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

With a CADR of 1216 and 1900 sq ft coverage, it's superior for air purification capacity. Choose Dyson for specialized formaldehyde destruction and integrated fan cooling, despite its unspecified CADR or coverage.

$464Buy on Amazon

Bottom Line: Alen BreatheSmart 45i is the better choice. With a CADR of 1216 and 1900 sq ft coverage, it's superior for air purification capacity.

Key Differences

The most significant spec differences at a glance

1,216

Cadr Smoke

100% more

1,900

Coverage Sq Ft

100% more

Advantages

Where each product wins

Alen

Cadr Smoke: 100% higher (1216 vs 0)
Coverage Sq Ft: 100% higher (1900 vs 0)

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 prioritizing robust, high-capacity air purification for extensive living spaces, up to 1900 sq ft. If you need efficient removal of dust, smoke, and general VOCs, and value quiet operation (perfect for bedrooms), this is your choice. This buyer seeks a dedicated purifier with a strong 1216 CADR for smoke, focusing on core air cleaning performance rather than smart home integrations, and is prepared for routine filter replacements.

Buy Dyson if...

Dyson Purifier Cool Formaldehyde

The Dyson Purifier Cool Formaldehyde TP09 is perfect for those highly concerned about specific indoor air pollutants like formaldehyde, desiring its unique destruction capability. If you appreciate multi-functional devices that combine purification with a cooling fan, and value advanced tech features like Wi-Fi connectivity and app control for remote monitoring, this is for you. This buyer is willing to invest in a premium, design-forward product that offers innovative solutions, even if specific CADR or room coverage metrics are not explicitly stated.

Spec Comparison

6 specs compared

Specification	Alen Air Purifier BreatheSmart	Dyson Purifier Cool Formaldehyde
Price	$464	$500
Rating	4.4(60)	4.2(615)
Cadr Smoke	1216	0
Coverage Sq Ft	1900	0
Filter Type	HEPA	HEPA
Model Number	45i_V2	—
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
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

Dyson Purifier Cool

Pros

Detects and destroys formaldehyde.
Captures 99.97% of 0.3 micron particles.
Projects purified air throughout the room.
Fan mode offers direct cooling or purification only.

Cons

No stated Clean Air Delivery Rate.
Room coverage area is not specified.

Frequently Asked Questions

Common questions about this comparison

Which is better for large rooms?

The Alen BreatheSmart 45i is superior for large rooms, covering up to 1900 sq ft hourly. The Dyson TP09 does not specify its room coverage area, making Alen the clear choice for larger spaces needing robust air purification and smoke removal.

What's the main difference in smoke removal (CADR)?

The Alen 45i has a high CADR smoke rating of 1216, indicating strong smoke removal capabilities. The Dyson TP09, however, does not provide a stated CADR, making direct comparison on this priority spec difficult. Alen is specified for superior smoke performance.

Which has better smart features?

Both have smart sensors for auto-adjustment. Dyson TP09 adds Wi-Fi connectivity and app control for monitoring and controlling air quality remotely, a feature Alen 45i does not explicitly list beyond its smart sensor. Dyson offers more integrated smart home features.

Is the Dyson worth it for formaldehyde removal?

If formaldehyde detection and destruction are your primary concerns, the Dyson TP09 is uniquely designed for this. Its specialized sensor and catalytic filter target formaldehyde specifically, a feature not explicitly detailed for the Alen 45i, which filters general VOCs.