robust air purification for up to 1900 sq ft, the Alen BreatheSmart 45i is ideal. Prioritizing high smoke CADR (1216), comprehensive filtration against VOCs, dust, and smoke down to 0.1 microns, and quiet operation for undisturbed sleep, this unit justifies its price for those seeking powerful, smart air cleaning in extensive spaces.

Buy BLUEAIR if...

BLUEAIR Air Purifiers for

The Blueair Blue Pure 211i Max is perfect for the value-conscious buyer seeking effective air purification for mid-sized rooms up to 635 sq ft. If you prioritize ultra-quiet operation (down to 23 dB) for a bedroom or nursery, along with energy efficiency (Energy Star Most Efficient 2023), this is an excellent choice. Its real-time air quality monitoring and affordable price ($319.99) make it a smart pick for those who want clean air without a premium investment.

Spec Comparison

10 specs compared

Specification	Alen Air Purifier BreatheSmart	BLUEAIR Air Purifiers for
Price	$464	$320
Rating	4.4(60)	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
Model Number	45i_V2	—
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 hourly
Captures particles down to 0.1 micron
Filters VOCs, odors, chemicals
Quiet operation promotes sleep

Cons

Limited absorption for heavy odors/chemicals
Requires periodic filter replacement

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 air purifier is better for extremely large rooms or heavy smoke?

The Alen BreatheSmart 45i excels for rooms up to 1900 sq ft and heavy smoke due to its high CADR smoke of 1216. The Blueair is rated for 635 sq ft, with a CADR of 406.4, making Alen more powerful for these needs.

What is the key difference in smoke removal efficiency?

The Alen 45i has a significantly higher CADR smoke rating of 1216, making it much more effective at rapidly clearing smoke particles from the air compared to the Blueair 211i Max's CADR smoke of 406.4. Alen is nearly three times more powerful for smoke.

Which air purifier is quieter for sensitive environments like bedrooms?

The Blueair Blue Pure 211i Max is demonstrably quieter, operating down to 23 dB. While Alen promotes quietness for sleep, a specific minimum noise level is not provided, making Blueair a clearer choice for ultra-quiet operation.

Product B mentions cleaning 3048 sq ft. How does this compare to its 635 sq ft specification?

The 635 sq ft is Blueair's recommended room size for optimal purification effectiveness (e.g., 5 air changes per hour). "Cleans 3048 sq ft in one hour" refers to its capacity for a single air change in a larger space, not continuous optimal purification.