Name: Alen Air Purifier BreatheSmart 45i HEPA with Odor Filter for Large Rooms up to 1900 Sq. Ft. - Perfect for Bedrooms & Home Offices - Captures Dust -...
Brand: Alen
SKU: B0FPCVBMLJ
Price: 479 USD
Availability: InStock
Rating: 4.7 (754 reviews)

Our Verdict

Alen BreatheSmart 45i Wins

Alen Air Purifier BreatheSmart 45i HEPA with Odor Filter for Large Rooms up to 1900 Sq. Ft. - Perfect for Bedrooms & Home Offices - Captures Dust - White - High-End Air Purifiers

It offers slightly higher CADR smoke (253.33 vs 248.0) and coverage (395.83 sq ft vs 387.5 sq ft) for a lower price. Choose Coway for its washable pre-filter, reducing long-term filter replacement costs.

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Bottom Line: Alen BreatheSmart 45i is the better choice. It offers slightly higher CADR smoke (253.

Key Differences

The most significant spec differences at a glance

253.33

Cadr Smoke

2% more

248

395.83

Coverage Sq Ft

2% more

387.5

Advantages

Where each product wins

Alen

Cadr Smoke: 2% higher (253.33 vs 248.0)
Coverage Sq Ft: 2% higher (395.83 vs 387.5)

Who Should Buy Which?

Find the right product for your needs

Buy Alen if...

Alen Air Purifier BreatheSmart

If you prioritize an ultra-quiet sleeping environment and superior odor removal, the Alen BreatheSmart 45i is your ideal choice. This air purifier excels in bedrooms and home offices, thanks to its medical-grade HEPA Odor Filter that neutralizes strong smells and captures tiny 0.1 micron particles. Its SmartSensor intelligently adjusts fan speed, ensuring efficient air cleaning with minimal disturbance. Users sensitive to noise or living with pets and cooking odors will find its quiet operation and specialized filtration invaluable.

Buy Coway if...

COWAY Air Purifiers for

The Coway 250 is perfect for those seeking comprehensive air purification for larger living spaces while being mindful of long-term costs. If you need to tackle a broad range of pollutants including pet dander, allergens, and volatile organic compounds (VOCs), this purifier is highly effective, removing 99.999% of 0.01-micron particles and 99% of VOCs. Its washable pre-filter reduces recurring expenses, making it an economical choice for families with allergy sufferers who appreciate smart features like automatic fan speed adjustments to air quality.

Spec Comparison

4 specs compared

Specification	Alen Air Purifier BreatheSmart	Coway Air Purifiers for
Price	$479	$399
Rating	4.7(754)	4.4(7.8k)
Cadr Smoke	253.33	248
Coverage Sq Ft	395.83	387.5
Filter Type	HEPA Odor Filter	True HEPA
Smart Sensor	Yes	Yes

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Pros & Cons

Quick overview of strengths and weaknesses

Alen Air Purifier

Pros

Neutralizes strong household odors
Medical-grade filter captures 0.1 micron particles
SmartSensor auto-adjusts fan speed
High CADR smoke rating (253.33)

Cons

Effective coverage (395 sq ft) less than advertised
Pink noise feature may not be preferred by all users
Requires periodic filter replacement

Coway Air Purifiers

Pros

Covers 387 sq ft for 5 air changes per hour.
Removes 99.999% of 0.01-micron particles.
Reduces 99% of volatile organic compounds.
Automatically adjusts fan speed to air quality.

Cons

Requires periodic replacement of internal filters.
Advertised coverage exceeds typical 5 ACH standard.

Frequently Asked Questions

Common questions about this comparison

Which air purifier is better for eliminating strong odors?

The Alen BreatheSmart 45i is explicitly designed with a HEPA Odor Filter that neutralizes strong household odors. While Coway handles general odors, Alen's specialized filter is typically more effective for persistent smells from pets or cooking.

What is the main difference in air purification performance?

The Alen BreatheSmart 45i has a slightly higher CADR smoke rating of 253.33 and effective coverage of 395.83 sq ft. The Coway 250 offers a CADR smoke of 248.0 and covers 387.5 sq ft, making Alen marginally more powerful overall.

Is the price difference between these two models significant?

Alen is slightly less expensive at $383.2 compared to Coway's $399.0. While the initial difference is small, Coway's washable pre-filter could lead to lower recurring filter replacement costs over time, potentially offsetting its higher upfront price.

Which product offers better particle filtration capabilities?

Both offer excellent particle filtration. Alen captures 0.1 micron particles, while Coway removes 99.999% of 0.01-micron particles, including allergens and dust. Coway also notably reduces 99% of volatile organic compounds (VOCs).