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 boasts a CADR of 1216 for smoke and covers 1900 sq ft, significantly outperforming LG's 99.2 CADR and 155 sq ft. Choose LG for smaller rooms where Wi-Fi connectivity and a compact design are priorities.

$449Buy on Amazon

Bottom Line: Alen BreatheSmart 45i is the better choice. It boasts a CADR of 1216 for smoke and covers 1900 sq ft, significantly outperforming LG's 99.

Key Differences

The most significant spec differences at a glance

1,216

Cadr Smoke

1126% more

99.2

1,900

Coverage Sq Ft

1126% more

155

Advantages

Where each product wins

Alen

Cadr Smoke: 1126% higher (1216.0 vs 99.2)
Coverage Sq Ft: 1126% higher (1900.0 vs 155)

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 with a large home or open-concept living space, needing powerful and rapid air purification. If you're dealing with significant pet dander, dust, or smoke odors across up to 1900 sq ft, and prioritize a high 1216 CADR for smoke, this is your choice. This buyer values peak performance and quiet operation (pink noise for sleep) over compact design or advanced smart home integration beyond automatic adjustments.

Buy LG if...

LG PuriCare AeroTower Air

The LG PuriCare AeroTower suits individuals living in smaller apartments, bedrooms, or home offices, where aesthetic design, compact size, and modern conveniences are key. If you need effective air purification for rooms up to 155 sq ft, appreciate Wi-Fi control, and a PM 1.0 sensor, this is for you. This buyer prioritizes a stylish appliance with smart connectivity for moderate air quality concerns, rather than extreme purification for vast areas.

Spec Comparison

5 specs compared

Specification	Alen Air Purifier BreatheSmart	LG PuriCare AeroTower Air
Price	$449	$450
Rating	4.7(754)	4.2(14)
Cadr Smoke	1216	99.2
Coverage Sq Ft	1900	155
Filter Type	HEPA H13	True 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

LG PuriCare AeroTower

Pros

99.97% particle capture for 0.3μm.
Three-layer filtration system cleans various pollutants.
PM 1.0 sensor monitors microscopic particles.
Cleans 155 sq ft rooms 4.8 times hourly.

Cons

744 sq ft coverage results in very slow air changes.
Requires periodic filter replacement, incurring cost.
Smoke CADR of 99.2 CFM limits rapid purification.

Frequently Asked Questions

Common questions about this comparison

Which air purifier is better for large open-plan living areas?

The Alen BreatheSmart 45i is significantly better for large spaces, covering up to 1900 sq ft. The LG PuriCare AeroTower is designed for smaller rooms, purifying only 155 sq ft efficiently.

What's the key difference in their ability to remove smoke?

The Alen BreatheSmart 45i has a vastly superior Smoke CADR of 1216.0 CFM, making it highly effective for smoke removal. The LG AeroTower has a much lower Smoke CADR of 99.2 CFM.

Given their similar prices, which offers better value?

For superior purification power and coverage, the Alen BreatheSmart 45i offers better value. It handles much larger spaces and more severe pollutants for a comparable price, especially if square footage is a priority.

Which unit offers more advanced smart features?

Both have smart sensors. However, the LG PuriCare AeroTower adds Wi-Fi connectivity for remote control via an app, which the Alen lacks. The LG also has a PM 1.0 sensor.