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 vastly superior air purification with 1216 CADR for smoke and 1900 sq ft coverage. Choose Dyson HP1 if multi-functional heating/cooling is your primary need over dedicated air quality.

$449Buy on Amazon

Bottom Line: Alen BreatheSmart 45i is the better choice. It offers vastly superior air purification with 1216 CADR for smoke and 1900 sq ft coverage.

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

This air purifier is ideal for individuals or families prioritizing comprehensive air quality in large spaces. If you live in an area prone to smoke, dust, or pet dander, and need robust filtration for up to 1900 sq ft, the Alen BreatheSmart 45i is an excellent choice. Its high CADR of 1216 ensures rapid purification, while its quiet operation, including pink noise for sleep, makes it perfect for bedrooms and home offices. Budget-conscious buyers seeking superior purification performance without multi-functional add-ons will find great value.

Buy Dyson if...

Dyson Purifier Hot+Cool HP1

The Dyson Purifier Hot+Cool HP1 is perfect for those seeking a premium, multi-functional device that combines air purification with climate control. If you need a single appliance to heat your space in winter, cool it in summer, and purify the air year-round, this is for you. Its smart connectivity via app and voice commands appeals to tech-savvy users who appreciate convenience and integration. While its purification metrics aren't as strong as dedicated purifiers, it's ideal for smaller areas where versatility and design are key.

Spec Comparison

6 specs compared

Specification	Alen Air Purifier BreatheSmart	Dyson Purifier Hot+Cool HP1
Price	$449	$499
Rating	4.7(754)	4.4(157)
Cadr Smoke	1216	0
Coverage Sq Ft	1900	0
Filter Type	HEPA H13	HEPA H13
Smart Sensor	Yes	Yes
Model Number	—	HP11
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

Dyson Purifier Hot+Cool

Pros

Captures 99.97% particles >0.3 microns.
Removes gases and 97% of household odors.
Functions as both a heater and a cooler.
Remote control via app or voice commands.

Cons

Lacks a clear CADR rating specification.
Requires periodic filter replacement.
Full functionality depends on app or voice control.

Frequently Asked Questions

Common questions about this comparison

Which is better for air purification in large rooms?

Alen BreatheSmart 45i is significantly better, covering 1900 sq ft with a high CADR of 1216 for smoke. The Dyson Purifier Hot+Cool HP1 does not specify a CADR or coverage, implying it's less effective for dedicated large-room air cleaning.

What's the main difference in filtration capability?

Both use HEPA H13 filters. However, Alen specifies removing 99.9% of 0.1 micron particles and has a CADR of 1216. Dyson captures 99.97% of particles >0.3 microns, but lacks a CADR, making direct comparison for air changes difficult.

Is the price difference worth it?

The Dyson HP1 ($544.99) is more expensive than the Alen 45i ($449.0). The extra cost for Dyson is justified if you need its heating and cooling functions in addition to air purification. For pure purification, Alen offers better value.

Which has better smart features?

Both have smart sensors. Dyson offers Wi-Fi connectivity, app control, and voice commands, providing more advanced smart home integration. Alen's SmartSensor auto-adjusts fan speed for convenience without external app control.