Alen Air Purifier vs Honeywell Allergen Plus™: Which Should You Buy in 2026?

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 Alen Air Purifier 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

Superior CADR (1216.0 vs 152.8) and coverage (1900 sq ft vs 398 sq ft). Choose Honeywell for odor/VOC filtration and a lower price of $259.99.

$313Check Price on Amazon

Bottom Line: Alen Alen Air Purifier BreatheSmart 45i is the better choice. Superior CADR (1216.

Key Differences

The most significant spec differences at a glance

1,216

Cadr Smoke

696% more

152.8

1,900

Coverage Sq Ft

377% more

398

Advantages

Where each product wins

Alen

Cadr Smoke: 696% higher (1216.0 vs 152.8)
Coverage Sq Ft: 377% higher (1900.0 vs 398.0)

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 open-concept areas, the Alen BreatheSmart 45i is your ideal choice. This buyer prioritizes exceptional coverage of up to 1900 sq ft and a high CADR of 1216.0 for rapid air cleaning, particularly for dust and allergens. They value the SmartSensor for automatic adjustments and quiet operation for undisturbed sleep, even without specific odor filtration. They are willing to pay $313.06 for superior particle removal over a large area.

Buy Honeywell if...

Honeywell Allergen Plus™ 3-in-1

The Honeywell Allergen Plus HPA6000 is perfect for buyers seeking comprehensive air purification in medium-sized rooms, such as bedrooms or offices. This user prioritizes not just allergen and pet dander reduction, but also explicit odor and VOC filtration capabilities. They appreciate the air quality sensor for automatic adjustments and quiet operation, all within a more budget-friendly price point of $259.99. They are content with its AHAM certified 398 sq ft coverage and value its versatile controls like sleep mode and timer.

Spec Comparison

4 specs compared

Specification	Alen Air Purifier BreatheSmart	Honeywell Allergen Plus™ 3-in-1
Price	$313	$260
Rating	4.7(754)	4.7(56)
Cadr Smoke	1216	152.8
Coverage Sq Ft	1900	398
Filter Type	HEPA	HEPA
Smart Sensor	Yes	Yes

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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

Honeywell Allergen Plus™

Pros

Filters 99.97% allergens, reduces odors and VOCs.
AHAM certified 398 sq ft coverage at 4.8 ACH.
Monitors air quality, auto-adjusts fan speed.
Operates quietly for undisturbed use.

Cons

AHAM coverage is 398 sq ft, not stated 1928 sq ft.
Filter replacement costs are not detailed.
No remote control or smart app functionality.

Frequently Asked Questions

Common questions about this comparison

Which air purifier is better for large rooms?

The Alen BreatheSmart 45i is significantly better for large rooms, covering up to 1900 sq ft with a CADR of 1216.0 for smoke. The Honeywell HPA6000 is AHAM certified for 398 sq ft with a smoke CADR of 152.8.

What's the main difference in their air purification capabilities?

Alen excels in high-volume particle removal over large areas (1900 sq ft, CADR 1216.0). Honeywell (398 sq ft, CADR 152.8) explicitly adds odor and VOC reduction, alongside allergen filtration, which Alen doesn't specify.

Is the price difference worth it?

The $53 price difference is generally worth it if you need vast coverage. The Alen at $313.06 offers 1900 sq ft coverage, far exceeding the Honeywell's 398 sq ft for $259.99. You're paying more for significantly greater capacity.

Which is better for specific air quality concerns like odors or VOCs?

The Honeywell Allergen Plus HPA6000 is explicitly designed to reduce odors and VOCs, making it the better choice for these specific concerns. The Alen BreatheSmart 45i primarily focuses on particle filtration.