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 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 superior purification with CADR 1216 and 1900 sq ft coverage, far exceeding Blueair's 537.6 CADR and 840 sq ft. Choose Blueair ComfortPure for its integrated heating and cooling capabilities.

$313Buy on Amazon

Bottom Line: Alen BreatheSmart 45i is the better choice. It boasts superior purification with CADR 1216 and 1900 sq ft coverage, far exceeding Blueair's 537.

Key Differences

The most significant spec differences at a glance

1,216

Cadr Smoke

126% more

537.6

1,900

Coverage Sq Ft

126% more

840

Advantages

Where each product wins

Alen

Cadr Smoke: 126% higher (1216.0 vs 537.6)
Coverage Sq Ft: 126% higher (1900.0 vs 840)

Who Should Buy Which?

Find the right product for your needs

Buy Alen if...

Alen Air Purifier BreatheSmart

If you live in a spacious home or have an open-concept layout and your primary concern is top-tier air purification for large areas, the Alen BreatheSmart 45i is your ideal choice. This buyer prioritizes exceptional air quality, needing to cover up to 1900 sq ft quickly and efficiently with a high CADR of 1216. They appreciate the SmartSensor for automatic adjustments and quiet operation for undisturbed sleep, even utilizing pink noise. This person is willing to invest in a dedicated, powerful air purifier without needing additional climate control functions.

Buy BLUEAIR if...

BLUEAIR ComfortPure Most Powerful

The BLUEAIR ComfortPure is perfect for the individual seeking a versatile, all-season comfort solution for medium-sized rooms up to 840 sqft. This buyer values multi-functionality, desiring both air purification and supplemental heating, along with a cooling fan, all in one device. They will appreciate the convenience of WiFi connectivity, app control, and voice commands for seamless integration into their smart home. Someone looking for a cost-effective, space-saving unit that can adapt to changing seasonal needs, without requiring heavy-duty air conditioning, will find this product ideal.

Spec Comparison

6 specs compared

Specification	Alen Air Purifier BreatheSmart	BLUEAIR ComfortPure Most Powerful
Price	$313	$266
Rating	4.7(754)	4.0(696)
Cadr Smoke	1216	537.6
Coverage Sq Ft	1900	840
Filter Type	HEPA	HEPASilent
Smart Sensor	Yes	—
WiFi	—	Yes
Filter Life Months	—	9

Swipe horizontally to see all columns

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 ComfortPure Most

Pros

Purifies 840 sqft in 60 minutes (CADR 537.6).
Combines air purification, heating, and cooling.
Heats room up to 100 F in 60 seconds with 350 oscillation.
HEPASilent removes 99.97% of 0.1 micron particles.

Cons

Cooling mode relies on fan function, not air conditioning.
Filter requires replacement every 9 months, incurring cost.

Frequently Asked Questions

Common questions about this comparison

Which air purifier is better for very large spaces?

The Alen BreatheSmart 45i is superior for large rooms, covering up to 1900 sq ft. The BLUEAIR ComfortPure covers 840 sq ft, making it more suitable for medium-sized spaces. Alen offers nearly double the coverage.

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

The Alen BreatheSmart 45i has a CADR Smoke of 1216, significantly higher than the BLUEAIR ComfortPure's 537.6. This means Alen can clean the air much faster and more effectively, especially in smoky environments or for severe allergens.

Is the price difference worth it for these products?

The Alen is slightly more expensive but offers superior purification specs. The Blueair is cheaper and adds heating/fan cooling. The value depends on whether pure air capacity or multi-functionality is your priority. Alen excels in pure air delivery.

Does either unit offer comprehensive climate control?

The BLUEAIR ComfortPure offers 3-in-1 functionality with heating and a fan-based cooling mode. While it heats effectively, its cooling is not air conditioning. The Alen Alen BreatheSmart 45i focuses solely on air purification, without climate control features.

Which product offers better smart home integration?

The BLUEAIR ComfortPure has WiFi and multiple controls, including app and voice. The Alen BreatheSmart 45i features a SmartSensor for automatic fan speed adjustment but doesn't specify app or voice control, making Blueair more versatile for smart homes.