Head to head

Alen BreatheSmart 75i Large Room Air Purifier vs Winix 5500-2 Air Purifier

Alen BreatheSmart 75i Large Room Air Purifier leads 4 to 1 on the 5 rankable specs, but Winix 5500-2 Air Purifier costs $590 less.

Catalog as of September 1, 2026

Why, in numbers

CADR: Alen BreatheSmart 75i Large Room Air Purifier lists 350 CFM across Smoke, Dust, Pollen (Alen sheet, 2026-09-02); Winix 5500-2 Air Purifier lists 232 CFM (Smoke), 243 CFM (Dust), 246 CFM (Pollen) (Winix sheet, 2026-09-02).
Coverage area: Alen BreatheSmart 75i Large Room Air Purifier lists 1,400 sq ft (2 air changes/hr) / 700 sq ft (4 air changes/hr) (Alen sheet, 2026-09-02); Winix 5500-2 Air Purifier lists 360 sq ft (5 air changes/hr) / 880 sq ft (2 air changes/hr) (Winix sheet, 2026-09-02).
Room size: Alen BreatheSmart 75i Large Room Air Purifier lists Large master suites, open living rooms, offices (Alen sheet, 2026-09-02); Winix 5500-2 Air Purifier lists Bedrooms, nurseries, home offices up to 360 sq ft (Winix sheet, 2026-09-02).
Filter types: Alen BreatheSmart 75i Large Room Air Purifier lists Medical-grade H13 True HEPA + Antimicrobial layer + Heavy Odor Carbon (Alen sheet, 2026-09-02); Winix 5500-2 Air Purifier lists Fine Mesh Pre-Filter + Washable AOC Carbon + True HEPA (99.97%) (Winix sheet, 2026-09-02).
Filter life: Alen BreatheSmart 75i Large Room Air Purifier lists 12–15 months extra long filter life (Alen sheet, 2026-09-02); Winix 5500-2 Air Purifier lists 12 months (HEPA) / Washable carbon filter (Winix sheet, 2026-09-02).

Manufacturer list price, not a live offer. Confirm current pricing before you buy.

Alen BreatheSmart 75i Large Room Air Purifier

$7494 spec wins

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Winix 5500-2 Air Purifier

$1591 spec win

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Buying for

Every rankable spec counts once. Pick a lens to score only what matters for your air purifier.

Straight answer

Overall: 4 to 1

Buy the Alen BreatheSmart 75i Large Room Air Purifier.

Leads 4 of 5 rankable overall specs; Winix 5500-2 Air Purifier takes 1.
CADR: 350 CFM across Smoke, Dust, Pollen vs 232 CFM
Coverage area: 1,400 sq ft vs 360 sq ft
Winix 5500-2 Air Purifier is $590 cheaper. Pay the difference only if cadr matters to you.

Check first: the Alen BreatheSmart 75i Large Room Air Purifier weighs over 25 lb (11 kg). Tick them under deal-breakers if that rules it out.

4 Alen BreatheSmart 75i Large Room Air Purifier5 rankable of 11 specsWinix 5500-2 Air Purifier 1

Deal-breakers

tick what would make you walk away

No Wi-Fi approw
No schedules or remote control from your phone.
Clear:Alen BreatheSmart 75i Large Room Air Purifier · Alen Air AppTrips:Winix 5500-2 Air Purifier · Auto Mode + Sleep Mode with Smart Light…
Under 1,000 sq ft coveragerow
Undersized for an open-plan living area.
Clear:Alen BreatheSmart 75i Large Room Air Purifier · 1,400 sq ftTrips:Winix 5500-2 Air Purifier · 360 sq ft
Over 25 lb (11 kg)row
Hard to move between rooms.
Trips:Alen BreatheSmart 75i Large Room Air Purifier · 27.0 lbClear:Winix 5500-2 Air Purifier · 14.7 lb

At a glance

The handful of numbers that decide most purchases in this category.

2 of 2 differ

CADR

Alen

350 CFM across Smoke, Dust, Pollen

Winix

232 CFM (Smoke), 243 CFM (Dust), 246 CFM (Pollen)

Coverage area

Alen

1,400 sq ft (2 air changes/hr) / 700 sq ft (4 air changes/hr)

Winix

360 sq ft (5 air changes/hr) / 880 sq ft (2 air changes/hr)

True 3-Year Cost of Ownership (TCO)

Upfront price + 3 years of consumables, fees & essential add-ons

Alen BreatheSmart 75i Large Room Air Purifier

Upfront list price$749

3-Yr B6-Pure heavy HEPA filter (Every 12–15 months (~$99/yr))+$297

3-Year Estimated Total$1,046

Winix 5500-2 Air Purifier

Upfront list price$159

3-Yr Washable AOC + True HEPA (Every 12 months (~$45/yr))+$135

3-Year Estimated Total$294

The 90-Day Owner Regret Check

Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.

Post-Purchase Truths

Alen: What to watch for

Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Activated carbon and HEPA media gradually saturate, needing replacement once or twice yearly depending on air pollution and pet shedding.

Winix: What to watch for

Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Activated carbon and HEPA media gradually saturate, needing replacement once or twice yearly depending on air pollution and pet shedding.

Alen BreatheSmart 75i Large Room Air Purifier$7494 wins

Winix 5500-2 Air Purifier$1591 win

Performance Filters Usability & Smart Design & Ownership

11 of 11 attributes differ. Identical rows are dimmed.

Performance

leads 2-0

Performance specifications. Middle column is Alen BreatheSmart 75i Large Room Air Purifier, right column is Winix 5500-2 Air Purifier.
CADR	350 CFM across Smoke, Dust, Pollen (wins this row: higher)	232 CFM (Smoke), 243 CFM (Dust), 246 CFM (Pollen)
Room size	Large master suites, open living rooms, offices	Bedrooms, nurseries, home offices up to 360 sq ft
Coverage area	1,400 sq ft (2 air changes/hr) / 700 sq ft (4 air changes/hr) (wins this row: higher)	360 sq ft (5 air changes/hr) / 880 sq ft (2 air changes/hr)

Filters

leads 1-0

Filters specifications. Middle column is Alen BreatheSmart 75i Large Room Air Purifier, right column is Winix 5500-2 Air Purifier.
Filter types	Medical-grade H13 True HEPA + Antimicrobial layer + Heavy Odor Carbon	Fine Mesh Pre-Filter + Washable AOC Carbon + True HEPA (99.97%)
Filter life	12–15 months extra long filter life (wins this row: higher)	12 months (HEPA) / Washable carbon filter

Usability & Smart

leads 1-0

Usability & Smart specifications. Middle column is Alen BreatheSmart 75i Large Room Air Purifier, right column is Winix 5500-2 Air Purifier.
Noise levels	25 dB (WhisperMax) – 49 dB (Turbo speed) (wins this row: lower)	27.8 dB (Silent) – 54.8 dB (Turbo)
Energy consumption	45 W (Energy Star certified)	70 W max (Energy Star)
Smart features	Alen Air App (Wi-Fi), auto modes, color ring status	Auto Mode + Sleep Mode with Smart Light Sensor (No Wi-Fi)
Air quality sensors	Laser air quality sensor detecting fine particle levels with 5 color rings	Smart Optical Air Quality Sensor (3-color LED indicator)

Design & Ownership

leads 1-0

Design & Ownership specifications. Middle column is Alen BreatheSmart 75i Large Room Air Purifier, right column is Winix 5500-2 Air Purifier.
Weight	27.0 lb (12.2 kg)	14.7 lb (6.7 kg) (wins this row: lower)
Warranty	Lifetime warranty (with active filter subscription)	2 years

Most rows are from the official spec sheet. Marked rows are other published figures or our summary, not lab tests we ran.

Alen BreatheSmart 75i Large Room Air Purifier source Winix 5500-2 Air Purifier source

Which one should you buy

Pick this one if

Alen BreatheSmart 75i Large Room Air Purifier

Commercial-grade quiet purifier cleaning up to 1,400 sq ft every 30 minutes with a lifetime warranty.

Industry-exclusive transferable Lifetime Warranty
Tuned pink noise frequencies promote deeper sleep on WhisperMax mode
Medical-grade H13 True HEPA filter lasts up to 15 months

What you give up

High initial investment
Tall tower profile

Full Alen BreatheSmart 75i Large Room Air Purifier specs →

Pick this one if

Winix 5500-2 Air Purifier

Budget favorite with PlasmaWave technology, Washable AOC Carbon Filter, and True HEPA filtration.

Washable Advanced Odor Control (AOC) carbon filter with real carbon pellets
PlasmaWave technology breaks down pollutants at molecular level
Unbeatable performance per dollar in medium rooms

What you give up

No mobile app connectivity or smart home controls
Aesthetics and plastic chassis are dated

Full Winix 5500-2 Air Purifier specs →

Best for each use

Bedrooms

Quiet nights: low-speed noise, sleep mode, schedules from your phone

Tied on bedrooms. Winix 5500-2 Air Purifier is cheaper.

The 2 rankable bedrooms specs split 1 to 1.
Saves $590 at list price.

Big rooms & allergies

Open-plan rooms or allergies: CADR, coverage, filter grade

For big rooms & allergies, buy the Alen BreatheSmart 75i Large Room Air Purifier.

Leads 3 of 3 rankable big rooms & allergies specs.
CADR: 350 CFM across Smoke, Dust, Pollen vs 232 CFM
Coverage area: 1,400 sq ft vs 360 sq ft
Winix 5500-2 Air Purifier is $590 cheaper. Pay the difference only if cadr matters to you.

Low running cost

Cheap to own: filter life, power draw, warranty

Too close to call on low running cost from the spec sheets. Only filter life is rankable here.

Energy consumption: 45 W vs 70 W max
Warranty: Lifetime warranty vs 2 years

Every answer above is scored from published figures. A lens uses only the rows that matter for that use, including marked rows that are not on the official sheet. Switch lenses interactively in the panel above.

Done deciding?

Open the full standalone spec sheet for either device.

Alen BreatheSmart 75i Large Room Air Purifier spec sheet Winix 5500-2 Air Purifier spec sheet

Manufacturer pages: Alen BreatheSmart 75i Large Room Air Purifier ↗ · Winix 5500-2 Air Purifier ↗

Common questions

Which is cheaper, the Alen BreatheSmart 75i Large Room Air Purifier or the Winix 5500-2 Air Purifier?

Winix 5500-2 Air Purifier costs $590 less at list price.

What is the biggest catch with the Alen BreatheSmart 75i Large Room Air Purifier or Winix 5500-2 Air Purifier?

Winix 5500-2 Air Purifier has this deal-breaker: no Wi-Fi app. No schedules or remote control from your phone.

Which is better for bedrooms, the Alen BreatheSmart 75i Large Room Air Purifier or the Winix 5500-2 Air Purifier?

Tied on bedrooms. Winix 5500-2 Air Purifier is cheaper. The 2 rankable bedrooms specs split 1 to 1. Saves $590 at list price.

What cannot be compared from spec sheets?

Of the 11 specs tracked here, 6 are descriptive and cannot be ranked on numbers alone. Spec sheets also cannot measure subjective factors like build quality, real-world performance, or comfort.

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