Name: Alen Air Purifier BreatheSmart 45i HEPA with Pure Filter for Large Rooms |1900 Sq. Ft.| Perfect for Bedrooms & Home Offices - Captures Dust + Pet D...
Brand: Alen
SKU: B0FPD3WFTG
Price: 449 USD
Availability: InStock
Rating: 4.7 (754 reviews)

Our Verdict

BLUEAIR Blue Signature Wins

BLUEAIR Air Purifier for Large Rooms & Home - Odor Eliminating Cleans up to 3385 ft², HEPASilent, Smart WiFi, Auto Mode, Doubles as Table, Removes Dust, Smoke, Pet Hair, AHAM Verified, Blue Signature - High-End Air Purifiers

It offers superior coverage (3385 sq ft vs 1900 sq ft) and CADR for smoke (2163.2 vs 1216). Choose Alen BreatheSmart 45i for quiet operation and pink noise, ideal for bedrooms.

$450Buy on Amazon

Bottom Line: BLUEAIR Blue Signature is the better choice. It offers superior coverage (3385 sq ft vs 1900 sq ft) and CADR for smoke (2163.

Key Differences

The most significant spec differences at a glance

1,216

Cadr Smoke

44% less

2,163.2

1,900

Coverage Sq Ft

44% less

3,385

Advantages

Where each product wins

BLUEAIR

Cadr Smoke: 44% higher (1216.0 vs 2163.2)
Coverage Sq Ft: 44% higher (1900.0 vs 3385.0)

Who Should Buy Which?

Find the right product for your needs

Buy Alen if...

Alen Air Purifier BreatheSmart

If you prioritize a peaceful environment for sleep or focus, the Alen BreatheSmart 45i is ideal. Perfect for bedrooms, nurseries, or home offices, it covers up to 1900 sq ft hourly while operating quietly and emitting soothing pink noise. Its SmartSensor automatically adjusts fan speed, ensuring optimal air quality without disturbance. Buyers seeking effective purification with added sleep benefits will find this product a perfect fit, despite recurring filter costs.

Buy BLUEAIR if...

BLUEAIR Air Purifier for

The BLUEAIR Blue Signature is perfect for those needing top-tier air purification across vast spaces. Covering up to 3385 sq ft with a high smoke CADR of 2163.2, it excels in open-concept homes or areas with significant smoke/odor challenges. Its Smart WiFi and Auto Mode appeal to tech-savvy users, while the unique ability to function as a side table adds practical value. Ideal for buyers prioritizing maximum performance, extensive coverage, and smart home integration.

Spec Comparison

5 specs compared

Specification	Alen Air Purifier BreatheSmart	BLUEAIR Air Purifier for
Price	$449	$450
Rating	4.7(754)	4.6(177)
Cadr Smoke	1216	2163.2
Coverage Sq Ft	1900	3385
Filter Type	HEPA H13	HEPASILENT
Smart Sensor	Yes	Yes
WiFi	—	Yes

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Pros & Cons

Quick overview of strengths and weaknesses

Alen Air Purifier

Pros

Covers up to 1900 sq ft hourly
Removes 99.9% of 0.1 micron particles
SmartSensor auto-adjusts fan speed
Operates quietly, emits pink noise for sleep

Cons

Requires ongoing purchase of replacement filters
Unit requires dedicated space due to large coverage
Operational noise level at max fan speed unknown

BLUEAIR Air Purifier

Pros

Covers large areas up to 3385 sq ft.
Removes 99.97% of particles down to 0.1 microns.
High CADR of 2163.2 for smoke removal.
OdorFence technology removes strong odors.

Cons

Interactive display animations offer no utility.
Requires recurring purchase of replacement filters.
Optimal performance relies on WiFi connectivity.

Frequently Asked Questions

Common questions about this comparison

Which air purifier is better for very large open-concept homes?

The BLUEAIR Blue Signature is superior for very large open spaces, covering up to 3385 sq ft. The Alen BreatheSmart 45i covers a substantial 1900 sq ft, but the Blue Signature offers nearly double the area, making it ideal for expansive layouts.

What's the main difference in smoke removal effectiveness?

The BLUEAIR Blue Signature has a significantly higher CADR for smoke at 2163.2. The Alen BreatheSmart 45i's CADR for smoke is 1216. This means the Blueair is considerably more effective and faster at removing smoke particles from the air.

Is the slight price difference between the two products worth it?

The price difference is negligible ($0.99). Given that the BLUEAIR Blue Signature offers substantially greater coverage (3385 sq ft) and a higher CADR (2163.2), its slight price increase is definitely worthwhile for those needing maximum performance and larger area coverage.

Which product is better suited for a bedroom environment?

The Alen BreatheSmart 45i is better for bedrooms. It operates quietly and uniquely emits pink noise, which is specifically designed to promote better, deeper sleep. The Blueair does not highlight similar sleep-enhancing features.

Does either air purifier offer additional functionality beyond air cleaning?

Yes, the BLUEAIR Blue Signature uniquely functions as a stylish side table, offering a flat top surface for placing items. The Alen BreatheSmart 45i is solely a dedicated air purifier and does not have this dual-purpose design.