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

Alen BreatheSmart 45i Wins

Alen Air Purifier BreatheSmart 45i HEPA with Pure Filter for Large Rooms |1900 Sq. Ft.| Perfect for Bedrooms & Home Offices - Captures Dust + Pet Dander & Household Odors - White - High-End Air Purifiers

It offers superior CADR (1216 vs. 0) and covers 1900 sq ft, while Dyson's coverage and CADR are unspecified. Choose Dyson for formaldehyde detection and integrated fan cooling.

$449Buy on Amazon

Bottom Line: Alen BreatheSmart 45i is the better choice. It offers superior CADR (1216 vs.

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 (1216.0 vs 0)
Coverage Sq Ft: 100% higher (1900.0 vs 0)

Who Should Buy Which?

Find the right product for your needs

Buy Alen if...

Alen Air Purifier BreatheSmart

If you need robust and efficient air purification for genuinely large spaces, the Alen BreatheSmart 45i is your ideal choice. This product suits those prioritizing high Clean Air Delivery Rate and extensive coverage, perfect for open-plan living areas or big bedrooms. With a CADR of 1216 for smoke and an hourly coverage of 1900 sq ft, it excels at quickly cleaning the air from dust, dander, and odors. Its quiet pink noise operation also makes it perfect for sleep environments.

Buy Dyson if...

Dyson Purifier Cool Formaldehyde

The Dyson Purifier Cool Formaldehyde TP09 is perfect for tech-savvy individuals living in environments where formaldehyde might be a concern, such as newly renovated homes or spaces with new furniture. If you value a multi-functional device that not only purifies but also provides direct cooling with a fan, this is for you. Its Wi-Fi connectivity and app control for air quality monitoring appeal to those who want smart home integration. While its overall purification coverage isn't specified, its specialized formaldehyde destruction and cooling capabilities offer unique value.

Spec Comparison

5 specs compared

Specification	Alen Air Purifier BreatheSmart	Dyson Purifier Cool Formaldehyde
Price	$449	$500
Rating	4.7(754)	4.2(615)
Cadr Smoke	1216	0
Coverage Sq Ft	1900	0
Filter Type	HEPA H13	HEPA
Smart Sensor	Yes	Yes
WiFi	—	Yes

Swipe horizontally to see all columns

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

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 better for large rooms, capable of covering up to 1900 sq ft hourly. The Dyson Purifier Cool Formaldehyde TP09 does not specify its room coverage area.

What's the main difference in smoke purification?

The Alen BreatheSmart 45i has a high CADR (Clean Air Delivery Rate) of 1216 for smoke particles, indicating strong performance. The Dyson Purifier Cool Formaldehyde TP09 does not state its CADR for smoke.

Is the price difference worth it?

The Dyson is slightly more expensive ($499.89 vs $449). Its added value comes from formaldehyde detection and an integrated fan, rather than superior core purification metrics like CADR or room coverage, which are higher or specified for Alen.

Which has better smart features?

Both have smart sensors. The Dyson adds Wi-Fi connectivity, allowing app control and monitoring of air quality from your phone, offering a more advanced smart home integration than Alen's auto-adjusting fan speed.

Which is better for overall air purification performance?

Alen offers superior overall air purification performance with a specified 1216 CADR for smoke and 1900 sq ft coverage. Dyson's performance metrics for these key indicators are unfortunately not provided.